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Investigation of Temperature and Composition Dependence of Relaxor Ferroelectric (1-x)PZN :xPT Using Micro-Raman Spectroscopy

Published online by Cambridge University Press:  16 February 2011

S. Gupta ,
R.S. Katiyar  and
A. S. Bhalla
S. Gupta
Affiliation:
Department of Physics, University of Puerto Rico, P.O Box 23343, Río Piedras, PR 00931
R.S. Katiyar
Affiliation:
Department of Physics, University of Puerto Rico, P.O Box 23343, Río Piedras, PR 00931
A. S. Bhalla
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
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Abstract

Micro-Raman spectra of relaxor ferroelectric (RFE) in the (1-x)Pb(Zn1/3Nb2/3)O3 :xTiO3 solid solution series have been measured as a function of temperature (70-580K) and composition (x = 0.02, 0.085, and 0.11). Micro-Raman spectra have been recorded in frequency range of 30-1000cm-1 and have been analyzed for all the Raman modes observed in terms of integrated intensity, phonon width and phonon frequency position. No soft mode like behavior is observed in the measured frequency range. We do observe two multiple phase transitions at 67°C (340K) and 147°C (420K) for the composition ≤ 0.91PZN:09PT, but both the transitions are slightly diffused in nature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 547: Symposium DD – Solid-State Chemistry of Inorganic Materials II , 1998 , 145
Copyright
Copyright © Materials Research Society 1999

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