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Raman Spectra of MOCVD-Grown Ferroelectric PbTiO3 Thin Films

Published online by Cambridge University Press:  15 February 2011

Z. C. Feng ,
B. S. Kwak ,
A. Erbil  and
L. A. Boatner
Z. C. Feng
Affiliation:
Department of Physics, National University of Singapore, S0511, Singapore
B. S. Kwak
Affiliation:
School of Physics, Georgia Institute of Technology, Atlanta, GA 30332; Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
A. Erbil
Affiliation:
School of Physics, Georgia Institute of Technology, Atlanta, GA 30332;
L. A. Boatner
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
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Abstract

Lead titanate (PbTiO3) has been grown on a variety of substrates by using the metalorganic chemical vapor deposition (MOCVD) technique. The substrates employed included Si, GaAs, MgO, fused-quartz, sapphire, and KTaO3. Raman spectra from these heterostructures are presented. All of the films exhibited the strong, narrow spectral features characteristic of PbTiO3 perovskite-oxide crystals and indicative of high crystalline quality. Temperature behaviors of the Raman modes, including the socalled “soft-mode”, were studied. A “difference-Raman” technique was used to distinguish the contributions of the PbTiO3 film and the KTaO3 single-crystal substrate.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 335: Symposium Y – Metal-Organic Chemical Vapor Deposition of Electronic Ceramics , 1993 , 75
Copyright
Copyright © Materials Research Society 1994

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