University of Connecticut | |
Faculty
S. Pamir Alpay
Recent publications: Book J.V. Mantese and S. P. Alpay, Graded Ferroelectrics, Transpacitors, and Transponents, Multifunctional Thin Film Materials Series, 158 p., 85 illus., Hardcover, ISBN: 0-387-23311-3, Springer Verlag (New York, 2005). Book Chapters S. P. Alpay in Handbook of Thin Film Materials, Vol.: 3, Ferroelectric and Dielectric Thin Films, “Twinning in Ferroelectric Thin Films: Theory and Structural Analysis,” edited by H. S. Nalwa, pp. 517-543, Academic Press (San Diego), 2002. D. Jena, S. P. Alpay, and J. V. Mantese, in Polarization Effects in Semiconductors: From Ab Initio Theory to Device Applications, “Functionally Graded Polar Heterostructures: New Materials for Multifunctional Devices,” edited by D. Jena and C. Wood, pp. 307-368, Springer (New York), 2007. G. Akcay, S. P. Alpay, and V. Nagarajan, in Ferroelectric Films at Microwave Frequencies, “Dislocations in Ferroelectric Thin Films,” edited by T. J. Jackson, P. M. Suherman, and P. Bao, in press, Research Signpost (Kerala), 2008. Selected Refereed Journals: B. S. Allimi, M. Aindow, and S. P. Alpay, “Thickness Dependence of Electronic Phase Transitions in Epitaxial V2O3 Films on (0001) LiTaO3,” Appl. Phys. Lett. 93, 112109 (2008). K. Zhou, S. A. Boggs, R. Ramprasad, M. Aindow, C. Erkey, and S. P. Alpay, “Dielectric Response and Tunability of a Dielectric-Paraelectric Composite,” Appl. Phys. Lett. 93, 102908 (2008). Q. Y. Qiu, V. Nagarajan, and S. P. Alpay, “Film Thickness versus Misfit Strain Phase Diagrams for Epitaxial PbTiO3 Ultrathin Ferroelectric Films,” Phys. Rev. B. 78, 064117 (2008). B. S. Allimi, S. P. Alpay, C. K. Xie, B. O. Wells, J. I. Budnick, and D. M. Pease, “Resistivity of V2O3 Thin Films Deposited on a-plane (110) and c-plane (001) Sapphire by Pulsed Laser Deposition,” Appl. Phys. Lett. 92, 202105 (2008). M. W. Cole, C. V. Weiss, E. Ngo, S. Hirsch, L. A. Coryell, and S. P. Alpay, “Microwave Dielectric Properties of Graded Barium Strontium Titanate Films”, Appl. Phys. Lett. 92, 182906 (2008). M. W. Cole, E. Ngo, S. Hirsch, M. B. Okatan, and S. P. Alpay, “Dielectric Properties of MgO-doped Compositionally Graded Multilayer Barium Strontium Titanate Films,” Appl. Phys. Lett. 92, 072906 (2008). G. Akcay, S. P. Alpay, G. A. Rossetti, Jr., and J. F. Scott, “Influence of Mechanical Boundary Conditions on the Electrocaloric Properties of Ferroelectric Thin Films,” J. Appl. Phys. 103, 024104 (2008). R. Nath, S. Zhong, S. P. Alpay, B. D. Huey, and M. W. Cole, “Enhanced Piezoelectric Response from Barium Strontium Titanate Multilayer Films,” Appl. Phys. Lett. 92, 012916 (2008). M. K. Aydinol, J. V. Mantese, and S. P. Alpay, “A Comparative Ab Initio Study of Ferroelectric Behavior in KNO3 and CaCO3,” J. Phys.: Condens. Matter 19, 496210 (2007). B. S. Allimi, S. P. Alpay, D. Goberman, T. Huang, J. I. Budnick, D. M. Pease, and A. I. Frenkel, “Growth of V2O3 Thin Films on a-plane (110) and c-plane (001) Sapphire via Pulsed Laser Deposition,” J. Mater. Res. 22, 2825-2831 (2007). M. W. Cole, E. Ngo, S. Hirsch, J. D. Demaree, S. Zhong, and S. P. Alpay, “The Fabrication and Material Properties of Compositionally Multilayered Ba1-xSrxTiO3 Thin Films for Realization of Temperature Insensitive Tunable Phase Shifter Devices,” J. Appl. Phys. 102, 034104 (2007). G. Akcay, S. Zhong, B. S. Allimi, S. P. Alpay, and J. V. Mantese, “Strain Induced Internal Potentials of Compositionally Graded Epitaxial Ferroelectric Thin Films,” Appl. Phys. Lett. 91, 012904 (2007). G. Akcay, S. P. Alpay, J. V. Mantese, and G. A. Rossetti, Jr., “Magnitude of the Intrinsic Electrocaloric Effect in Ferroelectric Perovskite Thin Films at High Electric Fields,” Appl. Phys. Lett. 90, 252909 (2007). G. Akcay, I. B. Misirlioglu, and S. P. Alpay, “Dielectric and Pyroelectric Properties of Barium Strontium Titanate Films on Orthorhombic Substrates with (110)//(100) Epitaxy,” J. Appl. Phys. 101, 104110 (2007). S. Zhong, S. P. Alpay, M. W. Cole, E. Ngo, S. Hirsch, and J. D. Demaree, “Highly Tunable and Temperature Insensitive Multilayer Barium Strontium Titanate Films,” Appl. Phys. Lett. 90, 092901 (2007). I. B. Misirlioglu, G. Akcay, S. Zhong, and S. P. Alpay, “Interface Effects in Ferroelectric Bilayers and Heterostructures,” J. Appl. Phys. 101, 036107 (2007). C. Sudakar, J. V. Mantese, A. L. Micheli, R. Naik, G. Srinivasan, S. P. Alpay, and G. Lawes, “Internal Magnetostatic Potentials of Magnetization-Graded Ferromagnetic Materials,” Appl. Phys. Lett. 90, 062502 (2007). S. Zhong, S. P. Alpay, J. V. Mantese, and A. L. Roytburd, “Interlayer Coupling in Ferroelectric Bilayer and Superlattice Heterostructures,” IEEE Transactions on Ultrasonics Ferroelectric and Frequency Control 53, 2349-2356 (2006). S. Zhong, Z. –G. Ban, S. P. Alpay, and J. V. Mantese, “Large Piezoelectric Strains from Polarization Graded Ferroelectrics,” Appl. Phys. Lett. 89, 142913 (2006). S. Zhong, S. P. Alpay, and J. V. Mantese, “High Capacity Oxide/Ferroelectric/Oxide Stacks for On-Chip Charge Storage,” Appl. Phys. Lett. 89, 042906 (2006). G. Akcay, I. B. Misirlioglu, and S. P. Alpay, “Dielectric Tunability of (110) Oriented Barium Strontium Titanate Epitaxial Films on (100) Orthorhombic Substrates,” Appl. Phys. Lett. 89, 042903 (2006). S. Zhong, S. P. Alpay, and V. Nagarajan, “Piezoelectric and Dielectric Tunabilities of Ultra-thin Ferroelectric Heterostructures,” J. Mater. Res. 21, 1600-1606 (2006). I. B. Misirlioglu, S. P. Alpay, F. He, and B. O. Wells, “Stress Induced Monoclinic Phase in Epitaxial BaTiO3 on MgO,” J. Appl. Phys. 99, 104103 (2006). S. Zhong, S. P. Alpay, and J. V. Mantese, “High Dielectric Tunability in Ferroelectric-Paraelectric Bilayers and Multilayer Superlattices,” Appl. Phys. Lett. 88, 132904 (2006). I. B. Misirlioglu, S. P. Alpay, M. Aindow, and V. Nagarajan, “Thermodynamic and Electrostatic Analysis of Threading Dislocations in Epitaxial Ferroelectric Films,” Appl. Phys. Lett. 88, 102906 (2006). G. Akcay, S. Zhong, S. P. Alpay, and J. V. Mantese, “Dynamic Pyroelectric Enhancement of Homogeneous Ferroelectric Materials,” Solid State Communications 137, 589-594 (2006). I. B. Misirlioglu, A. L. Vasiliev , S. P. Alpay, M. Aindow, and R. Ramesh, “Defect Microstructures in Epitaxial PbZr0.2Ti0.8O3 Films Grown on (001) SrTiO3 by Pulsed Laser Deposition,” J. Mater. Sci. 41 (40th Anniversary Special Issue), 697-707 (2006). D.M. Potrepka, S. Hirsch, M.W. Cole, W.D. Nothwang, S. Zhong, and S. P. Alpay, “Effect of Strain on Tunability in Ba0.60Sr0.40TiO3 Thin Films on Pt-Si Substrates,” J. Appl. Phys. 99, 014108 (2006). L. C. Zhang, T. Zhou, S. P. Alpay, M. Aindow, and M. H. Wu, “Origin of Pseudoelastic Behavior in Ti-Mo-Based Alloys,” Appl. Phys. Lett. 87, 241909 (2005). S. Zhong, S. P. Alpay, and J. V. Mantese, “Compositional Symmetry Breaking in Ferroelectric Bilayers,” Appl. Phys. Lett. 87, 102902 (2005). A. L. Roytburd, S. Zhong, and S. P. Alpay, “Dielectric Anomaly due to Electrostatic Coupling in Ferroelectric-Paraelectric Bilayers and Multilayers,” Appl. Phys. Lett. 87, 092902 (2005). J. V. Mantese, N. W. Schubring, A. L. Micheli, R. W. Hayes, G. Srinivasan, and S. P. Alpay, “Magnetization-Graded Ferromagnets: The Magnetic Analogues of Semiconductor Junction Elements,” Appl. Phys. Lett. 87, 082503 (2005). I. B. Misirlioglu, A. L. Vasiliev, M. Aindow, and S. P. Alpay, “Strong Degradation of Physical Properties and Formation of a Dead Layer in Ferroelectric Films due to Interfacial Dislocations,” Integrated Ferroelectrics 71, 67-80 (2005). L. C. Zhang, T. Zhou, M. Aindow, S. P. Alpay, M. J. Blackburn, and M. H. Wu, “Nucleation of Stress-induced Martensites in a Ti/Mo-based Alloy,” J. Mater. Sci. 40, 2833-2836 (2005). V. Nagarajan, C. L. Jia, H. Kohlstedt, R. Waser, I.B. Misirlioglu, S. P. Alpay, and R. Ramesh, “Misfit Dislocations in Nanoscale Ferroelectric Heterostructures,” Appl. Phys. Lett. 86, 192910 (2005). S. Zhong, S. P. Alpay, Z. –G. Ban, and J. V. Mantese, “Effective Pyroelectric Response of Compositionally Graded Ferroelectric Materials,” Appl. Phys. Lett. 86, 092903 (2005). F. He, B. O. Wells, Z. –G. Ban, S. P. Alpay, S. Grenier, S. M. Shapiro, W. Si, A. Clark, and X. X. Xi, “Structural Phase Transitions in Epitaxial Perovskite Films,” Phys. Rev. B 70, 235405 (2004). S. P. Alpay, I. B. Misirlioglu, V. Nagarajan, and R. Ramesh, “Can Interface Dislocations Degrade Ferroelectric Properties?” Appl. Phys. Lett. 85, 2044-2046 (2004). A. Sharma, Z. –G. Ban, S. P. Alpay, and J. V. Mantese, “The Role of Thermally Induced Internal Stresses on the Tunability of Textured Barium Strontium Titanate Films,” Appl. Phys. Lett. 85, 985-987 (2004). S. P. Alpay, I. B. Misirlioglu, A. Sharma, and Z. –G. Ban, “Structural Characteristics of Ferroelectric Phase Transformations in Single Domain Epitaxial Films,” J. Appl. Phys. 95, 8118-8123 (2004). A. Sharma, Z. –G. Ban, S. P. Alpay, and J. V. Mantese, “Effect of Operating Temperature and Film Thickness on the Pyroelectric Response of Ferroelectric Materials,” Appl. Phys. Lett. 84, 4959-4961 (2004). Z. –G. Ban, F. He, S. P. Alpay, B. O. Wells, and X. X. Xi, “Multiple Relaxation Mechanisms in SrTiO3 / SrRuO3 Heterostructures,” Appl. Phys. Lett. 84, 4848-4850 (2004). A. Sharma, Z. –G. Ban, S. P. Alpay, and J. V. Mantese, “Pyroelectric Response of Ferroelectric Thin Films,” J. Appl. Phys. 95, 3618-3625 (2004). I. B. Misirlioglu, A. L. Vasiliev, M. Aindow, S. P. Alpay, and R. Ramesh, “Threading Dislocation Generation in Epitaxial (Ba,Sr)TiO3 Films Grown on (001) LaAlO3 by Pulsed Laser Deposition,” Appl. Phys. Lett. 84, 1742-1744 (2004). T. Zhou, M. Aindow, S. P. Alpay, M. J. Blackburn, and M. H. Wu, “Pseudoelastic Deformation Behavior in a Ti/Mo-Based Alloy,” Scripta Mater. 50, 343-348 (2004).
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