2024 |
Gao F-F, Qin Y, Li Z-G, Li W, Hao J, Li X, et al., 'Unusual Pressure-Induced Self-Trapped Exciton to Free Exciton Transfer in Chiral 2D Lead Bromide Perovskites', ACS NANO, 18 3251-3259 (2024) [C1]
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2022 |
Eckstein JT, Salje EKH, Howard CJ, Carpenter MA, 'Symmetry and strain analysis of combined electronic and structural instabilities in tungsten trioxide, W O 3', Journal of Applied Physics, 131 (2022) [C1]
Lattice parameter data from the literature have been used to provide a complete description of spontaneous strain variations across each of the six known phase transitions of W O ... [more]
Lattice parameter data from the literature have been used to provide a complete description of spontaneous strain variations across each of the six known phase transitions of W O 3 in the temperature interval 5-1273 K. Analysis of strain/order parameter coupling reveals the character of each phase transition, a unified description of strain across the full temperature range, the relationship between strain and electronic effects, and new insights into the strain gradients likely to be present in each of the different domain walls that develop in four different ferroelastic phases. Tetragonal and orthorhombic shear strains have values of 4%-6% and 2%-3%, respectively, and are dominated by coupling with the order parameter for antiferroelectric-type displacements. Conversely, shear strains, e 4, e 5, and e 6, of up to 2% are controlled by octahedral tilting. Changes in electronic structure and properties have been related back to the susceptibility of W 6 + to develop cooperative second-order-Jahn-Teller distortions. Proximity to tilt instabilities along with group-subgroup relationships in the P 4 / n m m parent structure results in two overlapping sequences of structural phase transitions, which differ in the form of their electronic structure. The possibility of a ground state structure in space group P 2 1 / c can be rationalized in terms of the efficiency by which different combinations of shearing and tilting of the W O 6 octahedra can reduce the unit cell volume and would imply that W O 3 has a re-entrant phase transition. Gradients in up to three order parameters coupled with gradients in strain of up to 12% across ferroelastic domain walls indicate that the different ferroelastic phases of W O 3 should have domain walls with varied and potentially exotic electronic properties for device applications such as in nanoelectronics and neuromorphic computing.
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2022 |
Li K, Li ZG, Xu J, Qin Y, Li W, Stroppa A, et al., 'Origin of Ferroelectricity in Two Prototypical Hybrid Organic-Inorganic Perovskites', Journal of the American Chemical Society, 144 816-823 (2022) [C1]
Hybrid organic-inorganic perovskite (HOIP) ferroelectrics are attracting considerable interest because of their high performance, ease of synthesis, and lightweight. However, the ... [more]
Hybrid organic-inorganic perovskite (HOIP) ferroelectrics are attracting considerable interest because of their high performance, ease of synthesis, and lightweight. However, the intrinsic thermodynamic origins of their ferroelectric transitions remain insufficiently understood. Here, we identify the nature of the ferroelectric phase transitions in displacive [(CH3)2NH2][Mn(N3)3] and order-disorder type [(CH3)2NH2][Mn(HCOO)3] via spatially resolved structural analysis and ab initio lattice dynamics calculations. Our results demonstrate that the vibrational entropy change of the extended perovskite lattice drives the ferroelectric transition in the former and also contributes importantly to that of the latter along with the rotational entropy change of the A-site. This finding not only reveals the delicate atomic dynamics in ferroelectric HOIPs but also highlights that both the local and extended fluctuation of the hybrid perovskite lattice can be manipulated for creating ferroelectricity by taking advantages of their abundant atomic, electronic, and phononic degrees of freedom.
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2021 |
Whittle TA, Howard CJ, Schmid S, 'Structures and phase transitions in barium sodium niobate tungsten bronze (BNN)', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 77 981-985 (2021) [C1]
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2020 |
McNulty JA, Gibbs AS, Howard CJ, Lightfoot P, Morrison FD, 'Phase transitions in the hexagonal tungsten bronze RbNbW2O9 (vol 286, 121275, 2020)', JOURNAL OF SOLID STATE CHEMISTRY, 291 (2020)
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2020 |
Carpenter MA, Howard CJ, 'Fundamental aspects of symmetry and order parameter coupling for martensitic transition sequences in Heusler alloys (vol 102, 014105, 2020)', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 76 1143-1144 (2020)
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2020 |
Driver SL, Salje EKH, Howard CJ, Lampronti G, Ding X, Carpenter MA, 'Order-parameter coupling and strain relaxation behavior of Ti50Pd50-xCrx martensites', Physical Review B, 102 (2020) [C1]
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Nova |
2019 |
Haines CRS, Howard CJ, Harrison RJ, Carpenter MA, 'Group-theoretical analysis of structural instability, vacancy ordering and magnetic transitions in the system troilite (FeS)-pyrrhotite (Fe
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Nova |
2019 |
Carpenter MA, Evans D, Schiemer J, Wolf T, Adelmann P, Boehmer A, et al., 'Ferroelasticity, anelasticity and magnetoelastic relaxation in Co-doped iron pnictide: Ba(Fe0.957Co0.043)2As2', Journal of Physics. Condensed Matter, 31 (2019) [C1]
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Nova |
2018 |
Campbell B, Howard CJ, Averett TB, Whittle TA, Schmid S, Machlus S, et al., 'An algebraic approach to cooperative rotations in networks of interconnected rigid units.', Acta crystallographica. Section A, Foundations and advances, A74 408-424 (2018) [C1]
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Nova |
2018 |
Carpenter MA, Howard CJ, 'Fundamental aspects of symmetry and order parameter coupling for martensitic transition sequences in Heusler alloys', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 74 560-573 (2018) [C1]
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Nova |
2018 |
Whittle TA, Schmid S, Howard CJ, 'Octahedral tilting in the tungsten bronzes (vol B71, pg 342, 2015)', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 74 742-744 (2018)
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2018 |
Whittle TA, Brant WR, Withers RL, Liu Y, Howard CJ, Schmid S, 'Novel insight into the structure and properties of lead-free dielectric Sr3TiNb4O15 (vol 6, pg 8890, 2018)', JOURNAL OF MATERIALS CHEMISTRY C, 6 9030-9030 (2018)
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2018 |
Whittle TA, Brant WR, Withers RL, Liu Y, Howard CJ, Schmid S, 'Novel insight into the structure and properties of lead-free dielectric Sr3TiNb4O15', JOURNAL OF MATERIALS CHEMISTRY C, 6 8890-8896 (2018) [C1]
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Nova |
2018 |
Wei W, Li W, Butler KT, Feng G, Howard CJ, Carpenter MA, et al., 'An Unusual Phase Transition Driven by Vibrational Entropy Changes in a Hybrid Organic-Inorganic Perovskite', ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 57 8932-8936 (2018) [C1]
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2016 |
Duyker SG, Hill JA, Howard CJ, Goodwin AL, 'Guest-Activated Forbidden Tilts in a Molecular Perovskite Analogue', JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 138 11121-11123 (2016) [C1]
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Nova |
2015 |
Whittle TA, Schmid S, Howard CJ, 'Octahedral tilting in the tungsten bronzes.', Acta Crystallogr B Struct Sci Cryst Eng Mater, 71 342-348 (2015) [C1]
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Nova |
2015 |
Zhang Z, Li W, Carpenter MA, Howard CJ, Cheetham AK, 'Elastic properties and acoustic dissipation associated with a disorder-order ferroelectric transition in a metal-organic framework', CRYSTENGCOMM, 17 370-374 (2015) [C1]
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2014 |
Li W, Thirumurugan A, Barton PT, Lin Z, Henke S, Yeung HH-M, et al., 'Mechanical Tunability via Hydrogen Bonding in Metal-Organic Frameworks with the Perovskite Architecture', JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 136 7801-7804 (2014) [C1]
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Nova |
2014 |
Mitchell RH, Burns PC, Knight KS, Howard CJ, Chakhmouradian AR, 'Observations on the crystal structures of lueshite', PHYSICS AND CHEMISTRY OF MINERALS, 41 393-401 (2014) [C1]
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Nova |
2014 |
Thomson RI, Chatterji T, Howard CJ, Palstra TTM, Carpenter MA, 'Elastic anomalies associated with structural and magnetic phase transitions in single crystal hexagonal YMnO3', JOURNAL OF PHYSICS-CONDENSED MATTER, 26 (2014) [C1]
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Nova |
2014 |
Driver SL, Herrero-Albillos J, Bonilla CM, Bartolome F, Garcia LM, Howard CJ, Carpenter MA, 'Multiferroic (ferroelastic/ferromagnetic/ferrimagnetic) aspects of phase transitions in RCo2 Laves phases', JOURNAL OF PHYSICS-CONDENSED MATTER, 26 (2014) [C1]
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2013 |
Howard CJ, Campbell BJ, Stokes HT, Carpenter MA, Thomson RI, 'Crystal and magnetic structures of hexagonal YMnO3', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 69 534-540 (2013) [C1]
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Nova |
2013 |
Oravova L, Zhang Z, Church N, Harrison RJ, Howard CJ, Carpenter MA, 'Elastic and anelastic relaxations accompanying magnetic ordering and spin-flop transitions in hematite, Fe2O3', JOURNAL OF PHYSICS-CONDENSED MATTER, 25 (2013) [C1]
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Nova |
2013 |
Oravova L, Zhang Z, Church N, Harrison RJ, Howard CJ, Carpenter MA, 'Elastic and anelastic relaxations accompanying magnetic ordering and spin-flop transitions in hematite, Fe2O3 (vol 25, 116006, 2013)', JOURNAL OF PHYSICS-CONDENSED MATTER, 25 (2013)
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2013 |
Li W, Zhang Z, Bithell EG, Batsanov AS, Barton PT, Saines PJ, et al., 'Ferroelasticity in a metal-organic framework perovskite; towards a new class of multiferroics', ACTA MATERIALIA, 61 4928-4938 (2013) [C1]
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Nova |
2012 |
Howard CJ, Carpenter MA, 'Symmetry analysis of the structural and magnetic phase transitions in 122 iron arsenides', Acta Crystallographica Section B-Structural Science, 68 209-212 (2012) [C1]
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Nova |
2012 |
Carpenter MA, Bryson JFJ, Catalan G, Howard CJ, 'Elastic and anelastic relaxations in the relaxor ferroelectric Pb(Mg1/3Nb2/3)O-3: I. Strain analysis and a static order parameter', Journal of Physics-Condensed Matter, 24 1-10 (2012) [C1]
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Nova |
2012 |
Carpenter MA, Zhang Z, Howard CJ, 'A linear-quadratic order parameter coupling model for magnetoelastic phase transitions in Fe1-xO and MnO', Journal of Physics-Condensed Matter, 24 1-17 (2012) [C1]
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Nova |
2012 |
Tan T-Y, Kennedy BJ, Zhou Q, Ling CD, Miiller W, Howard CJ, et al., 'Impact of Jahn-Teller active Mn3+ on strain effects and phase transitions in Sr0.65Pr0.35MnO3', PHYSICAL REVIEW B, 85 (2012) [C1]
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2012 |
Zhang Z, Kennedy BJ, Howard CJ, Carpenter MA, Miiller W, Knight KS, et al., 'Crystal structures, strain analysis, and physical properties of Sr0.7Ce0.3MnO3', PHYSICAL REVIEW B, 85 (2012) [C1]
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2012 |
Carpenter MA, Salje EKH, Howard CJ, 'Magnetoelastic coupling and multiferroic ferroelastic/magnetic phase transitions in the perovskite KMnF3', Physical Review B, 85 (2012) [C1]
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Nova |
2011 |
Kisi EH, Howard CJ, Zhang JF, 'Verification of the elastic constants for a-AI2O 3 using high-resolution neutron diffraction', Journal of Applied Crystallography, 44 216-218 (2011) [C1]
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Nova |
2011 |
Howard A, Jackson A, Howard C, Spratt P, 'Estimating the Volume of Chronic Pleural Effusions Using Transesophageal Echocardiography', JOURNAL OF CARDIOTHORACIC AND VASCULAR ANESTHESIA, 25 229-232 (2011)
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2011 |
Thomson RI, Wright ESL, Rawson JM, Howard CJ, Carpenter MA, 'Magnetoelastic coupling in the organic radical beta-p-NCC(6)F(4)CNSSN', Physical Review B, 84 104450 (2011) [C1]
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Nova |
2010 |
Thomson RI, Rawson JM, Howard CJ, Turczynski S, Pawlak DA, Lukasiewicz T, Carpenter MA, 'Ferroelastic phase transitions and anelastic dissipation in the LaAlO3 -PrAlO3 solid solution series', Physical Review B - Condensed Matter and Materials Physics, 82 214111 (2010) [C1]
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Nova |
2010 |
Harrison RJ, McEnroe SA, Robinson P, Howard CJ, 'Spin orientation in a natural Ti-bearing hematite: Evidence for an out-of-plane component', American Mineralogist, 95 974-979 (2010) [C1]
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Nova |
2010 |
Carpenter MA, Howard CJ, Andrew MJ, McKnight REA, Liu Y, Withers RL, 'Elastic anomalies due to structural phase transitions in mechanoluminescent SrAl2O4:Eu', JOURNAL OF APPLIED PHYSICS, 107 (2010) [C1]
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2010 |
Howard CJ, Carpenter MA, 'Octahedral tilting in cation-ordered Jahn-Teller distorted perovskites - a group-theoretical analysis', Acta Crystallographica Section B-Structural Science, 66 40-50 (2010) [C1]
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Nova |
2010 |
Carpenter MA, Wiltshire EC, Howard CJ, Thomson RI, Turczynski S, Pawlak DA, Lukasiewicz T, 'Pseudoproper ferroelastic softening behaviour and dynamic microstructure of monoclinic PrAlO3 perovskite', Phase Transitions, 83 703-713 (2010) [C1]
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Nova |
2010 |
Zhang Z, Kennedy BJ, Howard CJ, Jang L-Y, Knight KS, Matsuda M, Miyake M, 'X-ray absorption and neutron diffraction studies of (Sr1-xCex)MnO3: transition from coherent to incoherent static Jahn-Teller distortions', JOURNAL OF PHYSICS-CONDENSED MATTER, 22 (2010) [C1]
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2010 |
Carpenter MA, Howard CJ, McKnight REA, Migliori A, Betts JB, Fanelli VR, 'Elastic and anelastic relaxations associated with the incommensurate structure of Pr0.48Ca0.52MnO3', PHYSICAL REVIEW B, 82 (2010) [C1]
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2010 |
Carpenter MA, McKnight REA, Howard CJ, Knight KS, 'Symmetry and strain analysis of structural phase transitions in Pr0.48Ca0.52MnO3', Physical Review B, 82 094101 (2010) [C1]
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Nova |
2009 |
Carpenter MA, Howard CJ, 'Symmetry rules and strain/order-parameter relationships for coupling between octahedral tilting and cooperative Jahn-Teller transitions in ABX(3) perovskites. II. Application', Acta Crystallographica Section B: Structural Science, 65 147-159 (2009) [C1]
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Nova |
2009 |
Carpenter MA, Howard CJ, 'Symmetry rules and strain/order-parameter relationships for coupling between octahedral tilting and cooperative Jahn-Teller transitions in ABX(3) perovskites. I. Theory', Acta Crystallographica Section B: Structural Science, 65 134-146 (2009) [C1]
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Nova |
2009 |
McKnight REA, Howard CJ, Carpenter MA, 'Elastic anomalies associated with transformation sequences in perovskites: I. Strontium zirconate, SrZrO3', Journal of Physics: Condensed Matter, 21 1-14 (2009) [C1]
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Nova |
2009 |
Zhao J, Ross NL, Angel RJ, Carpenter MA, Howard CJ, Pawlak DA, Lukasiewicz T, 'High-pressure crystallography of rhombohedral PrAlO3 perovskite', Journal of Physics: Condensed Matter, 21 1-9 (2009) [C1]
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Nova |
2009 |
Zhang Z, Howard CJ, Kennedy BJ, Matsuda M, Miyake M, 'Crystal structures and phase transition in (Sr0.8Ce 0.2)(Mn1-yCoy)O3 (y = 0 and 0.2): The influence of Jahn-Teller distortion', Journal of Physics: Condensed Matter, 21 1-12 (2009) [C1]
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Nova |
2009 |
Carpenter MA, McKnight REA, Howard CJ, Zhou Q, Kennedy BJ, Knight KS, 'Characteristic length scale for strain fields around impurity cations in perovskites', PHYSICAL REVIEW B, 80 (2009) [C1]
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2008 |
Howard CJ, Withers RL, Knight KS, Zhang Z, '(Ca0.37Sr0.63)TiO3 perovskite - an example of an unusual class of tilted perovskites', JOURNAL OF PHYSICS-CONDENSED MATTER, 20 (2008) [C1]
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2007 |
Kisi EH, Forrester JS, Howard CJ, Ibberson RM, 'Search for the X-phase in poled PZN-PT using very high-resolution single-crystal neutron diffraction', Journal of Physics - Condensed Matter, 19 1-8 (2007) [C1]
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Nova |
2007 |
Howard CJ, Zhang Z, Carpenter MA, Knight KS, 'Suppression of strain coupling in perovskite La0.6Sr0.1TiO3 by cation disorder', PHYSICAL REVIEW B, 76 (2007)
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2007 |
Zhang Z, Lumpkin GR, Howard CJ, Knight KS, Whittle KR, Osaka K, 'Structures and phase diagram for the system CaTiO3-La2/3TiO3', JOURNAL OF SOLID STATE CHEMISTRY, 180 1083-1092 (2007)
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2007 |
Zhang Z, Howard CJ, Kennedy BJ, Knight KS, Zhou Q, 'Crystal structure of Ln(1/3)NbO(3) (Ln = Nd, Pr) and phase transition in Nd1/3NbO3', JOURNAL OF SOLID STATE CHEMISTRY, 180 1846-1851 (2007)
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2006 |
Zhang ZM, Howard CJ, Knight KS, Lumpkin GR, 'Structures of the cation-deficient perovskite Nd0.7Ti0.9Al0.1O3 from high-resolution neutron powder diffraction in combination with group-theoretical analysis', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 62 60-67 (2006)
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2006 |
Kennedy BJ, Howard CJ, Knight KS, Zhang Z, Zhou Q, 'Structures and phase transitions in the ordered double perovskites (Ba2BiBiO6)-Bi-III-O-V and (Ba2BiSbO6)-Sb-III-O-V', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 62 537-546 (2006)
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2006 |
Carpenter MA, Howard CJ, Knight KS, Zhang Z, 'Structural relationships and a phase diagram for (Ca, Sr) TiO3 perovskites', JOURNAL OF PHYSICS-CONDENSED MATTER, 18 10725-10749 (2006)
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2006 |
Forrester JS, Kisi EH, Knight KS, Howard CJ, 'Rhombohedral to cubic phase transition in the relaxor ferroelectric PZN', Journal of Physics - Condensed Matter, 18 L233-L240 (2006) [C1]
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2005 |
Howard CJ, Barnes PW, Kennedy BJ, Woodward PM, 'Structures of the ordered double perovskites Sr2YTaO6 and Sr2YNbO6', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 61 258-262 (2005)
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2005 |
Zhou QD, Kennedy BJ, Howard CJ, Elcombe MM, Studer AJ, 'Structural phase transitions in A(2-x)Sr(x)NiWO(6) (A = Ca or Ba, 0 <= x <= 2) double perovskites', CHEMISTRY OF MATERIALS, 17 5357-5365 (2005)
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2005 |
Howard CJ, Withers RL, Zhang Z, Osaka K, Kato K, Takata M, 'Space-group symmetry for the perovskite Ca0.3Sr0.7TiO3', JOURNAL OF PHYSICS-CONDENSED MATTER, 17 L459-L465 (2005)
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2005 |
Kennedy BJ, Howard CJ, 'Synchrotron x-ray powder diffraction study of the structural phase transition in CaBr2 (vol 70, art no 144102, 2005)', PHYSICAL REVIEW B, 71 (2005)
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2005 |
Carpenter MA, Howard CJ, Kennedy BJ, Knight KS, 'Strain mechanism for order-parameter coupling through successive phase transitions in PrAlO3', PHYSICAL REVIEW B, 72 (2005)
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2005 |
Howard CJ, Kennedy BJ, Curfs-De Felix CC, 'Temperature-induced structural changes in CaCl2, CaBr2, and CrCl2: A synchrotron x-ray powder diffraction study', Physical Review B - Condensed Matter and Materials Physics, 72 1-6 (2005) [C1]
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2004 |
Howard CJ, Lumpkin GR, Smith RI, Zhang ZM, 'Crystal structures and phase transition in the system SrTiO3-La2/3TiO3', JOURNAL OF SOLID STATE CHEMISTRY, 177 2726-2732 (2004)
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Nova |
2004 |
Kennedy BJ, Howard CJ, Kubota Y, Kato K, 'Phase transition behaviour in the A-site deficient perovskite oxide La1/3NbO3', JOURNAL OF SOLID STATE CHEMISTRY, 177 4552-4556 (2004)
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2004 |
Howard CJ, Zhang ZM, 'Structure for perovskites with layered ordering of A-site cations', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 60 249-251 (2004)
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2004 |
Howard CJ, Stokes HT, 'Octahedral tilting in cation-ordered perovskites - a group-theoretical analysis', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 60 674-684 (2004)
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2004 |
Howard CJ, Zhang ZM, 'Structure for perovskites with layered ordering of A-site cations (vol B60, pg 249, 2004)', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 60 763-763 (2004)
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2004 |
Kennedy BJ, Howard CJ, 'Synchrotron x-ray powder diffraction study of the structural phase transition in CaBr2', PHYSICAL REVIEW B, 70 (2004)
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2003 |
Howard CJ, Kennedy BJ, Woodward PM, 'Ordered double perovskites - a group-theoretical analysis', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 59 463-471 (2003)
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2003 |
Zhou QD, Kennedy BJ, Howard CJ, 'Structural studies of the ferroelectric phase transition in Bi4Ti3O12', CHEMISTRY OF MATERIALS, 15 5025-5028 (2003)
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2003 |
Howard CJ, Zhang ZM, 'Structures and phase transition in the layered perovskite La0.6Sr0.1TiO3: a new orthorhombic structure solved from high-resolution diffraction in combination with group theoretical analysis', JOURNAL OF PHYSICS-CONDENSED MATTER, 15 4543-4553 (2003)
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2003 |
Kisi EH, Piltz RO, Forrester JS, Howard CJ, 'The giant piezoelectric effect: electric field induced monoclinic phase or piezoelectric distortion of the rhombohdral parent', Journal of Physics: Condensed Matter, 15 3631 3640 (2003) [C1]
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Nova |
2002 |
Howard CJ, 'Crystallography and crystallographers. Personal reflections on the past, the present and the future of crystallography on the occasion of the 125-year anniversary of Zeitschrift fur Kristallographie', ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 217 319-320 (2002)
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2002 |
Howard CJ, Stokes HT, 'Group-theoretical analysis of octahedral tilting in perovskites. (vol B54, pg 782, 1998)', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 58 565-565 (2002)
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2002 |
Stokes H, Kisi EH, Howard C, Hatch D, 'Group-theoretical analysis of octahedral tilting in ferroelectric perovskites', ACTA Crystallographica Section B-Structural Science, B58 934-938 (2002) [C1]
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2002 |
Howard CJ, Luca V, Knight KS, 'High-temperature phase transitions in tungsten trioxide - the last word?', JOURNAL OF PHYSICS-CONDENSED MATTER, 14 377-387 (2002)
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2002 |
Macquart R, Kennedy BJ, Hunter BA, Howard CJ, 'High-temperature structural studies of PbBi2M2O9 (M = Nb and Ta)', JOURNAL OF PHYSICS-CONDENSED MATTER, 14 7955-7962 (2002)
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Nova |
2002 |
Macquart R, Kennedy BJ, Hunter BA, Howard CJ, Shimakawa Y, 'Structural phase transitions in the ferroelectric oxide SrBi2Ta2O9', INTEGRATED FERROELECTRICS, 44 101-112 (2002)
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2002 |
Macquart R, Kennedy BJ, Vogt T, Howard CJ, 'Phase transition in BaBi2Nb2O9: Implications for layered ferroelectrics', PHYSICAL REVIEW B, 66 (2002)
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2002 |
Hester JR, Howard CJ, Kennedy BJ, Macquart R, 'High-temperature structural studies of SrPbO3 and BaPbO3', AUSTRALIAN JOURNAL OF CHEMISTRY, 55 543-545 (2002)
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2001 |
Wong TKY, Kennedy BJ, Howard CJ, Hunter BA, Vogt T, 'Crystal structures and phase transitions in the SrTiO3-SrZrO3 solid solution', JOURNAL OF SOLID STATE CHEMISTRY, 156 255-263 (2001)
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2001 |
Howard CJ, Withers RL, Kennedy BJ, 'Space group and structure for the perovskite Ca0.5Sr0.5TiO3', JOURNAL OF SOLID STATE CHEMISTRY, 160 8-12 (2001)
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2001 |
Kennedy BJ, Howard CJ, Thorogood GJ, Hester JR, 'The influence of composition and temperature on the phases in Sr1-xBaxZrO3 perovskites: A high-resolution powder diffraction study', JOURNAL OF SOLID STATE CHEMISTRY, 161 106-112 (2001)
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2001 |
Moussa SM, Kennedy BJ, Hunter BA, Howard CJ, Vogt T, 'Low temperature structural studies on PrAlO3', JOURNAL OF PHYSICS-CONDENSED MATTER, 13 L203-L209 (2001)
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2000 |
Howard CJ, Kisi EH, 'Measurement of single-crystal elastic constants by neutron diffraction from polycrystals. (vol 32, pg 624, 1999)', JOURNAL OF APPLIED CRYSTALLOGRAPHY, 33 418-418 (2000)
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2000 |
Howard CJ, Kisi EH, 'Preferred orientation in Debye-Scherrer geometry: interpretation of the March coefficient', Journal of Applied Crystallography, 33 1434-1435 (2000) [C1]
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2000 |
Kennedy BJ, Howard CJ, Thorogood GJ, Mestre MAT, Hester JR, 'Structural characterization of the perovskite series La1-xSrxCr1-xTixO3', JOURNAL OF SOLID STATE CHEMISTRY, 155 455-457 (2000)
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2000 |
Howard CJ, Kennedy BJ, Chakoumakos BC, 'Neutron powder diffraction study of rhombohedral rare-earth aluminates and the rhombohedral to cubic phase transition', JOURNAL OF PHYSICS-CONDENSED MATTER, 12 349-365 (2000)
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2000 |
Howardq CJ, Knight KS, Kennedy BJ, Kisi EH, 'The structural phase transitions in strontium zirconate revisted', Jnl. of Physics - Condensed Matter, 12 L677-L683 (2000) [C1]
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1999 |
Kennedy BJ, Howard CJ, Chakoumakos BC, 'Phase transitions in perovskite at elevated temperatures - A powder neutron diffraction study', Journal of Physics Condensed Matter, 11 1479-1488 (1999)
The structure of CaTiO3 has been studied at high temperatures by powder neutron diffraction methods. From inspection of the diffraction data two phase transitions are evident, wit... [more]
The structure of CaTiO3 has been studied at high temperatures by powder neutron diffraction methods. From inspection of the diffraction data two phase transitions are evident, with an intermediate tetragonal (14/mcm) structure forming near 1500 K and a primitive cubic (Pm3¯m) structure above 1580 K. Detailed Rietveld analyses of the data suggest there may also be a phase transition from the room temperature Pbnm structure to an orthorhombic Cmcm structure around 1380 K. A remarkable feature of the results is the regular variation in the out-of-phase octahedral tilt angle over the entire temperature range.
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1999 |
Howard CJ, Kisi EH, 'Measurement of single-crystal elastic constants by neutron diffraction from polycrystals', Journal of Applied Crystallography, 32 624-633 (1999) [C1]
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1999 |
Hunter BA, Howard CJ, Kim DJ, 'Bond valence analysis of tetragonal zirconias', JOURNAL OF SOLID STATE CHEMISTRY, 146 363-368 (1999)
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1999 |
Kennedy BJ, Howard CJ, Chakoumakos BC, 'Phase transitions in perovskite at elevated temperatures - a powder neutron diffraction study', JOURNAL OF PHYSICS-CONDENSED MATTER, 11 1479-1488 (1999)
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1999 |
Howard CJ, Kennedy BJ, 'The orthorhombic and rhombohedral phases of LaGaO3 - a neutron powder diffraction study', JOURNAL OF PHYSICS-CONDENSED MATTER, 11 3229-3236 (1999)
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1999 |
Kennedy BJ, Prodjosantoso AK, Howard CJ, 'Powder neutron diffraction study of the high temperature phase transitions in NaTaO3', JOURNAL OF PHYSICS-CONDENSED MATTER, 11 6319-6327 (1999)
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1999 |
Kennedy BJ, Howard CJ, Chakoumakos BC, 'High-temperature phase transitions in SrZrO3', PHYSICAL REVIEW B, 59 4023-4027 (1999)
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1999 |
Kennedy BJ, Howard CJ, Chakoumakos BC, 'High-temperature phase transitions in SrHfO3', PHYSICAL REVIEW B, 60 2972-2975 (1999)
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1998 |
Howard CJ, Hunter BA, Kim DJ, 'Oxygen position and bond lengths from lattice parameters in tetragonal zirconias', JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 81 241-243 (1998)
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1998 |
Hunter BA, Howard CJ, Kim DJ, 'Neutron diffraction study of tetragonal zirconias containing tetravalent dopants', AUSTRALIAN JOURNAL OF PHYSICS, 51 539-545 (1998)
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1998 |
Howard CJ, Stokes HT, 'Group-theoretical analysis of octahedral tilting in perovskites', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 54 782-789 (1998)
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1998 |
Kisi EH, Howard CJ, 'The Elastic Constants of Tetragonal Zirconia Measured by a New Powder Diffraction Technique', Journal of the American Ceramic Society, 81 1682-1684 (1998) [C1]
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1997 |
Gadd GE, Kennedy SJ, Moricca S, Howard CJ, Elcombe MM, Evans PJ, James M, 'Neutron-diffraction study of the rare-gas interstitial fullerene ArC60', PHYSICAL REVIEW B, 55 14794-14799 (1997)
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1997 |
Kisi EH, Kennedy SJ, Howard CJ, 'Neutron Diffraction Observations of Ferroelastic Domain Switching and Tetragonal-to-Monoclinic Transformation in Ce-TZP', Journal of the American Ceramic Society, 80 621-628 (1997) [C1]
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1997 |
Kennedy BJ, Hunter BA, Howard CJ, 'Structural and bonding trends in tin pyrochlore oxides', JOURNAL OF SOLID STATE CHEMISTRY, 130 58-65 (1997)
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1997 |
Bolzan AA, Fong C, Kennedy BJ, Howard CJ, 'Structural studies of rutile-type metal dioxides', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 53 373-380 (1997)
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1996 |
Elcombe MM, Campbell SJ, Howard CJ, Buttner HG, Aubertin F, 'The crystal structure of Zr2NiD4', JOURNAL OF ALLOYS AND COMPOUNDS, 232 174-179 (1996)
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1996 |
Elcombe MM, Campbell SJ, Howard CJ, Büttner HG, Aubertin F, 'The crystal structure of Zr
The crystal structure of Zr2NiD4 at room temperature has been investigated by high resolution neutron powder diffraction. The diffraction pattern has been successfully fitted on t... [more]
The crystal structure of Zr2NiD4 at room temperature has been investigated by high resolution neutron powder diffraction. The diffraction pattern has been successfully fitted on the basis of a monoclinic structure in space group I2/c with cell parameters a = 0.6789 nm, b = 0.6758 nm, c = 0.5675 nm, ß = 91.04° relative to the neutron wavelength of 0.1893(1) nm. The site occupancies of the deuterium atoms are compared with model calculations and results from previous X-ray and neutron data from Zr2Ni hydrides and deuterides of similar compositions based on the similar tetragonal CuAl2-type structure of Zr2Ni.
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1995 |
BOLZAN AA, KENNEDY BJ, HOWARD CJ, 'NEUTRON POWDER DIFFRACTION STUDY OF MOLYBDENUM AND TUNGSTEN DIOXIDES', AUSTRALIAN JOURNAL OF CHEMISTRY, 48 1473-1477 (1995)
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1995 |
ARGYRIOU DN, HOWARD CJ, 'REINVESTIGATION OF YTTRIA-TETRAGONAL ZIRCONIA POLYCRYSTAL (Y-TZP) BY NEUTRON POWDER DIFFRACTION - A CAUTIONARY TALE', JOURNAL OF APPLIED CRYSTALLOGRAPHY, 28 206-208 (1995)
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1994 |
ARGYRIOU DN, HOWARD CJ, SMITH RI, 'AT TEMPERATURE NEUTRON-DIFFRACTION INVESTIGATION OF THE AGING PROCESS IN MAGNESIA PARTIALLY-STABILIZED ZIRCONIA', JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 77 3073-3076 (1994)
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1994 |
BOLZAN AA, FONG C, KENNEDY BJ, HOWARD CJ, 'A POWDER NEUTRON-DIFFRACTION STUDY OF SEMICONDUCTING AND METALLIC NIOBIUM DIOXIDE', JOURNAL OF SOLID STATE CHEMISTRY, 113 9-14 (1994)
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1994 |
BUTTNER HG, KEARLEY GJ, HOWARD CJ, FILLAUX F, 'STRUCTURE OF THE HOFMANN CLATHRATES NI(NH3)2NI(CN)4.2C6D6 AND ZN(NH3)2NI(CN)4.2C6H6', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 50 431-435 (1994)
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1994 |
HOWARD CJ, KENNEDY SJ, 'NEUTRON-DIFFRACTION', MATERIALS FORUM, 18 155-176 (1994)
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1994 |
Hannink RHJ, Howard CJ, Kisi EH, Swain MV, 'Relationship between Fracture. Toughness and Phase Assemblage in Mg-PSZ', Journal of the American Ceramic Society, 77 571-579 (1994) [C1]
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1993 |
Facer GR, Howard CJ, Kennedy BJ, 'Structure refinement and calculated X-ray powder data for the pyrochlore Y2Sn2O7 derived from powder neutron data', Powder Diffraction, 8 245-248 (1993)
The structure of pyrochlore type Y2Sn2O7 has been refined by Rietveld analysis from 1.4925 A neutron powder diffraction data collected at 295 K and containing 46 independent refle... [more]
The structure of pyrochlore type Y2Sn2O7 has been refined by Rietveld analysis from 1.4925 A neutron powder diffraction data collected at 295 K and containing 46 independent reflections. The refinement figures of merit were RP=0.041, RWP=0.055, Rexp=0.039, and RB=0.006. The structure is a pyrochlore type, space group (S.G.) Fd3m with a=10.3723(l) A, Dx=6.21 g cm-3, and with the oxygen position parameter of 0.33694(5). The Sn atoms are in a nearly regular octahedral coordination whereas the Y has a distorted 8-fold coordination geometry. The anisotropic thermal parameters were also determined. The refined model has been used to calculate a set of d-I X-ray data for search/match analysis. © 1993, Cambridge University Press. All rights reserved.
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1993 |
BOLZAN AA, FONG C, KENNEDY BJ, HOWARD CJ, 'POWDER NEUTRON-DIFFRACTION STUDY OF PYROLUSITE, BETA-MNO2', AUSTRALIAN JOURNAL OF CHEMISTRY, 46 939-944 (1993)
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1993 |
SAKATA M, UNO T, TAKATA M, HOWARD CJ, 'MAXIMUM-ENTROPY-METHOD ANALYSIS OF NEUTRON-DIFFRACTION DATA', JOURNAL OF APPLIED CRYSTALLOGRAPHY, 26 159-165 (1993)
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1993 |
CRAVEN CJ, HATTON PD, HOWARD CJ, PAWLEY GS, 'THE STRUCTURE AND DYNAMICS OF SOLID BENZENE .1. A NEUTRON POWDER DIFFRACTION STUDY OF DEUTERATED BENZENE FROM 4 K TO THE MELTING-POINT', JOURNAL OF CHEMICAL PHYSICS, 98 8236-8243 (1993)
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1992 |
ARGYRIOU DN, HOWARD CJ, 'EVALUATION OF ELECTROSTATIC POTENTIALS AND MADELUNG CONSTANTS IN IONIC-CRYSTALS BY THE METHOD OF SPHERICALLY SYMMETRICAL EQUIVALENT CHARGES', AUSTRALIAN JOURNAL OF PHYSICS, 45 239-252 (1992)
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1992 |
Kisi EH, Howard CJ, 'Neutron Diffraction Studies of Zirconia Toughened Engineering Ceramics', Neutron News, 3 24-28 (1992)
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1991 |
HOWARD CJ, KISI EH, OHTAKA O, 'CRYSTAL-STRUCTURES OF 2 ORTHORHOMBIC ZIRCONIAS', JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 74 2321-2323 (1991)
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1991 |
HOWARD CJ, HILL RJ, 'THE POLYMORPHS OF ZIRCONIA - PHASE ABUNDANCE AND CRYSTAL-STRUCTURE BY RIETVELD ANALYSIS OF NEUTRON AND X-RAY-DIFFRACTION DATA', JOURNAL OF MATERIALS SCIENCE, 26 127-134 (1991)
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1991 |
HOWARD CJ, SABINE TM, DICKSON F, 'STRUCTURAL AND THERMAL PARAMETERS FOR RUTILE AND ANATASE', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 47 462-468 (1991)
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1990 |
Hatton PD, Howard CJ, McMahon M, Nelmes RJ, Wilding N, 'The application of neutron powder diffraction techniques for crystallographic studies at high pressures', High Pressure Research, 4 450-452 (1990)
For phase transition studies, neutron powder diffraction offers a number of important advantages over x-ray based techniques, for example ab-initio structural determination. There... [more]
For phase transition studies, neutron powder diffraction offers a number of important advantages over x-ray based techniques, for example ab-initio structural determination. There are two distinct methods using either monochromatic angular dispersive geometry on a reactor cold source or time-of-flight 'energy-dispersive techniques requiring a pulsed neutron source. Both techniques offer comparable resolution but have differing advantages for high pressure studies. Recent studies illustrate the benefits of the two methods and the application of these to solve unknown crystal structures. © 1990, Taylor & Francis Group, LLC. All rights reserved.
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1990 |
HOWARD CJ, KISI EH, ROBERTS RB, HILL RJ, 'NEUTRON-DIFFRACTION STUDIES OF PHASE-TRANSFORMATIONS BETWEEN TETRAGONAL AND ORTHORHOMBIC ZIRCONIA IN MAGNESIA-PARTIALLY-STABILIZED ZIRCONIA', JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 73 2828-2833 (1990)
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1990 |
HOWARD CJ, KISI EH, 'POLYMORPH METHOD DETERMINATION OF MONOCLINIC ZIRCONIA IN PARTIALLY-STABILIZED ZIRCONIA CERAMICS', JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 73 3096-3099 (1990)
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1989 |
KISI EH, HOWARD CJ, HILL RJ, 'CRYSTAL-STRUCTURE OF ORTHORHOMBIC ZIRCONIA IN PARTIALLY STABILIZED ZIRCONIA', JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 72 1757-1760 (1989)
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1989 |
HOWARD CJ, NELMES RJ, VETTIER C, 'A NEUTRON POWDER DIFFRACTION STUDY OF THE EFFECT OF PRESSURE ON THE CRYSTAL-STRUCTURE OF LA2CUO4', SOLID STATE COMMUNICATIONS, 69 261-264 (1989)
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1988 |
Bastow TJ, Elcombe MM, Howard CJ, 'Ferro and antiferroelectric phases of the alkali hydroxides', Ferroelectrics, 79 269-271 (1988)
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1988 |
BASTOW TJ, ELCOMBE MM, HOWARD CJ, 'FERROELECTRIC AND ANTIFERROELECTRIC PHASES OF THE ALKALI HYDROXIDES', FERROELECTRICS, 79 563-565 (1988)
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1988 |
HOWARD CJ, HILL RJ, REICHERT BE, 'STRUCTURES OF THE ZRO2 POLYMORPHS AT ROOM-TEMPERATURE BY HIGH-RESOLUTION NEUTRON POWDER DIFFRACTION', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 44 116-120 (1988)
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1987 |
HILL RJ, HOWARD CJ, 'QUANTITATIVE PHASE-ANALYSIS FROM NEUTRON POWDER DIFFRACTION DATA USING THE RIETVELD METHOD', JOURNAL OF APPLIED CRYSTALLOGRAPHY, 20 467-474 (1987)
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1987 |
BASTOW TJ, ELCOMBE MM, HOWARD CJ, 'LOW-TEMPERATURE PHASE-TRANSITION IN CSOH AND CSOD', SOLID STATE COMMUNICATIONS, 62 149-151 (1987)
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1987 |
LAMBRINEAS P, FINLAYSON TR, GRIFFITHS JR, HOWARD CJ, SMITH TF, 'NEUTRON-DIFFRACTION RESIDUAL-STRESS MEASUREMENTS ON A THIN STEEL PLATE', NDT INTERNATIONAL, 20 285-290 (1987)
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1986 |
Nelmes RJ, Kuhs WF, Howard CJ, Tibballs JE, Ryan TW, 'Erratum: Structural evidence for centre-of-mass motion in the ferroelectric fluctuation of KDP and DKDP (Journal of Physics C: Solid State Physics (1985) 18 (L1023-L1030))', Journal of Physics C: Solid State Physics, 19 (1986)
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1986 |
BASTOW TJ, ELCOMBE MM, HOWARD CJ, 'LOW-TEMPERATURE PHASE-TRANSITION IN NAOD', SOLID STATE COMMUNICATIONS, 57 339-341 (1986)
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1986 |
BASTOW TJ, ELCOMBE MM, HOWARD CJ, 'LOW-TEMPERATURE PHASE-TRANSITION IN KOH AND KOD', SOLID STATE COMMUNICATIONS, 59 257-259 (1986)
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1986 |
STERNS M, PARISE JB, HOWARD CJ, 'REFINEMENT OF THE STRUCTURE OF TRILEAD(II) URANATE(VI) FROM NEUTRON POWDER DIFFRACTION DATA', ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS, 42 1275-1277 (1986)
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1985 |
HILL RJ, HOWARD CJ, 'PEAK SHAPE VARIATION IN FIXED-WAVELENGTH NEUTRON POWDER DIFFRACTION AND ITS EFFECT ON STRUCTURAL PARAMETERS OBTAINED BY RIETVELD ANALYSIS', JOURNAL OF APPLIED CRYSTALLOGRAPHY, 18 173-180 (1985)
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1985 |
NELMES RJ, KUHS WF, HOWARD CJ, TIBBALLS JE, RYAN TW, 'STRUCTURAL ORDERING BELOW TC IN KDP AND DKDP', JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 18 L711-L716 (1985)
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1985 |
NELMES RJ, KUHS WF, HOWARD CJ, TIBBALLS JE, RYAN TW, 'STRUCTURAL EVIDENCE FOR CENTRE-OF-MASS MOTION IN THE FERROELECTRIC FLUCTUATION OF KDP AND DKDP', JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 18 1023-1030 (1985)
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1985 |
WILTSHIRE MCK, ELCOMBE MM, HOWARD CJ, 'TEMPERATURE-DEPENDENCE OF THE MAGNETIC EXCITATIONS IN GAMMA-MN90CU10', JOURNAL OF PHYSICS F-METAL PHYSICS, 15 1595-1611 (1985)
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1984 |
HOWARD CJ, 'THE PEAK IN NEUTRON POWDER DIFFRACTION - COMMENT', JOURNAL OF APPLIED CRYSTALLOGRAPHY, 17 482-483 (1984)
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1984 |
NELMES RJ, HOWARD CJ, RYAN TW, DAVID WIF, SCHULTZ AJ, LEUNG PCW, 'A NEUTRON AND X-RAY-DIFFRACTION STUDY OF THE PHASE-TRANSITIONS IN PROUSTITE (AG3ASS3) BETWEEN 35 K AND ROOM-TEMPERATURE', JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 17 L861-L865 (1984)
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1984 |
PARISE JB, SMITH PPK, HOWARD CJ, 'CRYSTAL-STRUCTURE REFINEMENT OF SN3SB2S6 BY HIGH-RESOLUTION NEUTRON POWDER DIFFRACTION', MATERIALS RESEARCH BULLETIN, 19 503-508 (1984)
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1983 |
HOWARD CJ, BALL CJ, DAVIS RL, ELCOMBE MM, 'THE AUSTRALIAN HIGH-RESOLUTION NEUTRON POWDER DIFFRACTOMETER', AUSTRALIAN JOURNAL OF PHYSICS, 36 507-518 (1983)
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1982 |
HOWARD CJ, 'THE APPROXIMATION OF ASYMMETRIC NEUTRON POWDER DIFFRACTION PEAKS BY SUMS OF GAUSSIANS', JOURNAL OF APPLIED CRYSTALLOGRAPHY, 15 615-620 (1982)
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1982 |
HOWARD CJ, TAYLOR JC, WAUGH AB, 'CRYSTALLOGRAPHIC PARAMETERS IN ALPHA-UF5 AND U2F9 BY MULTIPHASE REFINEMENT OF HIGH-RESOLUTION NEUTRON POWDER DATA', JOURNAL OF SOLID STATE CHEMISTRY, 45 396-398 (1982)
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1982 |
SABINE TM, HOWARD CJ, 'DETERMINATION OF THE OXYGEN-X PARAMETER IN RUTILE BY NEUTRON POWDER METHODS', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 38 701-702 (1982)
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1982 |
Sabine TM, Howard CJ, 'Determination of the oxygen x parameter in rutile by neutron powder methods.', Acta Crystallographica, B38 701-702 (1982)
Profile-refinement of neutron powder intensity data gives a value for the oxygen x parameter in rutile which agrees with the reported X-ray values (Abrahams & Bernstein, Journ... [more]
Profile-refinement of neutron powder intensity data gives a value for the oxygen x parameter in rutile which agrees with the reported X-ray values (Abrahams & Bernstein, Journal of Chemical Physics, 55, 1971, pp 3206-3211; M.A. 76-1408). The cell dimensions were also refined: a 4.5922(1), c 2.9590(0) A (space group P42/mnm). -J.E.C.
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1980 |
BOUCHERLE JX, DELAPALME A, HOWARD CJ, ROSSATMIGNOD J, VOGT O, 'POLARIZED NEUTRON DETERMINATION OF THE GROUND-STATE OF CE3+ IN CESB', PHYSICA B & C, 102 253-257 (1980)
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1979 |
HOWARD CJ, KUWANO N, 'DIFFRACTION OF X-RAYS BY FACE-CENTERED CUBIC-CRYSTALS CONTAINING EXTRINSIC STACKING-FAULTS - DERIVATION FROM THE GENERAL-THEORY', ACTA CRYSTALLOGRAPHICA SECTION A, 35 337-338 (1979)
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1979 |
TURNER KE, BOWDEN BF, STOKIE GJ, HOWARD CJ, '(4R-STAR,8S-STAR,11R-STAR,13S-STAR,14R-STAR)-8,11-EPOXY-14-HYDROXY-11-METHYL-4-(1-METHYLVINYL)-6,9-DIOXOCYCLOTETRADEC-1-ENE-1,13-CARBOLACTONE', ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 35 1283-1284 (1979)
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1978 |
HOWARD CJ, 'DISPLACEMENT-FIELDS FOR DOUBLE FORCES IN AN ELLIPSOID', JOURNAL OF APPLIED PHYSICS, 49 6165-6166 (1978)
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1977 |
BORDAS J, GLAZER AM, HOWARD CJ, BOURDILLON AJ, 'ENERGY-DISPERSIVE DIFFRACTION FROM POLYCRYSTALLINE MATERIALS USING SYNCHROTRON RADIATION', PHILOSOPHICAL MAGAZINE, 35 311-323 (1977)
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1977 |
HOWARD CJ, 'DIFFRACTION OF X-RAYS BY FACE-CENTERED CUBIC-CRYSTALS CONTAINING EXTRINSIC STACKING-FAULTS', ACTA CRYSTALLOGRAPHICA SECTION A, 33 29-32 (1977)
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Nova |
1977 |
HOWARD CJ, JONES RDG, 'X-RAY-DIFFRACTION STUDY OF NAF', ACTA CRYSTALLOGRAPHICA SECTION A, 33 776-783 (1977)
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1977 |
SKAKUN EN, 'CORRECTION', MULTIVARIATE BEHAVIORAL RESEARCH, 12 68-68 (1977) |
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1976 |
HOWARD CJ, BROWN LM, 'MEAN STRAIN IN CRYSTALS CONTAINING DISLOCATION LOOPS', JOURNAL OF APPLIED PHYSICS, 47 4685-4687 (1976)
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1976 |
HOWARD HJ, JONES RDG, 'PROBLEM OF WHITE RADIATION IN MEASUREMENT OF INTENSITIES WITH A SOLID-STATE DETECTOR', JOURNAL OF APPLIED CRYSTALLOGRAPHY, 9 235-235 (1976)
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1974 |
HOWARD CJ, SABINE TM, 'X-RAY-DIFFRACTION PROFILES FROM NEUTRON-IRRADIATED MAGNESIUM-OXIDE', JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 7 3453-3466 (1974)
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1974 |
HOWARD CJ, KHADAKE RG, 'X-RAY DETERMINATION OF THERMAL PARAMETERS FOR LIF', ACTA CRYSTALLOGRAPHICA SECTION A, A 30 296-296 (1974)
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1971 |
HOWARD CJ, 'LOCATION OF DIFFUSE MAXIMA IN X-RAY SCATTERING PATTERN FROM DISTORTED CRYSTALS', ACTA CRYSTALLOGRAPHICA SECTION A-CRYSTAL PHYSICS DIFFRACTION THEORETICAL AND GENERAL CRYSTALLOGRAPHY, A 27 613-& (1971)
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1970 |
Allen PS, Howard CJ, 'On the model for a tunnelling methyl group', CHEMICAL PHYSICS LETTERS, 6 169-171 (1970)
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1969 |
ALLEN PS, HOWARD CJ, 'HINDERED ROTATION IN METHYLBENZENES', MOLECULAR PHYSICS, 16 311-& (1969)
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1965 |
HANNAFORD P, HOWARD CJ, WIGNALL JWG, 'EFFECT OF RADIATION DAMAGE ON 23.8 KEV MOSSBAUER TRANSITION IN 119SN', PHYSICS LETTERS, 19 257-+ (1965)
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