Book Chapters

"Twinning in Ferroelectric Thin Films: Theory and Structural Analysis", S. P. Alpay in Handbook of Thin Film Materials, Vol.: 3, Ferroelectric and Dielectric Thin Films, , edited by H. S. Nalwa, pp. 517-543, Academic Press (San Diego), 2002.

2009

Polarization coupling in ferroelectric multilayers, M. B. Okatan, J. V. Mantese, and S. P. Alpay, Phys. Rev. B., Vol. 79, 174113, 2009.

Ab initio study of ferroelectricity in BaTiO3 nanowires, G. Pilania, S. P. Alpay, and R. Ramprasad, Phys. Rev. B., Vol. 80, 014113, 2009.

Domain engineering in compositionally graded ferroelectric films for enhanced dielectric response and tunability, M. B. Okatan, A. L. Roytburd, J. V. Mantese, and S. P. Alpay, J. Appl. Phys., Vol. 105, 114106, 2009.

Electrothermal properties of perovskite ferroelectric films, J. Zhang, A. A. Heitmann, S. P. Alpay, and G. A. Rossetti Jr., J. Mater. Sci., Vol. 44, 5263, 2009.

Compositionally graded ferroelectric multilayers for frequency agile tunable devices, C. V. Weiss, M. B. Okatan, S. P. Alpay, M. W. Cole, E. Ngo, and R. C. Toonen, J. Mater. Sci., Vol. 44, 5364, 2009.

Recent developments in ferroelectric nanostructures and multilayers, S. P. Alpay, V. Nagarajan, and G. A. Rossetti, J. Mater. Sci., Vol. 44, 5021, 2009.

Imprint in ferroelectric materials due to space charges: A theoretical analysis, M. B. Okatan and S. P. Alpay, Appl. Phys. Lett., Vol. 95, 092902, 2009.

Synthesis, characterization, and photocatalytic properties of ZnO/(La,Sr)CoO3 composite nanorod arrays, D. Jian, P. X. Gao, W. Cai, B. S. Allimi, S. P. Alpay, Y. Ding, Z. L. Wang, and C. Brooks, J. Mater. Chem., Vol. 19, 970, 2009.

2008

Enhanced Dielectric Response and Temperature Insensitivity of Compositionally Stratified Ba1-xSrxTiO3 Thin Films, M. W. Cole and S. P. Alpay, Integ. Ferro., Vol. 100, 48, 2008.

Dielectric Response of Variable Thickness Ba0.6Sr0.4TiO3 Films for Property-Specific Device Applications, C. V. Weiss, M. W. Cole, S. P. Alpay, E. Ngo, R. C. Toonen, S. G. Hirsch, J. D. Demaree, and C. Hubbard, Integ. Ferro., Vol. 100, 36, 2008.

Thickness dependence of electronic phase transitions in epitaxial V2O3 films on(0001) LiTaO3, B. S. Allimi, M. Aindow, and S. P. Alpay, Appl. Phys. Lett, Vol. 93, 112109, 2008.

Cation ordering in epitaxial lead zirconate titanate films, L. C. Zhang, A. L. Vasiliev, I. B. Misirlioglu, R. Ramesh, S. P. Alpay, and M. Aindow, Appl. Phys. Lett., Vol. 93, 262903, 2008.

Ferroelastic domains in bilayered ferroelectric thin films, R. Mahjoub, V. Anbusathaiah, S. P. Alpay, and V. Nagarajan, J. Appl. Phys., Vol. 104, 124103, 2008.

Dielectric tunability of graded barium strontium titanate multilayers: Effect of thermal strains, M. B. Okatan, M. W. Cole, and S. P. Alpay, J. Appl. Phys. Vol. 104, 104107, 2008.

Resistivity of V2O3 thin films deposited on a-plane (110) and c-plane (001) sapphire by pulsed laser deposition, B. S. Allimi, S. P. Alpay, C. K. Xie, B. O. Wells, J. I. Budnick, and D. M. Pease, Appl. Phys. Lett., Vol. 92, 202105, 2008.

Microwave dielectric properties of graded barium strontium titanate films, M. W. Cole, C. V. Weiss, E. Ngo, S. Hirsch, L. A. Coryell, and S. P. Alpay, Appl. Phys. Lett., Vol.92, 182906, 2008.

Enhanced piezoelectric response from barium strontium titanate multilayer films, R. Nath, S. Zhong, S. P. Alpay, B. D. Huey, and M. W. Cole, Appl. Phys. Lett., Vol. 92, 012916, 2008.*

Dielectric properties of MgO-doped compositionally graded multilayer barium strontium titanate films, M. W. Cole, E. Ngo, S. Hirsch, M. B. Okatan, and S. P. Alpay, Appl. Phys. Lett., Vol. 92, 072906, 2008.*

Influence of mechanical boundary conditions on the electrocaloric properties of ferroelectric thin films, G. Akcay, S. P. Alpay, G. A. Rossetti, Jr., and J. F. Scott, J. Appl. Phys., Vol. 103, 024104, 2008.

2007

A comparative ab initio study of the ferroelectric behaviour in KNO3 and CaCO3, M. K. Aydinol, J.V. Mantese, and S. P. Alpay, J. Phys.: Condens. Matter., Vol. 19, 496210, 2007.

Growth of V2O3 thin films on a-plane (110) and c-plane (001) sapphire via pulsed-laser deposition, B.S. Allimi, S.P. Alpay, D. Goberman, T. Huang, J.I. Budnick, D.M. Pease, A.I. Frenkel, J. Mater. Res., Vol. 22, 2825, 2007.

The fabrication and material properties of compositionally multilayered Ba1-xSrxTiO3 thin films for realization of temperature insensitive tunable phase shifter devices, M. W. Cole, E. Ngo, S. Hirsch, J. D. Demaree, S. Zhong, S. P. Alpay, J. Appl. Phys., Vol. 102, 034104, 2007.*

Strain induced internal potentials of compositionally graded epitaxial ferroelectric thin films, G. Akcay, S. Zhong, B. S. Allimi, S. P. Alpay, J. V. Mantese, Appl. Phys. Lett., Vol. 91, 012904, 2007.*

Magnitude of the intrinsic electrocaloric effect in ferroelectric perovskite thin films at high electric fields, G. Akcay, S. P. Alpay, J. V. Mantese, G. A. Rossetti, Jr., Appl. Phys. Lett., Vol. 90, 252909, 2007.

Dielectric and Pyroelectric Properties of Barium Strontium Titanate Films on Orthorhombic Substrates with (110)//(100) Epitaxy, G. Akcay, I. B. Misirlioglu, S. P. Alpay, J. Appl. Phys., Vol. 101, 104110, 2007.*

Highly tunable and temperature insensitive multilayer barium strontium titanate films, S. Zhong, S. P. Alpay, M. W. Cole, E. Ngo, S. Hirsch, and J. D. Demaree, Appl. Phys. Lett., Vol. 90, 092901, 2007*

Interface effects in ferroelectric bilayers and heterostructures, I. B. Misirlioglu, G. Akcay, S. Zhong, P. Alpay, J. Appl. Phys., Vol. 101, 036107, 2007

Internal magnetostatic potentials of magnetization-graded ferromagnetic materials, C. Sudakar, R. Naik, G. Lawesa, J. V. Mantese, A. L. Micheli, G. Srinivasan, S. P. Alpay, Appl. Phys. Lett., Vol. 90, 062502, 2007.

2006

Large piezoelectric strains from polarization graded ferroelectrics, S. Zhong, Z.-G. Ban, S. P. Alpay, and J. V. Mantese, Appl. Phys. Lett., Vol. 89, 142913, 2006.

Dielectric tunability of (110) oriented barium strontium titanate epitaxial films on (100) orthorhombic substrates, G. Akcay, I. B. Misirlioglu, and S. P. Alpay, Appl. Phys. Lett., Vol. 89, 042903, 2006.*

High capacity oxide/ferroelectric/oxide stacks for on-chip charge storage, S. Zhong, S. P. Alpay, and J. V. Mantese, Appl. Phys. Lett., Vol. 89, 042906, 2006.*

Piezoelectric and dielectric tunabilities of ultra-thin ferroelectric heterostructures, S. Zhong, S.P. Alpay, and V. Nagarajan, J. Mater. Res., Vol. 21, 1600, 2006.*

Stress induced monoclinic phase in epitaxial BaTiO3 on MgO, I. B. Misirlioglu and S. P. Alpay, F. He and B. O. Wells, J. Appl. Phys., Vol. 99, 104103, 2006.*

High dielectric tunability in ferroelectric-paraelectric bilayers and multilayer superlattices, S. Zhong, P. Alpay, and J. Mantese, Appl. Phys. Lett., Vol. 88, 132904, 2006.*

Thermodynamic and electrostatic analysis of threading dislocations in epitaxial ferroelectric films, I. B. Misirlioglu, S. P. Alpay, M. Aindow, and V. Nagarajan, Appl. Phys. Lett., Vol. 88, 102906, 2006.*

Dynamic pyroelectric enhancement of homogeneous ferroelectric materials, G. Akcay, S. Zhong, S.P. Alpay, J.V. Mantese, Solid State Communications, Vol. 137, 589, 2006.*

Defect microstructures in epitaxial PbZr0.2Ti0.8O3 films grown on (001) SrTiO3 by pulsed laser deposition, I. B. Misirlioglu, A. L. Vasiliev, S P Alpay, M. Aindow, R. Ramesh, J. Mater. Sci., Vol. 41, 697, 2006.*

Effect of strain on tunability in Ba0.60Sr0.40TiO3 thin films on Pt-Si substrates, D. M. Potrepka, S. Hirsch, M. W. Cole, W. D. Nothwang, S. Zhong, and S. P. Alpay, J. Appl. Phys., Vol. 99, 014108, 2006.*

2005

Origin of pseudo-elastic behavior in Ti-Mo-based alloys, L. C. Zhang, T. Zhou, S. P. Alpay, M. Aindow, M. H. Wu, Appl. Phys. Lett., Vol. 87, 241909, 2005.

Compositional symmetry breaking in ferroelectric bilayers, S. Zhong, S. P. Alpay, J. V. Mantese, Appl. Phys. Lett., Vol. 87, 102902, 2005.*

Dielectric anomaly due to electrostatic coupling in ferroelectric-paraelectric bilayers and multilayers, A. L. Roytburd, S. Zhong and S. P. Alpay, Appl. Phys. Lett., Vol. 87, 092902, 2005.*

Magnetization-graded ferromagnets: The magnetic analogs of semiconductor junction elements, Joseph V. Mantese, Adolph L. Micheli, Norman W. Schubring, R. W. Hayes, G. Srinivasan, S. P. Alpay, Appl. Phys. Lett., Vol. 87, 082503, 2005.*

Nucleation of stress induced martensites in a Ti/Mo based alloy, L. C. Zhang, T. Zhou, M. Aindow, S. P. Alpay and M. J. Blackburn, Journal of Materials Science, Vol. 40, 2833, 2005.

Dielectric Permittivity and Pyroelectric Response of Compositonally Graded Ferroelectrics, S. Zhong, S. P. Alpay, Z.-G Ban, J. V. Mantese, Integ. Ferro. Vol 71, 1, 2005.*

Strong Degradation of Physical Properties and Formation of a Dead Layer in Ferroelectric Films due to Interfacial Dislocations, I. B. Misirlioglu, A. L. Vasiliev, M. Aindow, and S. P. Alpay, Integ. Ferro. Vol 71, 67, 2005.*

Misfit dislocations in ferroelectric heterostructures, V. Nagarajan, C. L. Jia, H. Kohlstedt, R. Waser, I. B. Misirlioglu, S. P. Alpay, R. Ramesh, Appl. Phys. Lett., Vol. 86, 192910, 2005.*

Effective pyroelectric response of compositionally graded ferroelectric materials, S. Zhong, S. P. Alpay, Z.-G. Ban, J. V. Mantese, Appl. Phys. Lett., Vol. 86, 092903, 2005.*

2004

Structural phase transition in epitaxial perovskite films, Feizhou He, B. O. Wells, Z. -G. Ban, S. P. Alpay, S. Grenier, S. M. Shapiro, Weidong Si, A. Clark, X. X. Xi, Phys. Rev. B, Vol. 70, 235405, 2004.*

Can interface dislocations degrade ferroelectric properties? S. P. Alpay, I. B. Misirlioglu, V. Nagarajan, R. Ramesh, Appl. Phys. Lett., Vol. 85, p. 2044, 2004.*

The role of thermally- induced internal stresses on the tunability of textured barium strontium titanate thin films, A. Sharma, Z.-G. Ban, S. P. Alpay, J. V. Mantese, Appl. Phys. Lett., Vol. 85, p. 985, 2004.*

Structural characteristics of ferroelectric phase transformations in single-domain epitaxial films S. P. Alpay, I. B. Misirlioglu, A. Sharma, Z.-G. Ban, J. Appl. Phys., Vol. 95, p. 8118, 2004.*

Effect of operating temperature and film thickness on the pyroelectric response of ferroelectric materials A. Sharma, Z.-G. Ban, S. P. Alpay, J. V. Mantese, Appl. Phys. Lett., Vol. 84, p. 4959, 2004.*

Multiple relaxation mechanisms in SrTiO3/SrRuO3 heterostructures, Z.-G. Ban, S. P. Alpay, F. He, B. O. Wells, X. X. Xi, Appl. Phys., Vol. 84, p. 4848, 2004.*

Pyroelectric response of ferroelectric thin films, A. Sharma, Z.-G. Ban, S. P. Alpay, J. V. Mantese, J. Appl. Phys., Vol. 95, p. 3618, 2004.*

Threading dislocation generation in epitaxial (Ba, Sr)TiO3 films grown on (001) LaAlO3 by pulsed laser deposition, I. B. Misirlioglu, A. L. Vasiliev, M. Aindow, S. P. Alpay, R. Ramesh, Appl. Phys. Lett., Vol. 84, p. 1742, 2004.*

Pseudo elastic deformation behavior in a Ti/Mo-based alloy, T. Zhou, M. Aindow, S. P. Alpay, M. J. Blackburn, M. H. Wu, Scripta Materialia, 50, p. 343, 2004.

2003

Strain relaxation during in situ growth of SrTiO3 thin films, L. S.-J. Peng, X. X. Xi, B. H. Moeckly, S. P. Alpay, Appl. Phys. Lett., Vol. 83, p. 4592, 2003.*

Dependence of the pyroelectric response on internal stresses in ferroelectric thin films, Z.-G. Ban, S. P. Alpay, Appl. Phys. Lett., Vol. 82, p. 3499, 2003.*

Hysteresis Offset and Dielectric Response of Compositionally Graded Ferroelectric Materials Z.-G. Ban, S. P. Alpay, J. V. Mantese, Integ. Ferro., Vol. 58, 1281, 2003.*

Fundamentals of graded ferroic materials and devices, Z.-G. Ban, S. P. Alpay, J. V. Mantese, Phys. Rev. B, Vol. 67, 184104, 2003.*

Thermodynamic analysis of temperature graded ferroelectrics, S. P. Alpay, Z.-G. Ban, J. V. Mantese, Appl. Phys. Lett., Vol. 82, p. 1269, 2003.*

Optimization of the tunability of barium strontium titanate films via epitaxial stresses, Z.-G. Ban and S. P. Alpay, J. Appl. Phys., Vol 93, p. 504, 2003.*

2002

Stress-induced polarization-graded ferroelectrics, J. V. Mantese, N. W. Schubring, A. L. Micheli, M. P.Thompson, R. Naik, G. W. Auner, I. B. Misirlioglu and S. P. Alpay, Appl. Phys. Lett., Vol. 81, p.1068, 2002.*

Phase Diagrams and Dielectric Response of Epitaxial Barium Strontium Titanate Films: A Theoretical Analysis, Z.-G. Ban and S. P. Alpay, J. Appl. Phys., Vol. 91, p. 9288, 2002.*

Imaging 3-Dimensional Polarization in Epitaxial Polydomain Ferroelectric Thin Films, C.S. Ganpule, B.K. Hill, V. Nagarajan, A.L. Roytburd, E.D. Williams, R. Ramesh, S. P. Alpay, A. Roelofs, R. Waser, and L.M. Eng, J. Appl. Phys., Vol. 91, p.1477, 2002.

2001-1998

Dependence of Dielectric Properties on Internal Stresses in Epitaxial Barium Strontium Titanate Thin Films, H. Li, A.L. Roytburd, S. P. Alpay, T.D. Tran, L. Salamanca-Riba, and R. Ramesh, Appl. Phys. Lett., Vol. 78, p. 2354, 2001.

Three-domain Architecture of Stress-free Epitaxial Ferroelectric Films, A.L. Roytburd, S. P. Alpay, L.A. Bendersky, V. Nagarajan, and R. Ramesh, J. Appl. Phys., Vol. 89, p. 553, 2001.

Dielectric Properties in Heteroepitaxial Ba0.6Sr0.4TiO3 Thin Films: Effect of Internal Stress and Dislocation-type Defects, C.L. Canedy, H. Li, S. P.Alpay, L. Salamanca-Riba, A.L. Roytburd, and R. Ramesh, Appl. Phys. Lett., Vol. 77, p. 1695, 2000.

Role of Substrate on the Dielectric and Piezoelectric Behavior of Epitaxial Lead Magnesium Niobate-Lead Titanate Relaxor Thin Films, V. Nagarajan, S. P. Alpay, C.S. Ganpule, B.K. Nagaraj, S. Aggarwal, E.D. Williams, A.L. Roytburd, and R. Ramesh, Appl. Phys. Lett., Vol. 77, p. 438, 2000.

Measurement of Internal Stresses via the Polarization in Epitaxial Ferroelectric Thin Films, A.L. Roytburd, S. P. Alpay, V. Nagarajan, C.S. Ganpule, S. Aggarwal, E.D. Williams, and R. Ramesh, Phys. Rev. Lett., Vol. 85, p. 190, 2000.

Effect of Mechanical Constraint on the Dielectric Properties of Epitaxial Pb(Mg1/3Nb2/3)O3(90%)-PbTiO3(10%) Relaxor Thin Films, V. Nagarajan, C.S. Ganpule, B. Nagaraj, S. Aggarwal, S. P. Alpay, A.L. Roytburd, E.D. Williams, and R. Ramesh, Appl. Phys. Lett., Vol. 75, p. 4183, 1999.

Thickness Dependence of Structural and Electrical Properties in Epitaxial Lead Zirconate Titanate Films, V. Nagarajan, I.G. Jenkins, S. A. Alpay, H. Li, S. Aggarwal, L. Salamanca-Riba, A.L. Roytburd, and R. Ramesh, J. Appl. Phys., Vol. 86, p. 595, 1999.

Effect of the Electrode Layer on the Polydomain Structure of Epitaxial PbZr0.2Ti0.8O3 Thin Films, S. P. Alpay, V. Nagarajan, L.A. Bendersky, M.D. Vaudin, S. Aggarwal, R. Ramesh, and A.L. Roytburd, J. Appl. Phys., Vol. 85, p. 3271, 1999.

Thermodynamics of Polydomain Heterostructures. III. Domain Stability Map, S. P. Alpay, A.L. Roytburd, J. Appl. Phys., Vol. 83, p. 4714, 1998.