Publications

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Conference Paper
Alpay, S.P., A.L. Roytburd, V. Nagarajan, L.A. Bendersky, and Ramamoorthy Ramesh. "Cellular domain architecture of stress-free epitaxial ferroelectric films." Materials Research Society Symposium - Proceedings. Vol. 655. 2001. XLXXV-XLXXVI.
Ouyang, J., Ramamoorthy Ramesh, and A.L. Roytburd. "Effective direct piezoelectric constants in epitaxial ferroelectric films as MEMS sensors." Materials Research Society Symposium Proceedings. Vol. 881. 2005. 125-130.
Nagarajan, V., S.P. Alpay, C.S. Ganpule, B. Nagaraj, S. Aggarwal, A.L. Roytburd, E.D. Williams, and Ramamoorthy Ramesh. "Epitaxial PMN-PT relaxor thin films: dependence of dielectric and piezoelectric properties on film thickness." Materials Research Society Symposium - Proceedings. Vol. 596. Materials Research Society, Warrendale, PA, United States, 2000. 505-510.
Ganpule, C.S., A.L. Roytburd, V. Nagarajan, A. Stanishevsky, J. Melngailis, E.D. Williams, and Ramamoorthy Ramesh. "Nanoscale electromechanical phenomena in ferroelectric thin films." Materials Research Society Symposium - Proceedings. Vol. 655. 2001. XVI-XVII.
Alpay, S.P., A.S. Prakash, S. Aggarwal, Ramamoorthy Ramesh, A.L. Roytburd, P. Shuk, and M. Greenblatt. "Polydomain structure of epitaxial PbTiO3 films on MgO." Materials Research Society Symposium - Proceedings. Vol. 493. MRS, Warrendale, PA, United States, 1998. 111-116.
Alpay, S.P., V. Nagarajan, L.A. Bendersky, M.D. Vaudin, S. Aggarwal, Ramamoorthy Ramesh, and A.L. Roytburd. "The stress state and domain structure of epitaxial PbZr0.2Ti0.8O3 films on (001) SrTiO3 with and without la0.5r0.5CoO3 electrode layer." Materials Research Society Symposium - Proceedings. Vol. 541. 1999. 357-362.
Journal Article
Nagarajan, V., C.S. Ganpule, H. Li, L. Salamanca-Riba, A.L. Roytburd, E.D. Williams, and Ramamoorthy Ramesh. "Control of domain structure of epitaxial PbZr0.2Ti0.8O3 thin films grown on vicinal (001) SrTiO3 substrates." Applied Physics Letters 79 (2001) 2805-2807.
Li, H., A.L. Roytburd, S.P. Alpay, T.D. Tran, L. Salamanca-Riba, and Ramamoorthy Ramesh. "Dependence of dielectric properties on internal stresses in epitaxial barium strontium titanate thin films." Applied Physics Letters 78 (2001) 2354-2356.
Canedy, C.L., H. Li, S.P. Alpay, L. Salamanca-Riba, A.L. Roytburd, and Ramamoorthy Ramesh. "Dielectric properties in heteroepitaxial Ba0.6Sr0.4TiO3 thin films: Effect of internal stresses and dislocation-type defects." Applied Physics Letters 77 (2000) 1695-1697.
Ganpule, C.S., V. Nagarajan, S.B. Ogale, A.L. Roytburd, E.D. Williams, and Ramamoorthy Ramesh. "Domain nucleation and relaxation kinetics in ferroelectric thin films." Applied Physics Letters 77 (2000) 3275-3277.
Ma, Z., F. Zavaliche, L. Chen, J. Ouyang, J. Melngailis, A.L. Roytburd, V. Vaithyanathan, D.G. Schlom, T. Zhao, and Ramamoorthy Ramesh. "Effect of 90° domain movement on the piezoelectric response of patterned PbZr 0.2 Ti 0.8 O 3 SrTiO 3 Si heterostructures." Applied Physics Letters 87 (2005).
Nagarajan, V., C.S. Ganpule, B. Nagaraj, S. Aggarwal, S.P. Alpay, A.L. Roytburd, E.D. Williams, and Ramamoorthy Ramesh. "Effect of mechanical constraint on the dielectric and piezoelectric behavior of epitaxial Pb(Mg1/3Nb2/3)O3(90%)-PbTiO3(10%) relaxor thin films." Applied Physics Letters 75 (1999) 4183-4185.
Alpay, S.P., V. Nagarajan, L.A. Bendersky, M.D. Vaudin, S. Aggarwal, Ramamoorthy Ramesh, and A.L. Roytburd. "Effect of the electrode layer on the polydomain structure of epitaxial PbZr0.2Ti0.8O3 thin films." Journal of Applied Physics 85 (1999) 3271-3277.
Alpay, S.P., Ramamoorthy Ramesh, and A.L. Roytburd. "Effect of uniaxial stress fields on the domain selection of epitaxial ferroelectric films." Ferroelectrics 221 (1999) 245-250.
Ouyang, J., J. Slusker, I. Levin, D.-M. Kim, C.-B. Eom, Ramamoorthy Ramesh, and A.L. Roytburd. "Engineering of self-assembled domain architectures with ultra-high piezoelectric response in epitaxial ferroelectric films." Advanced Functional Materials 17 (2007) 2094-2100.
Li, J.-H., L. Chen, V. Nagarajan, Ramamoorthy Ramesh, and A.L. Roytburd. "Finite element modeling of piezoresponse in nanostructured ferroelectric films." Applied Physics Letters 84 (2004) 2626-2628.
Chen, L., J. Ouyang, C.S. Ganpule, V. Nagarajan, Ramamoorthy Ramesh, and A.L. Roytburd. "Formation of 90° elastic domains during local 180° switching in epitaxial ferroelectric thin films." Applied Physics Letters 84 (2004) 254-256.
Ganpule, C.S., V. Nagarajan, B.K. Hill, A.L. Roytburd, E.D. Williams, Ramamoorthy Ramesh, S.P. Alpay, A. Roelofs, R. Waser, and L.M. Eng. "Imaging three-dimensional polarization in epitaxial polydomain ferroelectric thin films." Journal of Applied Physics 91 (2002) 1477-1481.
Ouyang, J., Ramamoorthy Ramesh, and A.L. Roytburd. "Intrinsic effective piezoelectric coefficient e 31,f for ferroelectric thin films." Applied Physics Letters 86 (2005) 1-3.
Roytburd, A.L., S.P. Alpay, V. Nagarajan, C.S. Ganpule, S. Aggarwal, E.D. Williams, and Ramamoorthy Ramesh. "Measurement of internal stresses via the polarization in epitaxial ferroelectric films." Physical Review Letters 85 (2000) 190-193.
Chen, L., V. Nagarajan, Ramamoorthy Ramesh, and A.L. Roytburd. "Nonlinear electric field dependence of piezoresponse in epitaxial ferroelectric lead zirconate titanate thin films." Journal of Applied Physics 94 (2003) 5147-5152.
Ouyang, J., S.Y. Yang, L. Chen, Ramamoorthy Ramesh, and A.L. Roytburd. "Orientation dependence of the converse piezoelectric constants for epitaxial single domain ferroelectric films." Applied Physics Letters 85 (2004) 278-280.
Ouyang, J., D.M. Kim, C.B. Eom, Ramamoorthy Ramesh, and A.L. Roytburd. "Orientation dependence of the intrinsic converse longitudinal piezoelectric constant for 0.67Pb(Mg1/3Nb2/3)O3-0. 33PbTiO3 ferroelectric films with a rhombohedral structure." Smart Materials and Structures 14 (2005) 524-528.
Ganpule, C.S., A.L. Roytburd, V. Nagarajan, B.K. Hill, S.B. Ogale, E.D. Williams, Ramamoorthy Ramesh, and J.F. Scott. "Polarization relaxation kinetics and 180° domain wall dynamics in ferroelectric thin films." Physical Review B - Condensed Matter and Materials Physics 65 (2002) 141011-141017.
Ganpule, C.S., A.L. Roytburd, V. Nagarajan, B.K. Hill, S.B. Ogale, E.D. Williams, Ramamoorthy Ramesh, and J.F. Scott. "Polarization relaxation kinetics and 180° domain wall dynamics in ferroelectric thin films." Physical Review B - Condensed Matter and Materials Physics 65 (2002) 1-7.

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