Montana State University

Electro-Active Materials Laboratory

241 EPS Building
Montana State University
Bozeman, MT 59717

Tel: (406) 994-6150
Fax: (406) 994-4452

Department of Physics

Montana State University
P.O. Box 173840
Bozeman, MT 59717-3840

Tel: (406) 994-3614
Fax: (406) 994-4452
Location: EPS building, Room 264



Department Head:
Prof. Richard J. Smith
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Electro-Active Materials Publications


Solid Oxide Fuel Cell Publications

Temperature-dependent structures of proton-conducting Ba(Zr0.8-xCexY0.2)O2.9 ceramics by Raman scattering and x-ray diffraction, C.-S. Tu, R. R. Chien, S. C. Lee, and C.-C. Huang, J. Phys.: Condens. Matter 24, 155403 (6 pp.) (2012).

Protonic and electronic conduction in proton conductive solid oxide fuel cells, V. H. Schmidt and C.-L. Tsai, Invited Talk (given by Tsai), Proc. MRS Meeting, San Francisco, April 2011.

Fabrication, performance, and model for proton conductive solid oxide fuel cell, C.-L. Tsai and V. H. Schmidt, J. Electrochem. Soc. 158, B885-B898 (2011).

Tortuosity in anode-supported proton conductive solid oxide fuel cell found from current flow rates and dusty-gas model, C.-L. Tsai and V. H. Schmidt, J. Power Sources 196, 692-699 (2011).

Effect of lithium fluoride on thermal stability of proton-conducting Ba(Zr0.8-xCexY0.2)O2.9 ceramics, C.-S. Tu, C.-C. Huang, S. C. Lee, R. R. Chien, V. H. Schmidt, and C.-L. Tsai, Solid State Ionics 181, 1654-1658 (2010).

Low temperature sintering of Ba(Zr0.8-xCexY0.2)O3- using lithium fluoride additive, C.-L. Tsai, M. Kopczyk, R. J. Smith, and V. H. Schmidt, Solid State Ionics 181, 1053-1060 (2010).

Synthesis and characterization of nano-sized proton-conducting Ba(Zr0.8-xCexY0.2)O2.9 ceramics, R. R. Chien, C.-S. Tu, V. H. Schmidt, S.-C. Lee, and C.-C. Huang, Solid State Ionics 181, 1251-1257 (2010).

Phase diagram of proton-conducting Ba(Zr0.8-xCexY0.2)O2.9 ceramics by in situ micro-Raman scattering and x-ray diffraction, C.-S. Tu, C.-C. Huang, S.-C. Lee, R. R. Chien, V. H. Schmidt, and J. Liang, Advances in Solid Oxide Fuel Cells VI. Wiley, Hoboken, NJ, pp. 113-120 (2010).

Glycine-nitrate synthesis and characterization of Ba(Zr0.8-xCexY0.2)O2.9, R. R. Chien, V. H. Schmidt, S.-C. Lee, C.-C. Huang, and S. P. Tu, Advances in Solid Oxide Fuel Cells V. Wiley, Hoboken, NJ, pp. 239-248 (2009).

Thermal stability of Ba(Zr0.8-xCexY0.2)O2.9 ceramics in carbon dioxide, C.-S Tu, R. R. Chien, V. H. Schmidt, S.-C. Lee, C.-C. Huang, and C.-L. Tsai, J. Appl. Phys. 105, 103504 (7 pp.) (2009).

Laminar flow and total pressure effects in solid oxide fuel cell electrode pores and their effects on voltage-current characteristics, V. H. Schmidt, R. R. Chien, and L. M. Lediaev, Advances in Solid Oxide Fuel Cells V. Wiley, Hoboken, NJ, pp. 139-151 (2009).

Anode-Pore Tortuosity in Solid Oxide Fuel Cells Found from Gas and Current Flow Rates, V. Hugo Schmidt and Chih-Long Tsai, J. Power Sources 180, 253-264 (2008).

Dynamic first-principles molecular-scale model for solid oxide fuel cells, V. Hugo Schmidt, ECS Transactions, Vol 6, Is. 21, Design of Electrode Structures, 11-24 (2008).

In-Situ Temperature-Dependent X-ray Diffraction Study of Ba(Zr0.8-xCexY0.2)O3-δ Ceramics, C.-S. Tu, R. R. Chien, S.-C. Lee, C.-L. Tsai, V. H. Schmidt, A. Keith, S. A. Hall, and N. P. Santorsola, Proc. 32nd International Conference and Exposition on Advanced Ceramics and Composites, Daytona Beach, Florida, January 27-February 1, 2008.

Pressure and Gas Concentration Effects on Voltage vs. Current Charateristic of a Solid State Fuel Cell and Electrolyzer, V. Hugo Schmidt and Laura Lediaev, Proc. 32nd International Conference and Exposition on Advanced Ceramics and Composites, Daytona Beach, Florida, January 27-February 1, 2008.

Determination of anode-pore tortuosity from gas and current flow rates in SOFC's, V. Hugo Schmidt, Chih-Long Tsai, and Laura M. Lediaev, Advances in Solid Oxide Fuel Cells III: Ceramic Engineering and Science Proceedings, Vol. 28, Is. 4, 129-140 (2007).


Other Publications

2012

Photovoltaic phenomena in BiFeO3 multiferroic ceramics, C.-M. Hung, C-S. Tu, W. D. Yen. L. S. Jou, M.-D. Jiang, and V. H. Schmidt, J. Appl. Phys. 111, 07D912 (2012).

2011

Dielectric permittivity and magnetoelectric coupling in multiferroic BiFeO3 and (Bi0.95La0.05FeO3 ceramics, C.-S. Tu, Y. Ding, W.-C. Yang, T. H. Wang, R. R. Chien, V. H. Schmidt, Y. D. Yao, and K. T. Wu, IEEE Trans. on Magnetics 47, 3343-3346 (2011).

Origins of dielectric response and conductivity in (Bi1-xNdx)FeO3 multiferroic ceramics, C.-S. Tu, W.-C. Yang, V. H. Schmidt, and R. R. Chien, J. Appl. Phys. 110, 114114 (2011).

Magnetoelectric coupling and phase transition in BiFeO3 and (BiFeO3)0.95(BaTiO3)0.05 ceramics, T.-H. Wang, C.-S. Tu, H.-Y. Chen, Y. Ding, T. C. Lin, Y.-D. Yao, and V. H. Schmidt, J. Appl. Phys. 109, 044101 (2011).

2010

Field-induced phase transitions in relaxor ferroelectrics, V. H. Schmidt, R. R. Chien, and C.-S. Tu, Ferroelectrics 400, 402-409 (2010).

Poling effect and piezoelectric response in high-strain ferroelectric 0.70Pb(Mg1/3Nb2/3)O3- 0.30PbTiO3 crystal, H.-Y. Chen, C.-S. Tu, C.-M. Hung, R. R. Chien, V. H. Schmidt, C.-S. Ku, and H.-Y. Lee, Journal of Applied Physics 108, 044101/1-6 (2010).

Phase coexistence and Mn-doping effect of lead-free ferroelectric (Na1/2Bi1/2)TiO3 crystals, C.-S. Tu, S.-H. Huang, C.-S. Ku, H.-Y. Lee, R. R. Chien, V. H. Schmidt, and H. Luo, Applied Physics Letters 96, 062903/1-3 (2010).

Poling effect and piezoelectric response in high-strain ferroelectric 0.70Pb(Mg1/3Nb2/3)O3- 0.30PbTiO3 crystal, H.-Y. Chen, C.-S. Tu, C.-M. Hung, R. R. Chien, V. H. Schmidt, C.-S. Ku, and H.-Y. Lee, Journal of Applied Physics 108, 044101/1-6 (2010).

2008

Piezoelectric response and origin in Pb(Mg1/3Nb2/3)0.70Ti0.30O3 crystal, C.-S. Tu, C.-M. Hsieh, V. Hugo Schmidt, R. R. Chien, and H. Luo, Applied Physics Letters 93, 172905 (2008).

Field-induced intermediate orthorhombic phase in (110)-cut Pb(Mg1/3Nb2/3)0.70Ti0.30O3 single crystal, C.-S. Tu, V.H. Schmidt, R. R. Chien, S.-H. Tsai, S.-C. Lee, and H. Luo, Journal of Applied Physics 104, 094105 (2008).

Nanotwin and phase transformation in tetragonal Pb(Fe1/2Nb1/2)1-xTixO3 single crystal, C.-S. Tu, C.-T. Tseng, R. R. Chien, V. Hugo Schmidt, and C.-M. Hsieh, Journal of Applied Physics 104, 054106/1-4 (2008).

Intermediate phases in rhombohedral Pb(Mg1/3Nb2/3)1-xTixO3 crystal, C.-S. Tu, H.-T. Chuang, S.-C. Lee, R. R. Chien, V. H. Schmidt, and H. Luo, Journal of Applied Physics 104, 024110 (2008).

Nanotwins and phases in high-strain Pb(Mg1/3Nb2/3)1-xTixO3 crystal, C.-S. Tu, C.-M. Hsieh, R. R. Chien, V. H. Schmidt, F.-T. Wang, and W. S. Chang, Journal of Applied Physics 103, 074117/1-8 (2008).

Electric-field-induced domain structures and phase transitions in PMN-PT single crystals, V. H. Schmidt, R. R. Chien, and C.-S. Tu, PART 2 FIELD-INDUCED EFFECTS AND DOMAIN ENGINEERING, Handbook of Advanced Dielectric Piezoelectric and Ferroelectric Materials: Synthesis, Characterisation and Applications, edited by Z.-G. Ye, Woodhead Publishing Limited, Abington Hall, Abington, Cambridge, CB1 6AH, England, ISBN 1 84569 186 5, March 2008. [BOOK]

2007

Electric-field-induced dielectric, domain and optical phenomena in high-strain Pb(In1/2Nb1/2)1-xTixO3 (x=0.30) single crystal, C.-S. Tu, C.-M. Hung, R. R. Chien, V. H. Schmidt, and F.-T. Wang, Advances in Electronic Ceramics: Ceramic Engineering and Science Proceedings, Vol. 28, Is. 8, 49-56 (2007).

Electric-field- and temperature-induced phase transitions in high-strain relaxor-based ferroelectric Pb(Mg1/3Nb2/3)1-xTixO3 single crystals, R. R. Chien, V. Hugo Schmidt, C.-S. Tu, F.-T. Wang, I.-C. Shih, L.-W. Hung, and H. Luo, Ferroelectrics, 359, 99-110 (2007).

Phases and domain structures in tungsten-doped Pb(Mg1/3Nb2/3)1-xTixO3 (x=0.35) crystal, F.-T. Wang, C.-S. Tu, and R. R. Chien, Journal of Applied Physics, 101, 114107 (2007).

Field-induced orientational percolation to a ferroelectric phase in relaxor Pb(In1/2Nb1/2)1-xTixO3, C.-S. Tu, R. R. Chien, C.-M. Hung, V. Hugo Schmidt, F.-T. Wang, and C.-T. Tseng, Physical Review B, 75, 212101/1-4 (2007).

2006

Dielectric, domain, and optical studies in high-Curie-temperature Pb(In1/2Nb1/2)1-xTixO3 (x=0.40) single crystal, C.-S. Tu, F.-T. Wang, C.-M. Hung, R. R. Chien, and H. Luo, Journal of Applied Physics, 100, 104104/1-5 (2006).

Electric-induced dielectric anomalies and optical birefringence in Pb(Zn1/3Nb2/3)1-xTixO3, Chi-Shun Tu, F.-T. Wang, R. R. Chien, V. H. Schmidt, and L. C. Lim, Journal of Applied Physics, 100, 074105/1-6 (2006).

Electric-field- and temperature-induced phase transitions in high-strain ferroelectric Pb(Mg1/3Nb2/3)0.67Ti0.33O3 single crystal, R. R. Chien, C.-S. Tu, V. H. Schmidt, and F.-T. Wang, Journal of Physics: Condensed Matter, 18, 8337-8344 (2006).

Direct observation of ferroelectric domains and phases in (001)-cut Pb(Mg1/3Nb2/3)1-xTixO3 single crystals under electric-field poling, R. R. Chien, V. Hugo Schmidt, C.-S. Tu, and F.-T. Wang, Journal of Crystal Growth, 292, 395-398 (2006).

Poling effects of dielectric and optical properties in Pb(Zn1/3Nb2/3)1-xTixO3 crystal, C.-S. Tu, F.-T. Wang, R. R. Chien, V. H. Schmidt, and L. C. Lim, Journal of Rare Earths, 24, 166-168 (2006).

Electric-field poling effect on thermal stability of monoclinic phase in Pb(Mg1/3Nb2/3)0.74Ti0.26O3 single crystal, R. R. Chien, V. H. Schmidt, and C.-S. Tu, Journal of Crystal Growth, 287, 454-457 (2006).

Dielectric and optical behaviors in relaxor ferroelectric Pb(In1/2Nb1/2)1-xTixO3 crystal, C.-S. Tu, C.-M. Hung, F.-T. Wang, R.R. Chien, S.-W. Yang, and V.H. Schmidt, Solid State Communications 138, 190-193 (2006).

Dielectric and photovoltaic phenomena in tungsten doped Pb(Mg1/3Nb2/3)1-xTixO3 crystal, Chi-Shun Tu, F.-T. Wang, R.R. Chien, V.H. Schmidt, T.-M. Hung, and C.-T. Tseng, Applied Physics Letters 88, 032902 (2006) (3 pages).

2005

Prior poling effect on thermal phase stability in (110)-cut Pb(Mg1/3Nb2/3)0.74Ti0.26O3 single crystal, R.R. Chien, V.H. Schmidt, C.-S. Tu, and F.-T. Wang, J. Appl. Phys. 98, 114106 (2005) (5 pages).

Dielectric/piezoelectric resonance in high-strain Pb(Mg1/3Nb2/3)1-xTixO3 crystals, C.-S. Tu, R. R. Chien, V. H. Schmidt, F.-T. Wang, W.-T. Hsu, C.-T. Tseng, and C. C. Shih, J. Appl. Phys. 97, 126105 (2005) (3 pages).

Electric-Field Effects of Dielectric and Optical Properties in Pb(Mg1/3Nb2/3)0.65Ti0.35O3 Crystal, C.-S. Tu, F.-T. Wang, R.R. Chien, V.H. Schmidt, and G.F. Tuthill, J. Appl. Phys., 97, 064112 (2005) (5 pages).

Temperature- and Electric-Field-Dependent Domain Structures and Phase Transformations in (001)-cut Tetragonal Pb(Mg1/3Nb2/3)1-xTixO3 (x=0.4) Single Crystal, R.R. Chien, V.H. Schmidt, L.-W. Hung, and C.-S. Tu, J. Appl. Phys., 114112 (2005) (4 pages).

2004

Damping and Electromechanical Energy Losses in the Piezoelectric Polymer PVDF, A.M. Vinogradov, V.H. Schmidt, G.F. Tuthill, and G.W. Bohannan, Mechanics of Materials 36, 1007-1016 (2004).

Elastic, Piezoelectric, and Dielectric Properties of 0.58Pb(Mg1/3Nb2/3)O3-0.42PbTiO3 Single Crystal, H. Cao, V.H. Schmidt, R. Zhang, W. Cao, and H. Luo, J. Appl. Phys. 96, 549-554 (2004).

Field-Induced Polarization Rotation in (001)-cut Pb(Mg1/3Nb2/3)0.76Ti0.24O3, R.R. Chien, V.H. Schmidt, C.-S. Tu, L.-W. Hung, and H. Luo, Phys. Rev. B 69, 172101 (2004) (4 pages).

Paraelectric-Antiferroelectric Phase Coexistance in the Deuteron Glass Rb0.5(ND4)0.5D2AsO4, S. Lanceros-Mendez, V.H. Schmidt, and S.A. Shapiro, Ferroelectrics 300, 117-120 (2004).

Phase Coexistence of Temperature-Dependent Phase Transformation in Relaxor Ferroelectric Pb(Mg1/3Nb2/3)1-xTixO3 Single Crystal, R. Chien, V.H. Schmidt, C.-S. Tu, and L.-W. Hung, Ferroelectrics 302, 581-585 (2004).

Phase Stability After an Electric-Field Poling in Pb(Mg1/3Nb2/3)1-xTixO3 Crystals, C.-S. Tu, R.R. Chien, F.-T. Wang, V.H. Schmidt, and P. Han, Phys. Rev. B 70, 220103(R) (2004) (4 pages).

Temperature- and Electric-Field-Dependent Phase Transformations in (001)-Oriented Pb(Mg1/3Nb2/3)0.6Ti0.4O3 Single Crystal, R.R. Chien, V.H. Schmidt, C.-S. Tu, and L.-W. Hung, 2004 IEEE Proc. (2004).

Temperature- and Electric-Field-Dependent Polarization Rotations in (211)-cut Pb(Mg1/3Nb2/3)0.69Ti0.31O3 (PMNT31%) Single Crystal, C.-S. Tu, L.-W. Hung, R.R. Chien, and V. H. Schmidt, J. Appl. Phys. 96, 4411-4415 (2004).

2003

E-Field-Induced Polarization Rotation in Pb(Mg1/3Nb2/3)1-xTixO3 Crystal, C.-S. Tu, I.-C. Shih, V.H. Schmidt, and R.R. Chien, Appl. Phys. Lett. 83, 1833-1835 (2003).

Polarization Rotation and Monoclinic Phase in Relaxor Ferroelectric PMN-PT Crystal, V.H. Schmidt, R. Chien, I.-C. Shih, and C.-S. Tu, AIP Conf. Proc. 677, 160-167 (2003).

E-field and Temperature Dependent Transformation in <102>-cut PMN-PT Crystal, C.-S. Tu, L.-W. Hung, R. Chien, and V.H. Schmidt, AIP Conf. Proc. 677, 152-159 (2003).

Phase Transformation via a Monoclinic Phase in Relaxor-Based Ferroelectric Crystal (PbMg1/3Nb2/3O3)1-x(PbTiO3)x, C.-S. Tu, V.H. Schmidt, I.-C. Shih, and R. Chien, Phys. Rev. B 67, 020102(R) (2003) (4 pages).

2002

Dielectric Behavior in an Oriented Beta-PVDF Film and Chain Reorientation Upon Transverse Mechanical Deformation, S. Lanceros-Mendez, M.V. Moreira, J.F. Mano, V.H. Schmidt, and G. Bohannan, Ferroelectrics 273, 15-20 (2002).

Fractal Model for Dielectric Relaxation in Deuteron Pseudospin Glass DRADP, V.H. Schmidt and D. Arbogast, AIP Conf. Proc. 626, 81-88 (2002).

Orientation Dependence and Electric-Field Effect in the Relaxor-Based Ferroelectric Crystal (PbMg1/3Nb2/3O3)0.68(PbTiO3)0.32, C.-S. Tu, C.-L. Tsai, J.-S. Chen, and V.H. Schmidt, Phys. Rev. B 65, 104113 (2002) (11 pages).

Phase Diagram and Dielectric Properties of Mixed Cs1-x(NH4)xH2PO4 Crystals, A.I. Baranov, V.V. Dolbinina, S. Lanceros-Mendez, and V.H. Schmidt, Ferroelectrics 272, 225-230 (2002).

2001

Acoustic Anomalies at Phase Transformation to Quasi-2D Proton Glass State in Cs5H3(SO4)4 × xH2O Crystal, S.N. Gvasaliya, A.I. Fedoseev, S.G. Lushnikov, V.H. Schmidt, G.F. Tuthill, and L.A. Shuvalov, J. Phys. - Cond. Matt. 13, 3677-3688 (2001).

Bound Charge Diffusion and Polar Nanocluster Dynamics in Proton Glass Crystals, V.H. Schmidt, AIP Conf. Proc. 582, 165-174 (2001).

Dielectric, Hypersonic, and Domain Anomalies of (PbMg1/3Nb2/3O3)1-x(PbTiO3)x Single Crystals, C.-S. Tu, C.L. Tsai, V.H. Schmidt, H. Luo and Z. Yin, J. Appl. Phys. 89, 7908-7916 (2001).

Dielectric Properties and Phase Transitions of [Pb(Zn1/3Nb2/3)O3]0.905(PbTiO3)0.095: Influence of Pressure, G.A. Samara, E.L. Venturini, and V.H. Schmidt, Phys. Rev. B 63, 184104 (2001) (11 pages).

Evidence for a Quasi-Two-Dimensional Proton Glass State in Cs5H3(SO4)4·xH2O Crystals, S.G. Lushnikov, S.N. Gvasaliya, A.I. Fedoseev, V.H. Schmidt, G.F. Tuthill, and L.A. Shuvalov, Phys. Rev. Lett. 86, 2838-2841 (2001).

FTIR and DSC Studies of Mechanically Deformed Beta-PVDF Films, S. Lanceros-Mendez, J.F. Mano, A.M. Costa, and V.H. Schmidt, J. of Macromolcular Sci.-Phys. B 40, 517-527 (2001).

Light Scattering from (K0.5Na0.5)0.2(Sr0.75Ba0.25)0.9Nb2O6 with the Tungsten Bronze Struture: An Analogy with Relaxor Ferroelectrics, I.G. Siny, S.G. Lushnikov, S.I. Siny, V.H. Schmidt, A.A. Savvinov, and R.S. Katiyar, J. Appl. Phys. 89, 1671-1678 (2001).

Phases and Domain Structures in Relaxor-Based Ferroelectric (PbMg1/3Nb2/3O3)0.69(PbTiO3)0.31 Single Crystal, C.-S. Tu, L.-F. Chen, V.H. Schmidt, and C.-L. Tsai, Jpn. J. Appl. Phys. 40, 4118-4125 (2001).

Phases in Relaxor Ferroelectric Crystals, V.H. Schmidt, C.-S. Tu, and B.-C. Cheng, IEEE Publ. 0-7803-5940-2/01, 283-286 (2001).

Phase Transitions and Domain Structures in Relaxor-Based Ferroelectric (PbZn1/3Nb2/3O3)0.915(PbTiO3)0.085 Single Crystal, C.-S. Tu, V.H. Schmidt, and I.C. Shih, Ferroelectric Lett. 28, 115-121 (2001).

2000

Brillouin Light Scattering Anomalies and New Phase Transition in Cs5H3(SO4)4 Crystals, S.G. Lushnikov, V.H. Schmidt, L.A. Shuvalov, and V.V. Dolbinina, Solid State Comm. 113, 639-642 (2000).

Brillouin and Raman Spectra Anomalies in KNSBN with the Tungsten Bronze Structure, I.G. Siny, S.G. Lushnikov, S.I. Siny, V.H. Schmidt, A.A. Savvinov, and R.S. Katiyar, Integrated Ferroelectrics 28, 95-102 (2000).

Brillouin Scattering in Relaxor Ferroelectric Crystal, C.-S. Tu, H. Luo, C.-H. Yeh, V. H. Schmidt and C.-L. Tsai, Proc. of the XVIIth International Conference on Raman Spectroscopy, 396-397 (2000).

Dielectric and Relaxation Behaviors of (PbMg1/3Nb2/3O3)0.67(PbTiO3)0.33 Single Crystal, C.-S. Tu, V.H. Schmidt, H. Luo, and F.-C. Chao, Ferroelectrics Lett. 27, 49-57 (2000).

Domain Wall Freezing in KDP-Type Ferroelectrics, V.H. Schmidt, G. Bohannan, D. Arbogast, G. Tuthill, J. Phys. Chem. Solids 61, 283-289 (2000).

Hypersonic and Dielectric Studies of Relaxor Ferroelectric Single Crystal, C-S. Tu, V.H. Schmidt, C.-H. Yeh, F.-C. Chao and C.-L. Tsai, Symposium Proc. of Material Research Society 604,185-190 (2000).

Light Scattering and Dielectric Measurements in (PbMg1/3Nb2/3O3)0.67(PbTiO3)0.33 Single Crystal, V.H. Schmidt, C.-S. Tu, C.-H. Yeh, H. Luo, and F.-C. Chao, AIP Conf. Proc. 535, 240 (2000).

Piezoelectric Polymer Actuators in a Vibration Isolation Application, G.W. Bohannan, V.H. Schmidt, R.J. Conant, J. Hallenberg, C. Nelson, A. Childs, C. Lukes, J. Ballensky, J. Wehri, B. Tikalsky, and E. McKenzie, Proc. SPIE Int. Soc. Opt. Eng. 3987, 331 (2000).

Pressure-Induced Crossover from Long-to Short-Range Order in [Pb(Zn1/3Nb2/3)O3]0.905(PbTiO3)0.095 Single Crystal, G.A. Samara, E.L. Venturini, and V.H. Schmidt, Appl. Phys. Lett. 76, 1327-1329 (2000).

Temperature Dependence of the Generalized Vibrational Density of States of Sodium Bismuth Titanate in the Ferroelectric Phase, S.G. Lushnikov, S.N. Gvasaliya, I.G. Siny, I.L. Sashin, V.H. Schmidt, and Y. Uesu, Solid State Comm. 116, 41-45 (2000).

1999

Anomalous and Normal Protonic Conductivity in Cs1-x(NH4)xH2PO4, Cs1-x(ND4)xD2PO4, and K1-x(NH4)xH2PO4, V.H. Schmidt, S. Lanceros-Mendez, S.C. Meschia, and N. J. Pinto, Solid State Ionics 125, 147-157 (1999).

Dielectric, NMR and X-Ray Diffraction Study of Pseudo-One-Dimensional Cs1-x(NH4)xH2PO4, S. Meschia, S. Lanceros-MeLndez, A. Zidansek, V.H. Schmidt, and R. Larsen, Ferroelectrics 226, 159-167 (1999).

Hypersonic and Dielectric Anomalies of (Pb(Zn1/3Nb2/3)O3)0.905(PbTiO3)0.095 Single Crystal, C.-S. Tu, F.-C. Chao, C.-H. Yeh, C.-L. Tsai, and V.H. Schmidt, Phys. Rev. B 60, 6348-6351 (1999).

Hypersonic Anomalies and Optical Properties of RbTiOAsO4 and KTiOPO4 Single Crystals, C.-S. Tu, R.S. Katiyar, V.H. Schmidt, R. Guo, and A.S. Bhalla, Phys. Rev. B 59, 251-256 (1999).

Isotope Effect in Cs5H3(SO4)4·0.5H2O Crystals, S.G. Lushnikov, A.V. Belushkin, A.I. Beskrovnyi, A.I. Fedoseev, S.N. Gvasaliya, L.A. Shuvalov, and V.H. Schmidt, Solid State Ionics 125, 119-123 (1999).

PbMg1/3Nb2/3O3 as a Model Object for Light Scattering Experiments, I.G. Siny, S.G. Lushnikov, R.S. Katiyar, and V.H. Schmidt, Ferroelectrics 226, 191-215 (1999).

Phase Coexistence in the Deuteron Glass Rb0.9(ND4)0.1D2AsO4 Proven by Neutron Diffraction, S. Lanceros-MeLndez, V.H. Schmidt, and S.A. Shapiro, Ferroelectrics 223, 203-210 (1999).

Phase Transitions in Antiferroelectric-Side Rb1-x(ND4)xD2AsO4 Crystals Studied by Complex Permittivity, C.-S. Tu and V.H. Schmidt, Ferroelectrics 227, 141-151 (1999).

Piezoelectric Polymer Actuators for Active Vibration Isolation in Space Applications, G. Bohannan, V.H. Schmidt, D. Brandt, and M. Mooibroek, Ferroelectrics 224, 211-217 (1999).

Piezoelectric Polymer Actuators for Vibration Suppression, V.H. Schmidt, R.J. Conant, G. Bohannan, J. Eckberg, S. Halko, J. Hallenberg, C.L. Nelson, N. Peterson, C. Smith, C. Thrasher, and B. Tikalsky, Proc. of SPIE Int. Soc. Opt. Eng. 3669, 162-170 (1999).

1998

Hypersonic Studies in CsD2AsO4 and Cs0.84(ND4)0.16D2AsO4 Single Crystals, C.-S. Tu, V.H. Schmidt, and Z.-Q. Xue, Physica B 254, 112-117 (1998).

Dielectric, NMR and X-Ray Diffraction Study of Cs1-x(NH4)xH2PO4, S. Meschia, S. Lanceros-Mendez, A. Zidansek, V.H. Schmidt, and R. Larson, J. Korean Phys. Soc. 32, S870-S872 (1998).

Dynamical Model for Phase Coexistence in Proton Glass, V.H. Schmidt, AIP Conf. Proc. 436, 192 (1998).

Ferroelectricity and Protonic Conductivity in Cs1-x(NH4)xH2PO4, S. Lanceros-Mendez, S. Meschia, and H. Schmidt, AIP Conf. Proc. 436, 129 (1998).

Influence of NH4-Rb Substitution on the Phase Transitions with Different Kinds of Photon Disorder in Mixed [(NH4)1-x-Rbx]3 H(SO4)2 Crystals, Baranov, V.V. Dolbinina, E.D. Yakushkin, V. Yu. Vinnichenko, V.H. Schmidt, and S. Lanceros-Mendez, Ferroelectrics 217, 285-295 (1998).

Optical Properties of Rb TiAsO4 Single Crystals, C.-S. Tu, Y.-L. Yeh, R. S. Katiyar, R. Guo, V.H. Schmidt, and R.-M. Chien, J. of Korean Phys. Soc. 32, S472-S475 (1998).

Phase Coexistence in Proton Glass, V. H. Schmidt, J. of Korean Phys. Soc. 32, S803-S806 (1998).

Phase Coexistence in Proton Glass, V.H. Schmidt, Z. Trybula, N.J. Pinto, and S.M. Shapiro, Phase Transitions 67, 499-520 (1998).

Phase in Antiferroelectric-Side Rb1-x(ND4)xD2AsO4 Mixed Crystals by Light Scattering, C.-S. Tu, S.-S. Gao, R.-J. Jaw, Z.-Q. Xue, L.-G. Hwa, and V.H. Schmidt, Appl. Phys. B 58, 5440-5447 (1998).

Temperature dependent Raman spectra of Rb1-x(ND4)xD2AsO4 mixed crystals, C.-S. Tu, S.S. Gao, R.J. Jaw, L.G. Hwa, V.H. Schmidt, D. Brandt, and R.-M. Chien, J. Korean Phys. Soc. 32, S490-S492 (1998).

1997

Hypersonic Studies and Refractive Indices of CsTiOAsO4 and KTiOAsO4 Single Crystals, C.-S. Tu, Y.-L.Yeh, V.H. Schmidt, R.-M. Chien, R.S. Katiyar, R. Guo, R. Guo, and A.S. Bhalla, Phys. Rev. B 56, 7988-7992 (1997).

NMR spin lattice relaxation study of Cs1-x(NH4)x H2PO4, S.C. Meschia, A. Zidansek, D. Brandt, and V.H. Schmidt, Ferroelectrics 202, 167-171 (1997).

Random Barrier Height Model for Phase Shifted Conductivity in Perovskites, V.H. Schmidt, G.F. Tuthill, C.-S. Tu, T.V. Schogoleva, and S.C. Meschia, Ferroelectrics 199, 51-67 (1997).

Temperature and Concentration Dependences of Raman Vibrational Modes in Rb1-x(ND4)xD2AsO4 Mixed Crystals, C.-S. Tu, R.-M. Chien, and V.H. Schmidt , Phys. Rev. B 55, 2920-2924 (1997).

1996

Conductivity Across Random Barrier Distribution as Origin of Large Low-Frequency Dielectric Peak in Perovskite Crystals and Ceramics, V.H. Schmidt, G.F. Tuthill, C.-S. Tu, T.V. Schogoleva, and S.C. Meschia, J. Phys. Chem. Solids 57, 1493-1497 (1996).

Monte Carlo Stochastic-Dynamics Study of Dielectric Response and Nonergodicity in Proton Glass, A. Sinitski and V.H. Schmidt, Phys. Rev. B 54, 842-848 (1996).

Raman Studies of Rb1-x(ND4)xD2AsO4 Mixed Crystals, C.-S. Tu, and V.H. Schmidt, Proc. of XVth International Conference on Raman Spectroscopy, 772-773 (1996).

1995

Critical Acoustic Behavior of Relaxor Ferroelectric Na1/2Bi1/2TiO3 in the Intertransition Region, I.G. Siny, C.-S. Tu, and V.H. Schmidt, Phys. Rev. B 51, 5659-5665 (1995).

Erratum: Dielectric Relaxation and Piezoelectric Coupling in the Mixed Proton Glass Crystal K0.61(NH4)0.39H2PO4, C.-S. Tu, V.H. Schmidt, and A.A. Saleh, Phys. Rev. B 51, 3320 (1995).

High Frequency Relaxation in Nematic Liquid Crystal Mixtures by Brillouin Scattering, I.G. Siny, C.-S. Tu, and V.H. Schmidt, Molecular Crystals and Liquid Crystals Science and Technology A 269, 125-132 (1995).

Hypersound Anomalies and Elastic Constants in Single-Crystal PbMg1/3Nb2/3O3 by Brillouin Scattering, C.-S. Tu, V.H. Schmidt, and I.G. Siny, J. of Appl. Phys. 78, 5665-5668 (1995).

The Ferroelectric and Proton Glass Coexistence Region in K0.77(NH4)0.23H2AsO4 Detected by Complex Permittivity Measurements, Z. Trybula, S. Los, C.-S. Tu, and V.H. Schmidt, J. Phys.-Condens. Matter 7, 947-956 (1995).

Pressure Dependence of the Coexistence of Proton-Glass and Ferro-/Antiferroelectric Order in Rb1-x(ND4)xD2AsO4, G.A. Samara and V.H. Schmidt, Ferroelectrics 168, 239-250 (1995).

1994

Temperature and Concentration Dependences of Acoustic Velocity and Damping in Rb1-x(ND4)xD2AsO4 Mixed Crystals by Brillouin Backscattering, C.-S. Tu and V.H. Schmidt, Phys. Rev. B 50, 16167-16172 (1994).

Errata: 75As Nuclear Quadrupole Resonance in Weakly Substitutionally Disordered Rb1-x(ND4)xH2AsO4, G. Papantopoulos, G. Papavassiliou, F. Milia, V.H. Schmidt, J.E. Drumheller, N.J. Pinto, R. Blinc, and B. Zalar, Phys. Rev. Lett. 73, 1563 (1994).

75As Nuclear Quadrupole Resonance in Weakly Substitutionally Disordered Rb1-x(ND4)xH2AsO4, G. Papantopoulos, G. Papavassiliou, F. Milia, V.H. Schmidt, J.E. Drumheller, N.J. Pinto, R. Blinc, and B. Zalar, Phys. Rev. Lett. 73, 276-279 (1994).

Sequence of Dielectric Anomalies and High-Temperature Relaxation Behavior in Na1/2Bi1/2TiO3, C.-S. Tu, I.G. Siny, and V.H. Schmidt, Phys. Rev. B 49, 11550-11559 (1994).

1993

Dielectric Relaxation and Piezoelectric Coupling in the Mixed Proton Glass Crystal K0.61(NH4)0.39H2PO4, C.-S. Tu, V.H. Schmidt, and A.A. Saleh, Phys. Rev. B 48, 12483-12487 (1993).

Deuteron NMR Study of Dynamics and of Coexistence of Paraelectric and Ferroelectric Phases in Rb0.09(ND4)0.10D2AsO4, N.J. Pinto, F.L. Howell, and V.H. Schmidt, Phys. Rev. B 48, 5983-5986 (1993).

Field-Heated, Field-Cooled and Zero-Field-Heated Static Permittivity of the Deuteron Glass Rb1-x(ND4)xD2AsO4, N.J. Pinto, K. Ravindran, and V.H. Schmidt, Phys. Rev. B 48, 3090-3094 (1993).

1992

Complex Permittivity of the Deuterated and Undeuterated Proton Glass Rb1-x(ND4)xH2AsO4, F.L. Howell, N.J. Pinto, and V.H. Schmidt, Phys. Rev. B 46, 13762-13766 (1992).

1991

Phase Transitions in KH2PO4 and RbH2PO4 to 14 GPa Observed by Capacitance Change in a Diamond Anvil Cell, Z.X. Bao, V.H. Schmidt, and F.L. Howell, J. Appl. Phys. 70, 6804-6808 (1991).

Coexistance of Proton-Glass and Ferroelectric Order in Rb1-x(ND4)xH2AsO4, Z. Trybula, V.H. Schmidt, and J.E. Drumheller, Phys. Rev. B 43, 1287-1289 (1991).

1990

Anomalies of Hypersonic Velocity and Attenuation in Vinylidene Flouride-Triflouroethylene Copolymer from Brillouin Scattering, Z. Liu and V.H. Schmidt, Appl. Phys. Lett. 57, 2196-2198 (1990).

EPR Studies of AsO44- Spin-Lattice-Relaxation Times in Antiferroelectric NH4H2AsO4 and Mixed Glassy Rb1-x(ND4)xH2AsO4 (x=0.35), S. Waplak, Z. Trybula, J.E. Drumheller, and V.H. Schmidt, Phys. Rev. B 42, 7777-7782 (1990).

Proton-Glass State in K0.60(NH4)0.40H2AsO4 Detected by Dielectric Measurements, Z. Trybula, V.H. Schmidt, and J.E. Drumheller, Phys. Rev. B 42, 6733-6735 (1990).

85Rb, 87Rb, and 17O Nuclear-Quadrupole-Resonance Study of Rb(H1-xDx)2PO4, J. Seliger, V. Zagar, R. Blinc, and V.H. Schmidt, Phys. Rev. B 42, 3881-3886 (1990).

Normal-Distortion-Mode Approach to Liquid-Crystal Elastic Energy, V.H. Schmidt, Phys. Rev. Lett. 64, 535-583 (1990).


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Updated: March 18, 2013 15:07