A Raman study of phase transition in the (1−x)Pb(Zn_1/3Nb_2/3)O₃−xPbTiO₃ system

M. Iwata Applied Physics Department, Nagoya University, Nagoya, 464-8603, Japan

N. Tomisato Applied Physics Department, Nagoya University, Nagoya, 464-8603, Japan

H. Orihara Applied Physics Department, Nagoya University, Nagoya, 464-8603, Japan

H. Ohwa Electric and Information Department, Gifu University, Gifu, 501-1193, Japan

N. Yasuda Electric and Information Department, Gifu University, Gifu, 501-1193, Japan

Y. Ishibashi Department of Communications, Aichi Shukutoku University, Nagakute-cho, Aichi, 480-1197, Japan

Abstract

The temperature-concentration dependences of the Raman spectra in the (1−x)Pb(Zn^1/3Nb^2/3)O³O³-xPbTiO³ mixed crystal system were measured in the high temperature region above the Burns temperature. It was found that in the concentration range below x = 0.8, there are Raman active modes in the cubic phase and intensities of Raman lines decrease with increasing temperature. A finite region where Raman active modes are observed in the cubic phase was determined on the temperature-concentration phase diagram.

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A Raman study of phase transition in the (1−x)Pb(Zn_1/3Nb_2/3)O₃−xPbTiO₃ system

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A Raman study of phase transition in the (1−x)Pb(Zn1/3Nb2/3)O3−xPbTiO3 system

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A Raman study of phase transition in the (1−x)Pb(Zn_1/3Nb_2/3)O₃−xPbTiO₃ system