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Domain distributions in tetragonal Pb(Zr,Ti)O3 thin films probed by polarized Raman spectroscopy

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7 Author(s)
Osada, Minoru ; Advanced Materials Laboratory, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0044, Japan ; Nishida, Ken ; Wada, Syunshuke ; Okamoto, Shoji
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We have investigated polarized Raman spectra of (001)/(100)-oriented tetragonal epitaxial Pb(ZrxTi1-x)O3 (PZT) thin films (x=∼0.35) in which the volume fraction of the polar c domain is systematically varied from 4% to 96%. From polarization analyses using high epitaxial quality films, we have successfully isolated the A1 and B1 phonons from the E phonons, thus offering a distinctive evaluation of the c domains. As increasing c-domain volume, the A1(TO) modes linearly increase in their intensity. A remarkable correlation is found between the A1(1TO)-mode intensity and the c-domain volume for PZT films. We suggest that this correlation as well as the A1(1TO)-mode intensity provide a simple and useful probe for characterization of c-domain volume and ferroelectric properties in PZT-based devices.

Published in:

Applied Physics Letters  (Volume:87 ,  Issue: 23 )

Date of Publication:

Dec 2005

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