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Publications

Publications List

Below is a list of all publications produced by the Ferroelectrics and Crystallography group at the University of Warwick. It is also available for download as a .pdf file here. Professor Thomas' Researcher ID profile can be found by clicking on the badge below.




Refereed Papers in Scientific Journals

2014

N. ZHANG, H. YOKOTA, A.M. GLAZER, Z. REN, D. A. KEEN, D. S. KEEBLE, P. A. THOMAS & Z-G YE, The missing phase boundary in PbZr1-xTixO3, Nature Communications, In Press (October 2014)

Z. REN, D. WALKER, N. ZHANG, J. WU, Z. XIE, P. A. THOMAS & Z-G YE, Study of an intermediate ferroelectric phase in a new antiferroelectric PbZrO3-Pb(Mn0.5W0.5)O3 solid solution, Submitted to Applied Physics Letters (September 2014)

R. OTERO-LORENZO, M. C. WEBER, P. A. THOMAS, J. KREISEL & V. SALQUEIRINO
Interplay of chemical structure and magnetic order coupling at the interface between Cr2O3 and Fe3O4 in hybrid nanocomposites, Phys. Chem. Chem. Phys. 16, 22337-22342 (2014)

D. GHOSH, A. SAKATA, J. CARTER, P. A. THOMAS, H. HAN, J. C. NINO & J. L. JONES, Domain wall displacement is the origin of superior permittivity and piezoelectricity in BaTiO3 at intermediate grain sizes, Advanced Functional Materials 24(7), 885-896 (2014)

R. BEANLAND & P. A. THOMAS, Symmetry and defects in rhombohedral single-crystalline Na0.5Bi0.5TiO3, Phys. Rev. B 89(17) 4102-4110 (2014) (selected as an Editor’s Highlight)

D. I. WOODWARD, R. DITTMER, W. JO, D. WALKER, D. S. KEEBLE, M. W. DALE, J. RODEL & P. A. THOMAS, Investigation of the depolarization transition in Bi-based relaxor ferroelectrics, J. Appl. Phys. 115(11) (2014)

R. GRAYBURN, M. DOWSETT, M. de KEERSMACKER, E. WESTENBRINK. J. A. COVINGTON, J. B. CRAWFORD, M. HAND, D. WALKER, P. A. THOMAS, D. BANERJEE & A. ADRIAENS, Time-lapse synchrotron X-ray diffraction to monitor conservation coatings for heritage lead in atmospheres polluted with oak-emitted volatile organic compounds, Corrosion Science 82, 280-289 (2014)

2013

F. CORDERO, F. CRACIUN, F. TREQUATTRINI, A. M. GLAZER & P. A. THOMAS, Splitting of the transition to the antiferroelectric state in PbZr0.95Ti0.05O3 into polar and antiferrodistortive components, Phys. Rev. B 88(9), 94107-94114 (2013)

M. J. ASHWIN, R. J. H. MORRIS, D. WALKER, P. A. THOMAS, M. G. DOWSETT, T. S. JONES & T. D. VEAL, Molecular-beam epitaxy and lattice parameter of GaNxSb1-x: deviation from Vegard's law for x > 0.02, J. Phys. D: Appl. Phys. 46(26), 264003 (2013)

R. BEANLAND, P. J. THOMAS, D. I. WOODWARD, P. A. THOMAS & R. A. ROEMER, Digital electron diffraction - seeing the whole picture, Acta. Cryst. A 69, 427-434 (2013)

D. S. KEEBLE, F. BENABDALLAH, P. A. THOMAS, M. MAGLIONE & J. KREISEL, Revised structural phase diagram of (Ba0.7Ca0.3TiO3)-(BaZr0.2Ti0.8O3), Appl. Phys. Lett. 102(9), 092903 (2013)

G. VASTA, A. FETERIA, D. I. WOODWARD, D. WALKER, P. A. THOMAS & T. J. JACKSON, Thin film LaYbO3 capacitive structures grown by pulsed laser deposition, Thin Solid Films 527, 81-86 (2013)

M. J. ASHWIN, D. WALKER, P. A. THOMAS, T. S. JONES & T. D. VEAL, N incorporation in GaInNSb alloys and lattice matching to GaSb, J. Appl. Phys. 113(3), 033502 (2013)

D. S. KEEBLE, E. R. BARNEY, D. A. KEEN, M. G. TUCKER, J. KREISEL & P. A. THOMAS, Bifurcated Polarization Rotation in Bismuth-Based Piezoelectrics, Advanced Functional Materials 23(2), 185-190 (2013)

2012

S. K. V. FARAHANI, T. D. VEAL, A. M. SANCHEZ, O. BIERWAGEN, M. E. WHITE, S. GORFMAN, P. A. THOMAS, J. S. SPECK & C. F. MCCONVILLE, Influence of charged-dislocation density variations on carrier mobility in heteroepitaxial semiconductors: The case of SnO2 on sapphire, Phys. Rev. B. 86(24), 245315 (2012)

J. KREISEL, M. C. WEBER, N. Dix, F. SANCHEZ, P. A. THOMAS & J. FONTCUBERTA, Probing Individual Layers in Functional Oxide Multilayers by Wavelength-Dependent Raman Scattering, Advanced Functional Materials 22(23), 5044-5049 (2012)

A. O'BRIEN, D. I. WOODWARD, K. SARDAR, R. I. WALTON & P. A. THOMAS, Inference of oxygen vacancies in hydrothermal Na0.5Bi0.5TiO3, Appl. Phys. Lett. 101, 142902 (2012)

A. M. GLAZER, N. ZHANG, A. BARTASYTE, D. S. KEEBLE, S. HUBAND, P. A. THOMAS, I. GREGORA, F. BORODAVKA, S. MARGUERON & J. HLINKA, LiTaO3 crystals with near-zero birefringence, J. Appl. Cryst. 45, 1030-1037 (2012)

D. I. WOODWARD, M. R. LEES & P. A. THOMAS, Structural phase transitions in the Ag2Nb4O11-Na2Nb4O11 solid solution, J. Sol. Stat. Chem. 192, 385-389 (2012)

A. BARTASYTE, A. M. GLAZER, F. WONDRE, D. PRABHAKARAN, P. A. THOMAS, S. HUBAND, D. S. KEEBLE & S. MARGUERON, Growth of LiNb1-xTaxO3 solid solution crystals, Mat. Chem. & Phys. 134(2-3), 728-735 (2012)

S. GORFMAN, A. M. GLAZER, Y. NOGUCHI, M. MIYAYAM, H. LUO & P. A. THOMAS, Observation of a low-symmetry phase in Na0.5Bi0.5TiO3 crystals by optical birefringence microscopy, J. Appl. Cryst. 45, 444-452 (2012)

J. KREISEL, M. ALEXE & P. A. THOMAS, A photoferroelectric material is more than the sum of its parts, Nature Materials 11, 260-260 (2012)

M. C. WEBER, J. KREISEL, P. A. THOMAS, M. NEWTON, K. SARDAR & R. I. WALTON, Phonon Raman scattering of RCrO3 perovskites (R = Y, La, Pr, Sm, Gd, Dy, Ho, Yb, Lu), Phys. Rev. B 85, (2012)

2011

S. T. NORBERG, P. A. THOMAS & M. G. TUCKER, A neutron total scattering study of local coordination in KTiOPO4 from room temperature to 900 degrees C, J. Phys. C: Condensed Matter 23, (2011)

R. M. KOWALCZYK, T. F. KEMP, D. WALKER, K. J. PIKE, P. A. THOMAS, J. KREISEL, R. DUPREE, M. E. NEWTON, J. V. HANNA & M. E. SMITH, A variable temperature solid-state nuclear magnetic resonance, electron paramagnetic resonance and Raman scattering study of molecular dynamics in ferroelectric fluorides, J. Phys. C: Condensed Matter 23(31) 315402 (2011)

M. J. ASHWIN, T. D. VEAL, J. J. BOMPHREY, I. R. DUNN, D. WALKER, P. A. THOMAS & T. S. JONES, Controlled nitrogen incorporation in GaNSb alloys, AIP Advances 1, (2011)

H. YOKOTA, N. ZHANG, P. A. THOMAS & A. M. GLAZER, Crystal Structure Determinations of Zr Rich-PbZr1-xTixO3, Ferroelectrics 414, 147-154 (2011)

W. JO, J. E. DANIELS, J. L. JONES, X. L. TAN, P. A. THOMAS, D. DAMJANOVIC & J. RODEL, Evolving morphotropic phase boundary in lead-free Bi1/2Na1/2TiO3-BaTiO3 piezoceramics, J. Appl. Phys. 109(1), 014110 (2011)

D. I. WOODWARD & P. A. THOMAS, Ferroelectricity in the xAg2Nb4O11-(1-x)Na2Nb4O11 solid solution, Appl. Phys. Lett. 98(13), 132904 (2011)

S. GORFMAN, D. S. KEEBLE, A. M. GLAZER, X. LONG, Y. XIE, Z. G. YE, S. COLLINS & P. A. THOMAS, High-resolution X-ray diffraction study of single crystals of lead zirconate titanate, Physical Review B 84, 4 (2011)

T. KOBATA, G. TSUKAHARA, Y. UESU, S. HUBAND, S. GORFMAN, D. WALKER, P. A. THOMAS, H. YOKOTA, M. GLAZER & BARTASYTE, Structural investigation of LN/LT superlattice thin films by field effect scanning transmission electron microscopy equipped with electron dispersive x-ray spectroscopy, IEEE International Symposium on Applications of Ferroelectrics (2011)

R. BEANLAND & P. A. THOMAS, Imaging planar tetragonal sheets in rhombohedral Na0.5Bi0.5TiO3 using transmission electron microscopy, Scripta Materialia, 65, 440-443 (2011)

F. MASIELLO, T. A. LAFFORD, P. PERNOT, J. BARUCHEL, D. S. KEEBLE, P. A. THOMAS, A. ZUKAUSKAS, G. STROMQVIST, F. LAURELL & C. CANALIAS, Investigation by coherent X-ray section topography of ferroelectric domain behaviour as a function of temperature in periodically poled Rb:KTP, J. of Appl. Cryst. 44, 462-466 (2011)

N. ZHANG, H. YOKOTA, A. M. GLAZER & P. A. THOMAS, The not so simple cubic structure of PbZr1-xTixO3 (PZT): complex local structural effects in perovskites, Acta Cryst. B: Structural Science 67, 461-466 (2011)

E. AKSEL, J. S. FORRESTER, B. KOWALSKI, J. L. JONES & P. A. THOMAS, Phase transition sequence in sodium bismuth titanate observed using high-resolution X-ray diffraction, Appl. Phys. Lett. 99(22), 222901 (2011)

N. ZHANG, H. YOKOTA, A. M. GLAZER & P. A. THOMAS, Neutron powder diffraction refinement of PbZr1-xTixO3, Acta Cryst. B: Structural Science 67, 386-398 (2011)

E. AKSEL, J. S. FORRESTER, J. L. JONES, P. A. THOMAS, K. PAGE & M. R. SUCHOMEL, Monoclinic crystal structure of polycrystalline Na0.5Bi0.5TiO3, Appl. Phys. Lett. 98(15), 152901 (2011)

N. MASO, D. I. WOODWARD, P. A. THOMAS, A. VAREZ & A. R. WEST, Structural characterisation of ferroelectric Ag2Nb4O11 and dielectric Ag2Ta4O11, J. Materials Chemistry 21, 2715-2722 (2011)

2010

Z. A. D. LETHBRIDGE, D. S. KEEBLE, D. WALKER, P. A. THOMAS & R. I. WALTON, An investigation of the properties of large crystals of the zeolites dodecasil-3C and ferrierite by high-temperature birefringence microscopy and X-ray diffraction, J. of Appl. Cryst. 43, 168-175 (2010)

K. DATTA, P. A. THOMAS & K. ROLENDER, Anomalous phase transitions of lead-free piezoelectric xNa0.5Bi0.5TiO3-(1-x)BaTiO3 solid solutions with enhanced phase transition temperatures, Phys. Rev. B 82 (2010)

K. DATTA, E. SUARD, & P. A. THOMAS, Compositionally driven ferroelectric phase transition in xBiInO3-(1-x)BaTiO3: A lead-free perovskite-based piezoelectric material, Appl. Phys. Lett. 96 (2010)

P. A. THOMAS, S. TRUJILLO, M. BOUDARD, S. GORFMAN & J. KREISEL, Diffuse X-ray scattering in the lead-free piezoelectric crystals Na1/2Bi1/2TiO3 and Ba-doped Na1/2Bi1/2TiO3, Solid State Sciences 12, 311-317 (2010) Invited Paper to a Special Issue on Lead-free Piezoelectrics

K. DE WAEL, M. DE KEERSMAECKER, M. DOWSETT, D. WALKER, P. A. THOMAS & A. ADRIAENS, Electrochemical deposition of dodecanoate on lead in view of an environmentally safe corrosion inhibition, Journal of Solid State Electrochemistry 14, 407-413 (2010)

S. GORFMAN & P. A. THOMAS, Evidence for a non-rhombohedral average structure in the lead-free piezoelectric material Na0.5Bi0.5TiO3, J. Appl. Cryst. 43, 1409-1414 (2010)

K. A. SLOYAN, T. C. MAY-SMITH, M. ZERVAS, R. W. EASON, S. HUBAND, D. WALKER & P. A. THOMAS, Growth of crystalline garnet mixed films, superlattices and multilayers for optical applications via shuttered Combinatorial Pulsed Laser Deposition, Optics Express 18, 24679-24687 (2010)

A. M. GLAZER, N. ZHANG, A. BARTASYTE, D. S. KEEBLE, S. HUBAND & P. A. THOMAS, Observation of unusual temperature-dependent stripes in LiTaO3 and LiTaxNb1-xO3 crystals with near-zero birefringence, J. Appl. Cryst. 43, 1305-1313 (2010)

D. PHELAN, X. LONG, Y. XIE, Z. G. YE, A. M. GLAZER, H. YOKOTA, P. A. THOMAS & P. M. GEHRING, Single Crystal Study of Competing Rhombohedral and Monoclinic Order in Lead Zirconate Titanate, Phys. Rev. Lett. 105 (2010)

K. DATTA & P. A. THOMAS, Structural investigation of a novel perovskite-based lead-free ceramics xBiScO3-(1-x)BaTiO3, J. Appl. Phys. 107 (2010)

K. DATTA, D. WALKER & P. A. THOMAS, Structural investigations of the bismuth scandate-lead titanate xBiScO3-(1-x)PbTiO3 solid solution for 0.10 <= x <= 0.40, Phys. Rev B. 82 (2010)

2009

K. DATTA, K. ROLEDER & P. A. THOMAS, Enhanced tetragonality in lead-free piezoelectric (1-x)BaTiO3-xNa1/2Bi1/2TiO3 solid solutions where x=0.05-0.40, J. Appl. Physics 106 (2009)

K. DATTA, S. GORFMAN & P. A. THOMAS, On the symmetry of the morphotropic phase boundary in ferroelectric BiScO3-PbTiO3 system, Appl. Phys. Lett. 95 (2009)

N. ZHANG, A. M. GLAZER, D. BAKER & P. A. THOMAS, Structures of K0.05Na0.95NbO3 (50-300 K) and K0.30Na0.70NbO3 (100-200 K), Acta Cryst. B: Structural Science 65, 291-299 (2009)

A. RUTKOWSKA, D. WALKER, S. GORFMAN, P. A. THOMAS & J. V. MACPHERSON, Horizontal alignment of chemical vapor deposited SWNTs on single crystal quartz surfaces: further evidence for epitaxial alignment, J. Phys. Chem. C 113(39), 17087-17096 (2009)

H. YOKOTO, N. ZHANG, A. E. TAYLOR, P. A. THOMAS & A. M. GLAZER, The Crystal Structure of the Rhombohedral Phase of PbZr1-xTixO3 (PZT) Ceramics at Room Temperature, Phys. Rev. B 80, 104109 (2009) Highlighted Paper

D. W. BAKER, P. A. THOMAS, N. ZHANG & A. M. GLAZER, A Comprehensive Study of the Phase Diagram of KxNa1-xNbO3, Appl. Phys. Lett. 95, 091903 (2009)

D. S. KEEBLE & P. A. THOMAS, On the tetragonality of the room-temperature phase of barium titanate, BaTiO3, J. Appl. Cryst. 42, 480-284 (2009)

R. J. GOFF, D. S. KEEBLE, P. A. THOMAS, F. D. MORRISON & P. LIGHTFOOT, Leakage and proton conductivity in the predicted ferroelectric CsBiNb2O7, Chem. Mater. 21(7), 1296-1302 (2009)

N. ZHANG, A. M. GLAZER, D. W. BAKER & P. A. THOMAS, Low-temperature and room-temperature phases of Na0.95 K0.05NbO3 and Na0.70K0.30NbO3, Acta Cryst. B 65(3) (Structural Science) 291-299 (2009)

D. W. BAKER, P. A. THOMAS, N. ZHANG & A. M. GLAZER, A Structural study of KxNa1−xNbO3 (KNN) for compositions in the range from x=0.24 to x=0.36, Acta Cryst. B 65(1) (Structural Science) 22-28 (2009)

D. WALKER, P. A. THOMAS & S. P. COLLINS, A Comprehensive Investigation of the Structural Properties of Ferroelectric PbZr0.2Ti0.8O3 thin films grown by Pulsed Laser Deposition, Physica Status Solidi 208(6), 1799-1803 (2009) Special issue, selected papers from XTOP 2008 meeting on High-resolution X-ray Diffraction and Topography

L. BUCKLE, S.D. COOMBER, T. ASHLEY, P. H. JEFFERSON, D. WALKER, T. D. VEAL, C. F. McCONVILLE & P. A. THOMAS, Growth and characterisation of dilute antimonide nitride materials for long-wavelength applications, Microelectronics Journal 40(3), 399-402 (2009)

1998 - 2008

P.-E. JANOLIN, P. BOUVIER, J. KREISEL, P. A. THOMAS, I. A. KORNEV, L. BELLAICHE, W. CRICHTON, M. HANFLAND & B. DKHIL, High-pressure effect on PbTiO3: An investigation by Raman and X-ray scattering up to 63 GPa, Phys. Rev. Lett. 101 237601-4 (2008)

Z. REN, P. J. HEARD, J. M. MARSHALL, P. A. THOMAS, S. YU, Etching characteristics of LiNbO3 in reactive ion etching and inductively coupled plasma, J. Appl. Phys. 103 (3) Article number 034109 (2008)

J. M. MARSHALL, D. WALKER, P. A. ThOMAS, R. S. DOBEDOE, Z. REN & S. YU, Comparison of LiNbO3 flux systems for deposition on RIE-etched LiTaO3 substrates, J. Phys. D: Appl. Phys. 40, 7480-7484 (2007)

P. H. JEFFERSON, L. BUCKLE, T. D. VEAL, D. WALKER, B. R. BENNETT, L. F. J. PIPER, P. A. THOMAS, T. ASHLEY & C. F. McCONVILLE, Growth of dilute nitride alloys of GaInSb lattice-matched to GaSb, J. Cryst. Growth 304, 338-341 (2007)

D. WALKER, P. A. THOMAS, P. PERNOT & J. BARUCHEL, In-situ investigation of the nonlinear optical crystal Rubidium Titanyl Arsenate, RbTiOAsO4, under applied electric field using X-ray imaging, J. Appl. Cryst. 40, 505–512 (2007)

P. H. JEFFERSON, T. D. VEAL, L. BUCKLE, D. WALKER, P. A. THOMAS & T. ASHLEY, Growth, structural and optical characterisation of high quality MBE grown InNxSb1−x, Phys. Stat. Sol. (RRL) 1 104-106 (2007)

B. O. SKATDTCHENKO, Y. RAO, T. F. KEMP, P. BHATTACHARYA, P. A. THOMAS, M. E. SMITH & D. M. ANTONELLI, A Solid-State 17O NMR Study of Local Order and Crystallinity in Amine-Templated Mesoporous Nb Oxide, Angewandte Chemi International Edition 46, 2635-2638 (2007)

W. KLEEMANN, J. DEC, S. A. PROSANDEEV, T. BRAUN & P. A. THOMAS, Universal Domain Wall Dynamics in Ferroelectrics and Relaxors, Ferroelectrics 334 :3-10, 279-286 (2006)

P. BHATTACHARYA, M. E. SMITH & P. A. THOMAS, Investigation of the Local Structure in the PMN-PT Solid-solution by Solid-state NMR, Special Issue of Phase Transitions on Relaxor Ferroelectrics, Ed P.M.Gehring and K. Roleder, 79(1-2) 79-90 (2006) (Invited Paper)

P. E. JANOLIN, B. DKHIL, P. BOUVIER, J. KREISEL & P. A. THOMAS, Pressure instabilities up to 46GPa in the relaxor ferroelectric PbZn1/3Nb2/3O3, Matter and Materials Physics 73, 94128-1-9 (2006)

T. D. VEAL, L. F. J. PIPER, S. JOLLANDS, B. R. BENNETT, P. H. JEFFERSON, N. R. WILSON, P. A. THOMAS, C. F. MCCONVILLE, N. MURDIN, L. BUCKLE, G. W. SMITH & T. ASHLEY, Band Gap Reduction in GaNSb Alloys due to the Anion Mismatch, Appl. Phys. Lett. 13, 13201-3 (2005)

A. BALDWIN, P. A. THOMAS & R. DUPREE, A Multi-Nuclear NMR Study of the Local Structure of Lead Zirconate Titanate, PbZr1-xTixO3, J. Phys. C: Cond. Matter 17, 7159-7168 (2005)

S. TRUJILLO, J. E. KREISEL, Q. JIANG, J. H. SMITH, P. A. THOMAS, P. BOUVIER & F. WEISS, The high pressure behaviour of Ba-doped Na1/2Bi1/2TiO3 investigated by Raman spectroscopy, J. Phys. C: Cond. Matter 17, 6587-6597 (2005)

Th. BRAUN, W. KLEEMANN, J. DEC & P. A. THOMAS, Creep and Relaxation Dynamics of Domain Walls in Periodically-poled KTiOPO4, Phys. Rev. Lett. 94 117601-4 (2005)

V. RUIZ, P. G. NICHOLSON, S. JOLLANDS, P.A. THOMAS, J. V. MACPHERSON & P. R. UNWIN, Molecular Ordering and 2D Conductivity in Ultrathin poly(3-hexylthiophene)/gold nanoparticle composite films, J. Phys. Chem. B. 109, 19335-44 (2005)

D. WALKER, P. A. THOMAS, Q. JIANG, P. PERNOT, J. BARUCHEL & T. AYGUAVIVES, X-ray Imaging Investigation of Periodically-electroded Rubidium Titanyl Arsenate, RbTiOAsO4, under an Applied Electric Field, J. Phys. D: Appl. Phys. (Special issue on High-resolution X-ray Diffraction and Imaging) 38, A55-A60 (2005)

P. A. THOMAS, J. KREISEL, A. M. GLAZER, P. BOUVIER, Q. JIANG & R. SMITH, The High-pressure Structural Phase Transitions of Sodium Bismuth Titanate, Z. Krist (Special Issue on Phase Transitions) 220(8), 717-725, (2005) (Invited Paper)

A. M. GLAZER, P. A. THOMAS, K. Z.BABA-KISHI, G. K. H. PANG & C. W. TAI, The Morphotropic Phase Boundary in PbZr1-xTixO3 and the Importance of Short and Long-range Order, Phys. Rev. B. 70, 184123-9 (2004)

V. SHUVAEVA, D. ZEKRIA, A. M. GLAZER, Q.JIANG, S. M. WEBER, P. BHATTACHARYA & P. A. THOMAS, The Local Structure of (KxNa1-x)0.5Bi0.5TiO3, Phys. Rev. B. 71, 174114-8 (2005)

P. A. THOMAS, Q. JIANG, K. B. HUTTON & R. C. C. WARD, Rb-doped Potassium Titanyl Phosphate (RKTP) and Potassium Titanyl Arsenate (RKTA) for Periodic Ferroelectric Domain Inversion, "State of the Art: Periodically Microstructured Nonlinear Optical Materials", Chapter 17, pp219-225, Eds. E. Diéguez, V. Bermúdez, World Scientific (2004) (Invited Article)

P. A. THOMAS, A. BALDWIN, R. DUPREE, K. SCHWARZ, P. BLAHA, A. SAMOSAN & Z. H. GAN, Structure-property relationships in nonlinear optical crystal KTiOPO4 investigated using NMR and ab initio DFT calculations, J. Phys. Chem. B. 108(13), 4324-4331 (2004)

J. KREISEL, P. BOUVIER, B. DKHIL, B. CHAABANE, A. M. GLAZER, P. A. THOMAS & R. WELBERRY, Effect of high pressure on the relaxor ferroelectrics Na1/2Bi1/2TiO3 and PbMg1/3Nb2/3O3, Ferroelectrics 302, 539-544 (2004)

S. K. SINGH, P. A. THOMAS & S. B. PALMER, Microscopic investigation of nanoscale polar regions of Pb(Mg1/3Nb2/3)O3-PbTiO3 relaxor ferroelectric thin films, Ferroelectrics 302, 499-504 (2004)

J. KREISEL, P. BOUVIER, B. DKHIL, P. A. THOMAS, A. M. GLAZER, T. R. WELBERRY, B. CHAABANE & M. MEZOUAR, High-pressure X-ray Scattering of Oxides with a Nano-scaled Local Structure: a Case Study of Na0.5Bi0.5TiO3, Phys. Rev. B. 68, 14113-14119 (2003)

Q. JIANG, P. A. THOMAS, K. B. HUTTON, R. C. C. WARD, P. PERNOT & J. BARUCHEL, High-potassium KTiOPO4 Crystals for the Fabrication of Quasi-Phase-Matched Devices, J. Phys. D: Appl. Phys. 36, 1236-1241 (2003)

P. PERNOT, P. A. THOMAS, P. CLOETENS, T. S. LYFORD & J. BARUCHEL, Structural matching of ferroelectric domains and associated distortion in KTiOPO4 crystals, J. Phys. C: Cond. Matt. 15, 1613-1624 (2003)

D. PADRO, V. JENNINGS, M. E. SMITH, R. HOPPE, P. A. THOMAS & R. DUPREE, Variations of Titanium Interactions in Solid-State NMR – Correlations to Local Structure, J. Phys. Chem. B. 106, 13176-13185 (2002)

G. O. JONES, J. KREISEL,V. JENNINGS, M. A. GEDAY, P. A. THOMAS & A. M. GLAZER, Investigation of a Peculiar Relaxor Ferroelectric: Na0.5Bi0.5TiO3, Ferroelectrics 270, 191-196 (2002)

Q. JIANG, M. N. WOMERSLEY, P. A. THOMAS & J. P. ROURKE, Ferroelectric, Conductive and Dielectric Properties of Potassium Titanyl Phosphate (KTP) at Low Temperature, Phys. Rev. B. 66, 094102 (2002)

Q. JIANG, P. A. THOMAS, K. B. HUTTON & R. C. C. WARD, Rb-doped Potassium Titanyl Phosphate for Periodic Ferroelectric Domain Inversion, J. Appl. Phys. 92(5), 2717-2723 (2002)

P. A. THOMAS, R. C. C. WARD & K. B. HUTTON, UK Patent GB 0017516.6, 17 July 2000, “A Novel Low-Conductivity Variant of KTP for Periodic Poling” and International Patent WO 02/06570 (24 January 2002)

G. O. JONES, J. KREISEL & P. A .THOMAS, An Investigation of the Crystal Structures in the (NaxK1-x)0.5Bi0.5TiO3 Series, Powder Diffraction 17(4), 301-319 (2002)

G. O. JONES & P. A. THOMAS, An Investigation of the Crystal Structures and Phase Transitions of Na0.5Bi0.5TiO3, Acta. Cryst. B. 58(2), 168-178 (2002)

K. ROLEDER, I. FRANKE, A. M. GLAZER, P. A. THOMAS, S. MIGA & J. SUCHANICZ, The Piezoelectric Effect in Na0.5Bi0.5TiO3 Ceramics, J. Phys. Cond. Matt. 14, 5399-5406 (2002)

W. KAMINSKY, P. A. THOMAS & A. M. GLAZER, Optical Rotation in RbTiOAsO4 (point group mm2), Z. Kristallogr. 217, 1-7 (2002)

S. K. SINGH, P. A. THOMAS & S. B. PALMER, Crystalline Properties of Ferroelectric Relaxor PMN-PT Thin Films by Pulsed Laser Deposition, International Symposium on Applied Ferroelectrics (ISAF XIII), Japan 2002, 13th Proc. IEEE, 133-136, (2002)

P. PERNOT-REJMANKOVA, P. A. THOMAS, P. CLOETENS & J. BARUCHEL, Use of Bragg-diffraction imaging with a coherent beam to determine the matching of ferroelectric domains, ESRF Highlights 2000, pp 79-80 Copyright ESRF 2001 (Invited Article)

P. A. THOMAS & S. P. COLLINS, Clear-cut Crystals, CLRC Daresbury Annual Report Research Highlight 2000-2001 pp 18-19, Copyright CLRC 2001 (Invited Article)

Q. JIANG, A. LOVEJOY, P. A. THOMAS, K. B. HUTTON & R. C. C. WARD, Ferroelectricity, Conductivity, Domain Structure & Poling Conditions of Rubidium Titanyl Phosphate, J. Phys. D: Appl. Phys. 33, 2831-2836 (2000)

P. REJMANKOVA-PERNOT, P. A. THOMAS, P. CLOETENS, F. LORUT, J. BARUCHEL, Z. W. HU, P. URENSKI & G. ROSENMAN, Periodically-poled KTA Crystal Investigated using Coherent X-ray Beams, J. Appl. Cryst. 33, 1149 (2000)

J. KREISEL, A. M. GLAZER, G. JONES, P. A. THOMAS, L. ABELLO & G. LUCAZEAU, An X-ray Diffraction and Raman Spectroscopy Investigation of A-site Substituted Perovskite Compounds: the (Na1-xKx)0.5Bi0.5TiO3 (0 < x < 1) Solid Solution, J. Phys: Cond. Matt. 12, 3267-3280 (2000)

G. O. JONES & P. A. THOMAS, The Tetragonal Phase of Na0.5Bi0.5TiO3 – a new variant of the Perovskite Structure, Acta Cryst. B (Structural Science) 56, 426-430 (2000)

P. A. THOMAS, "Real Lives" Graduate Careers Profile, New Scientist, 28th October 2000, No. 2262, Graduate Careers Special pp 6-7

P. A. THOMAS, Q. JIANG, T. LATHAM, K. B. HUTTON & R. C. C. WARD, Post-growth Processing of Ferroelectric Crystals for Nonlinear Optical Devices: Fabrication and Characterisation, Ferroelectrics 2000 UK (Ed. N. McAlford & E. Yeatman), Inst. of Materials Communications Series Number 749, Pub. IOM Communications Ltd , London (2000), pp 181-188

J. ZHU, S. K. SINGH, P. A. THOMAS & S. B. PALMER, Properties of Strontium Barium Niobate Thin Films Produced by Pulsed Laser Deposition, Crystal Research and Technology 34(9), 1205-1211 (1999)

K. B. HUTTON, R. C. C. WARD, C. RAE, M. H. DUNN, P. A. THOMAS & C. EATON, The Growth and Characterisation of Tantalum and Niobium Doped KTP, Proceedings of the Society of Photo-instrumentation Engineers, from SPIE International Symposium on Nonlinear Materials, Devices & Applications, January 2000, San Jose, USA.

M. DRAKOPOULOS, Z. W. HU, S.KUZNETSOV, A. SNIGIREV, I. SNIGIREVA & P. A. THOMAS, Quantitative X-ray Bragg Diffraction Topography of Periodically Domain-Inverted LiNbO3, J. Phys. D: Appl. Phys. 32(10A), 160-165 (1999)

Z. W. HU, P. A. THOMAS & W. P. RISK, Studies of Periodic Ferroelectric Domains in KTiOPO4 using High-Resolution X-ray Scattering and Diffraction Imaging, Phys. Rev. B. 59(22), 14259-14264 (1999)

G. ROSENMAN, A.SKLIAR, Y.FINDLING, A. ENGLANDER, P. A. THOMAS & Z. W. HU, Periodically Poled KTiOAsO4 Crystals for Optical Parametric Oscillation, J. Phys. D: Appl. Phys. 32(14), L49-L52 (1999)

J. ZHU, S. K. SINGH, P. A. THOMAS & S. B. PALMER, Crystalline Properties of Strontium Barium Niobate Thin Films Produced by Pulsed Laser Deposition, Phil. Mag. A. 79(11) 2869-2876 (1999)

Z. W. HU & P. A. THOMAS, Phase-contrast imaging and diffraction-space mapping of periodic inversion domains in LiNbO3 with advanced x-rays, Ferroelectrics 222(1-4), 455-466 (1999)

M. N. WOMERSLEY & P. A. THOMAS, An Investigation of the CsxRb1-xTiOAsO4 Series Part II: The Problems of Interpretation of Residual Electron Densities in a Polar Space Group, Acta Cryst. B. (Structural Science) 54, 645-651 (1998)

M. N. WOMERSLEY, P. A. THOMAS & D. L. CORKER, An Investigation of the CsxRb1-xTiOAsO4 Series Part I: Crystal Structure Analysis & Pseudosymmetry, Acta Cryst. B. (Structural Science) 54, 635-644 (1998)

Z. W. HU, P. A. THOMAS & W. P. RISK, Periodically Poled Cs-exchanged RbTiOAsO4 Optical Waveguides: High-resolution X-ray Diffraction, Scattering and Topography Study, Phys. Rev. B. 58(10), 6074-6080 (1998)

Z. W. HU, P. A. THOMAS, A. SNIGIREV, I. SNIGIREVA, A. SOUVOROV, P. SMITH, G. ROSS & S. J. TEAT, Phase Mapping of Periodically Domain-inverted LiNbO3 with Coherent X-rays, Nature 392, 690-693 (1998)

1988 - 1997

Z. W. HU, P. A. THOMAS & P. HUANG, High-resolution X-ray Diffraction and Topographic Study of Ferroelectric Domains and Absolute Structural Polarity of KTiOPO4 via Anomalous Scattering, Phys. Rev. B. 56(14), 8559-8565 (1997)

P. A. THOMAS & Z. W. HU, Characterisation of periodically domain-inverted (PDI) crystals, XPertline XRD Application Note (world-wide sales publication), Philips Analytical X-ray (1997) (Invited article)

Z. W. HU, P. A. THOMAS & W. P. RISK, Periodic domain-inversion in poled KTiOPO4 via high-resolution x-ray topography and diffraction-space mapping, J. Phys. D: Appl. Phys. 29, 2696-2704 (1996)

M. N. WOMERSLEY & P. A. THOMAS, A New Kosters Prism Interferometer for Simultaneous Determination of Refractive Index and Thermal Expansion of Crystals as a Function of Temperature, J. Appl. Cryst. 29, 574-583 (1996)

Z. W. HU, P. A. THOMAS & J. WEBJORN, Observation of Periodic Domain Inversion in Periodically Poled LiNbO3 by High-Resolution Topography, J. Appl. Cryst. 29, 279-284 (1996)

Z. W. HU, P. A. THOMAS, J. WEBJORN & G. M. LOIACONO, Domain inversion in RbTiOAsO4 using electric field poling, J. Phys. D: Appl. Phys. 29, 1681-1684 (1996)

H. ÅHLFELDT, J. WEBJORN, P. A. THOMAS & S. J. TEAT, Structural and Optical Properties of Annealed Proton-exchanged Waveguides in z-cut LiTaO3, J. Appl. Phys. 77(9), 4467-4476 (1995)

S. C. MAYO, P. A. THOMAS, S. J. TEAT, G. M. LOIACONO & D. N. LOIACONO, Structure and nonlinear optical properties of KTiOAsO4, Acta Cryst. B. 50, 655-662 (1994)

Z. W. HU, P. A. THOMAS, M. C. GUPTA & W. P. RISK, Multiple-crystal X-ray Topographic Characterisation of a Periodically Domain-inverted KTiOPO4 Crystal, Appl. Phys. Lett. 66(1), 13-15 (1995)

Z. W. HU, P. A. THOMAS & J. WEBJORN, High resolution x-ray topographic study of periodically domain-inverted nonlinear optical crystals, J. Phys. D: Appl. Phys. 28, A189-194 (1995)

P. A. THOMAS, R. DUHLEV & S. J. TEAT, A Comparative Structural Study of a Flux-Grown Crystal of K0.86Rb0.14TiOPO4 and an ion-exchanged crystal of K0.84Rb0.16TiOPO4, Acta Cryst. B. 50, 538-543 (1994)

M. HAMICHI, C. S. G. COUSINS, R. E. MEADS, B. J. SHELDON, S. J. TEAT & P. A. THOMAS, Structural response of KTiOPO4 to electric fields: effects due to low-frequency modulation, J. Appl. Phys. 76(1), 188-193 (1994)

A. K. BHATTACHARYA, K. K. MALLICK, P. A. THOMAS, Low-temperature synthesis of a bismuth vanadium oxide isomorphous with gamma-Bi4V2O11, Solid-state Comm. 91(5) 357-360 (1994)

R. DUHLEV, C. W. PITT, P. A. THOMAS, A. G. JAMES & G. W. GRIME, Studies of Rb ion-exchanged KTiOPO4 waveguides by x-ray diffraction, SIMS, electron and proton microprobe analysis and comparison with optical refractive index profiles, Physical Concepts and Materials for Novel Optoelectronic Device Applications II, F. Beltram & E. Gornik, Editors, Proc. SPIE 1985, part II (1993)

P. A. THOMAS, Two materials are better than one, Physics World 6(3), 31-32 (1993) (Invited Article)

P. A. THOMAS, S. C. MAYO & B. E. WATTS, The crystal structures of RbTiOAsO4, KTiOP0.58As0.42O4, RbTiOPO4 and Rb0.465K0.535TiOPO4 and the analysis of pseudo-symmetry in crystals of the KTiOPO4 family, Acta Cryst. B. 48, 401-407 (1992)

L. ZHANG, P. J. CHANDLER, P. D. TOWNSEND & P. A. THOMAS, Helium ion implanted optical waveguide in KTiOPO4, Electronics Letters 28(7), 650-652 (1992)

D. R. ALLAN, J. S. LOVEDAY, R. J. NELMES & P. A. THOMAS, A high-pressure structural study of potassium titanyl phosphate (KTP) up to 5GPa, J. Phys. C. 4, 2747-2760 (1992)

P. A. THOMAS & A. M. GLAZER, KTiOPO4 Part II; Structural interpretation of twinning, ion-exchange and domain-inversion, J. Appl. Cryst. 24, 968-971 (1991)

P. A. THOMAS, I. J. TEBBUTT & A. M. GLAZER, KTiOPO4 Part I; Experimental investigation of optical gyration, absolute optical chirality and twinning, J. Appl. Cryst. 24, 963-967 (1991)

K. GODFREY, P. A. THOMAS & B. E. WATTS, Crystal growth and nonlinear optical properties of crystals of the KTiOPO4 family, Materials Science and Engineering B9, 479-483 (1991)

G. BLASSE, G. J. DIRKSEN, L. H. BRIXNER, A. FERRETI & P. A. THOMAS, Luminescence in the KTiOPO4 structure field: KTiOAsO4 and KSnOPO4, Materials Chem. and Phys. 27, 279-285 (1991)

D. R. ALLAN, J. S. LOVEDAY, R. J. NELMES & P. A. THOMAS, Structural studies of potassium titanyl phosphate (KTP) under high pressure, Ferroelectrics 124, 367-372 (1991)

P. A. THOMAS, Inorganic nonlinear materials, Physics World 3(3), 34-38 (1990) (Invited Article)

P. A. THOMAS, B. E. WATTS & A. M. GLAZER, The Crystal Structure & Nonlinear Optical Properties of KTiOPO4 and its structural analogue KSnOPO4, Acta Cryst. B. 46, 333-343 (1990)

P. A. THOMAS & B.E.WATTS, An Nb-doped analogue of KTiOPO4: Structural and Nonlinear Optical Properties, Solid State Comm. 73(2), 97-100 (1990)

K. Z. BABA-KISHI, R. A. CAMPS & P. A. THOMAS, Transmission electron microscope studies of the crystal structure of Y2Cu2O5, J. Phys. C. 2, 5085-5095 (1990)

P. A. THOMAS & E. GOMES, Crystal structure and absolute chirality of barium nitrite monohydrate Ba(NO2)2.H2O, Acta Cryst. B. 45(4), 348-351 (1989)

P. GROVES & P. A. THOMAS, Field-enforced behaviour in 8.2/70/30 PLZT, Ferroelectrics 89, 179-192 (1989)

P. A. THOMAS, From atomic positions to nonlinear optical properties in materials of the KTiOPO4 family of second-harmonic generators, Inst. Phys. Conf. Ser. No. 103: Part 1, 59-64 (Cambridge 1989)

P. A. THOMAS, The crystal structure and absolute optical chirality of paratellurite, TeO2, J. Phys. C 21, 4611-4627 (1988)

C. K. CHEN, B. E. WATTS, B. M. WANKLYN & P. A. THOMAS, The flux growth of crystals of (La,Sr)2CuO4 and (La,Sr)CuO3, Solid State Comm. 66(6), 611-612 (1988)

C. K. CHEN, B. E. WATTS, B. M. WANKLYN, P. A. THOMAS & P. HAYCOCK, Phase diagram and single crystal growth of (La,Sr)2CuO4 from CuO solution, J. Cryst. Growth 91, 659-665 (1988)



XTOP (International Meeting on High-resolution X-ray Diffraction and Imaging) 2004, Prague

S. JOLLANDS, P. A. THOMAS, R. W. WHATMORE, J. M. MARSHALL, X-ray Characterisation of PbZr0.53Ti0.47O3 Sol-Gel Thin Films grown on Al2O3 Substrates, Poster Presentation at XTOP (International Meeting on High-resolution X-ray Diffraction and Imaging), September 2004, Prague, Czech Republic

D. WALKER, P. A. THOMAS, Q. JIANG, P. PERNOT, J. BARUCHEL, T. AYGUAVIVES, X-ray Imaging Investigation of Periodically-electroded Rubidium Titanyl Arsenate, RbTiOAsO4, under an Applied Electric Field, Poster Presentation at XTOP (International Meeting on High-resolution X-ray Diffraction and Imaging), September 2004, Prague, Czech Republic

EMF (The 10th European Meeting on Ferroelectricity) 2003, Cambridge

P. A. THOMAS, Q. JIANG, D. WALKER, S. M. WEBER, P. PERNOT & J. BARUCHEL, X-ray Imaging Studies of Domain Dynamics in Ferroelectrics by in-situ Electric Field Poling Studies, Invited Talk by P. A. Thomas

A. BALDWIN, R. DUPREE & P. A. THOMAS, An NMR Investigation of Lanthanum and Zirconium Substitution into Lead Titanate Ceramics, Contributed Talk given by P. A. Thomas

P. BHATTACHARYA, M. E. SMITH, S.K.SINGH & P. A. THOMAS, A study of the Local Order Structure of PMN-PT using Solid State NMR Techniques, Contributed Talk by P. Bhattacharya

Q. JIANG, P. A. THOMAS, V. SHUVAEVA & A. M. GLAZER, Investigation of Crystal Growth, Structure and Properties of Na0.5Bi0.5TiO3-xBaTiO3 Crystals near the Morphotropic Phase Boundary, Contributed Talk by Q. Jiang

J. KREISEL, P. BOUVIER, B. DKHIL, B. CHAABANE, A. M. GLAZER, P. A. THOMAS & R. WELBERRY, Effect of High Pressure on Relaxor Ferroelectrics, Contributed Talk by J. Kreisel

V. A. SHUVAEVA, A. M. GLAZER, Q. JIANG & P. A. THOMAS, Optical Study of the Phase Transitions in (KxNa1-x)0.5Bi0.5TiO3, Contributed Talk by V. Shuvaeva

S. K. SINGH, P. A. THOMAS & S. B. PALMER, Microscopic Investigation of Nanoscale Polar Regions of Pb(Mg1/3Nb2/3)O3-PbTiO3 Relaxor Ferroelectric Thin Films, Contributed Talk by S. Singh

D. WALKER, P. A. THOMAS, Q. JIANG, S. M. WEBER, P. PERNOT & J. BARUCHEL, In-situ X-ray Imaging of Periodically Poled RbTiOAsO4, Contributed Talk given by D. Walker

V. BERMUDEZ, Q. JIANG, D. WALKER, P. A. THOMAS & E. DIEGUEZ, Investigation and Removal of the Polarisation and Backswitching of Li-rich LiNbO3 Crystals, Poster presentation

V. A.SHUVAEVA, D. ZEKRIA, A. M. GLAZER, Q. JIANG, P. BHATTACHARYA & P. A. THOMAS, The Local Structure of the Relaxor Solid Solutions, Poster Presentation


21st European Crystallographic Meeting 2003, Durban, South-Africa

A. BALDWIN, P. BHATTACHARYA, P. A. THOMAS, R. DUPREE & M. E. SMITH, Local Stucture of Lead-based Ferroelectrics, Invited Talk by P. A. Thomas

J. KREISEL, P. BOUVIER, B. DKHIL, B. CHAABANE,P. THOMAS, A. M. GLAZER & T. R. WELBERRY, The Effect of High-pressure on Relaxor Ferroelectrics: an X-ray Scattering Investigation, Invited Talk by J. Kreisel


Congress XIX of the International Union of Crystallography 2002, Geneva

P. A. THOMAS, Periodic Ferroelectric Inversion Domains investigated by Coherent-beam X-ray Diffraction and Imaging, Invited talk

J. KREISEL, P. BOUVIER, A.M. GLAZER, P.A. THOMAS, Phase transitions in perovskite-type relaxor ferroelectrics, Contributed talk by J. Kreisel, Acta Cryst. A58 (Supplement), 2002, p. 249.


International Meeting on Ferroelectrics, Madrid 2001

V. JENNINGS & P. A. THOMAS, Computational Investigations of Structures and Phase Transitions in NBT, Poster Presentation

G. O. JONES, J. KREISEL, V. JENNINGS, M. A. GEDAY, P. A. THOMAS & A. M. GLAZER, Investigation of a Peculiar Relaxor Ferroelectric: Na0.5Bi0.5TiO3, Poster Presentation


European Crystallography Meeting, Krakow, August 2001

P. A. THOMAS, Crystal Structures and Phase Transitions of Na0.5Bi0.5TiO3, Invited talk in Microsymposium on Perovskites

T. S. LYFORD, P. A. THOMAS & S. P. COLLINS, Periodically-poled Crystals Investigated using Bragg-Fresnel Imaging and High-Resolution Diffraction, Poster Presentation


European Crystallography Meeting, Nancy, August 2000

G. O. JONES & P. A. THOMAS, Investigation of the structures and phase transitions of the novel A-site substituted perovskite compound Na0.5Bi0.5TiO3, Poster Presentation Ref. o.m2. p11

V. JENNINGS & P. A. THOMAS, Computational Simulations of Novel A-site Substituted Perovskites, Oral Presentation (given by V. Jennings) Ref o.m1.o5

K. SCHWARZ, P. BLAHA, P. DELARUE, C. LECOMTE, V. JENNINGS & P. A. THOMAS, DFT calculations on KTiOPO4 (KTP) used in nonlinear optics, Invited Oral Presentation by K. Schwarz Ref. s2.m1.o1

T. S. LYFORD, P. A. THOMAS, S. P. COLLINS & D. LAUNDY, Satellite Reflections from lateral heterostructures of inversion domains in LiNbO3, KTiOPO4 and KTiOAsO4, Poster Presentation Ref. o.m1.p9

P. A. THOMAS, T. S. LYFORD, P. REJMANKOVA-PERNOT, F. LORUT & J. BARUCHEL, An Investigation of Polar Twinning in KTiOPO4 and KTiOAsO4, Poster Presentation Ref. o.m4.p3


Congress XVIII of the International Union of Crystallography Glasgow 1999

G. O. JONES & P. A. THOMAS, Phase Transitions in the Ferroelectric Crystal Na0.5Bi0.5TiO3, Poster Presentation P.11.10.027 published as a supplement to Acta Cryst. A55 (1999)

V. JENNINGS & P. A. THOMAS, Computational Simulations of Novel A-site Substituted Perovskites, Poster Presentation P.11.10.026 published as a supplement to Acta Cryst. A55 (1999)


European Ferroelectrics Meeting Prague 1999

P. A. THOMAS & T. J. LATHAM, Dielectric Studies of Doped Derivatives of the KTiOPO4 Family, Poster Presentation by Tina Latham

V. JENNINGS & P. A. THOMAS, Computational Simulations of Novel A-site Substituted Perovskites, Poster Presentation by Vincent Jennings

G. O. JONES & P. A. THOMAS, Phase Transitions in the Ferroelectric Crystal Na0.5Bi0.5TiO3, Poster Presentation by Glyn Jones


European Crystallographic Meeting Prague 1998

P. A. THOMAS & T. J. LATHAM, Structural and Optical Studies of KRbTiOAsO4, P3.10-5 Poster presentation, published in Zeitschrift fur Kristallographie

C. J. EATON, P. A. THOMAS, K.B.HUTTON & R.C.C.WARD, A Study of the Structural Features of Niobium and Tantalum-doped single crystals of KTiOPO4, P3.10-2 Poster presentation published in Zeitschrift fur Kristallographie

Z. W. HU, P. A. THOMAS, A. SNIGIREV, I. SNIGIREVA, A. SOUVOROV, P. SMITH & S. TEAT, Phase-contrast Imaging of Periodically Domain-inverted LiNbO3 with Coherent X-rays, MS4.8-5 Oral presentation published in Zeitschrift fur Kristallographie


Congress XVII of the International Union of Crystallography, Seattle, USA 1996

Abstracts published as a supplement to Acta Cryst A52

P. A. THOMAS, Periodically domain-inverted crystals, designer optical materials: Invited lecture MS10.07.02.

C. J. EATON, P. A. THOMAS, K. HUTTON & R. C. C.WARD, Comparative investigations of Nb and Ta doped KTiOPO4 materials by high-resolution X-ray diffraction, Poster Presentation PS10.07.12

P. HUANG & P. A. THOMAS, Er3+ doped KTiOPO4 waveguides by ion-exchange, Poster Presentation PS10.07.13

M. N. WOMERSLEY & P. A. THOMAS, Thermooptic studies of structural phase transitions in crystals of the KTiOPO4 family, Poster Presentation PS11.05.51

Z. W. HU & P. A. THOMAS, An application of x-ray topography and diffraction: periodic inversion domains in nonlinear optical materials, Contributed oral presentation MS17.00.05 (by Dr. Z. W. Hu)

C. SCHETELICH & P. A. THOMAS, Calculation of the linear and nonlinear optical susceptibilities in KTP and MXO4 crystals, Poster Presentation PS10.07.19

Congress XVI of the International Union of Crystallography, Beijing China 1993

P. A. THOMAS, Structure-property relationships in inorganic crystals, Invited Lecture in Microsymposium on Structure Property Relationships published in Acta Cryst A49 Supplement 247, C1-C515 (1993)


European Crystallographic Meeting, Enschede, The Netherlands 1992

S. C. MAYO, P. A. THOMAS & G. M. LOIACONO, The crystal structures and twinning of tungstate-flux-grown KTiOAsO4 and K0.95Tl0.05TiOAsO4, Z. Krist. Supplement 189, 434 (1992)

P. A. THOMAS, R. DUHLEV, S. J. TEAT & A. M. GLAZER, Investigation of the structural and optical properties of rubidium ion-exchanged waveguides in KTiOPO4 and their comparison with crystals of the RbxK1-xTiOPO4 series, Z. Krist. Supplement 189, 440 (1992)


Congress XV of the International Union of Crystallography, Bordeaux 1990

P. A. THOMAS, A. M. GLAZER, S. MAYO & A. FITZMAURICE, An investigation of structure-property relationships in crystals of the KTiOPO4 family, Acta Cryst. A46 Supplement, C-365 (1990)


European Crystallography Meeting, Vienna, 1988

P. A. THOMAS & E. GOMES, Optical Activity in barium nitrite monohydrate, Ba(NO2)2.H2O and paratellurite, TeO2, Z. Krist. 185, 642 (1988)


Congress XIV of the International Union of Crystallography, Perth 1987

A. M. GLAZER, M. KORALEWSKI, K. M. STADNICKA & P. A. THOMAS, Optical Activity in Crystals, Acta Cryst. A43 Supplement, 155 (1987)


Congress XIII of the International Union of Crystallography, Hamburg 1984

A. M. GLAZER, J. R. L. MOXON, K. M. STADNICKA & P. A. THOMAS, On the correlation between structure and optical activity of crystals, Acta Cryst A40 Supplement (1984)


Other Output in the Scientific Literature 

P. A. THOMAS, S. J. TEAT, C. S. G. COUSINS, S. C. MAYO, B. SHELDON & R. DUHLEV, Anomalous scattering studies of ion-exchanged waveguides in KTiOPO4 and the related arsenate crystals, Synchrotron Radiation, Appendix to the Daresbury Annual Report 1992/93, 69.

C. S. G. COUSINS, M. HAMICHI, R. E. MEADS, B. J. SHELDON & P. A. THOMAS, Electric field modulation of single crystals studied by energy-dispersive x-ray spectroscopy, Synchrotron Radiation, Appendix to the Daresbury Annual Report 1992/93, 67.

R. C. C. WARD, K. B. HUTTON, K. W. GODFREY & P. A. THOMAS, An x-ray topographic study of crystalline perfection and polar twinning in single crystals of potassium titanyl phosphate, Synchrotron Radiation, Appendix to the Daresbury Annual Report 1992/93, 49.

P. A. THOMAS, S. J. TEAT, C. S. G. COUSINS, B. SHELDON, M. HAMICHI & S. C. MAYO, Structural studies of compositional isomorphs of the nonlinear optical crystal KTiOPO4 and rare-earth doped derivatives of LiNbO3, Synchrotron Radiation, Appendix to the Daresbury Annual Report 1993/1994, 156

R. C. C. WARD, K. B. HUTTON, K. W. GODFREY & P. A. THOMAS, An x-ray topographic study of polar twinning in crystals of potassium titanyl phosphate (KTP), Synchrotron Radiation, Appendix to the Daresbury Annual Report 1993/1994, 297

C. S. G.COUSINS, M. HAMICHI, R. E. MEADS, B. J. SHELDON & P. A. THOMAS, Electric field modulation of single crystals studied by differential energy-dispersive x-ray spectroscopy, Synchrotron Radiation, Appendix to the Daresbury Annual Report 1993/1994, 234.


Selected Recent Presentations at National Meetings (2000-2004)

S. K. SINGH, P. A. THOMAS & S. B. PALMER, Perovskite Phase Formation of PMN-PT Solid Solutions at Low Temperature, Poster Presentation at the 19th General Conference of the EPS Condensed Matter Division, Brighton 2002.

Q. JIANG, T. S. LYFORD& P. A. THOMAS, Fabrication of periodically-poled KTP isomorphs for non-linear frequency conversion: progress, problems and solution, Contributed Talk (given by Q. Jiang) at the 15th Quantum Electronics and Photonics Conference, Glasgow, 3-6 Sept. 2001.

T. S. LYFORD, P. THOMAS, S. COLLINS, D. LAUNDY, P. PERNOT, P. CLOETENS & J. BARUCHEL, Investigation of Lateral Heterostructures of Inversion Domains in LiNbO3, KTiOPO4 & KTiOAsO4, Poster Presentation at the British Crystallographic Association Spring Meeting, Nottingham 2002

D. WALKER, P. A. THOMAS, Q. JIANG& T. LYFORD, X-ray Imaging and Ferroelectric Switching Studies of High Potassium Doped KTiOPO4, Poster Presentation at the British Crystallographic Association Spring Meeting, Nottingham 2002

T. S. LYFORD, S. P. COLLINS & P. A. THOMAS, High-Resolution X-Ray Diffraction Studies of Lateral Heterostructures in Crystals, Invited Talk (given by Tom Lyford) at the CMMP Heterostructures Session, Bristol, December 2000

P. A. THOMAS, New Possibilities from X-Ray Scattering Experiments using Advanced X-ray Sources, Invited Talk at the CMMP Student Day, Bristol, 2000

P. A. THOMAS, High-resolution Diffraction Studies of Lateral Heterostructures, Invited Talk at the Daresbury Diffraction User Group Meeting November 2000

NEWS

21/07/2016

New insight into the self-organised domains in BaTiO3 single crystals. An X-ray topography experiment and Optical Birefringence study are published in Phys. Rev. B.

04/11/2014

Our latest PZT structural study, published in Nature Communications is highlighted at Phys.org. It provides the first experimental evidence for the missing phase boundary in PZT.

Older news

In collaboration with Oxford University a reproducible and low-cost method of modifying the optical properties of crystalline Lithium Tantalate enables highly accurate temperature readings, down to individual milli-kelvins, over a broad range of temperatures: -120°C to +680°C. More details here.

Selected images of optical birefringence recorded during heating of dodecasil-3C crystals from our collaboration with Richard Walton's group chosen to be the 2011 Journal of Applied Crystallography cover image.

JAC Cover image 2011

New insight into the structure of PZT published in Phys. Rev. Lett. using Neutron diffraction on single crystals which have been grown for the first time. More information can be found here.