Brillouin scattering study on relaxor ferroelectric Pb(Zn1/3Nb2/3)O3

被引：28

作者：

Gorouya, Y

Tsujimi, Y ^{[1
]}

Iwata, M

Yagi, T

机构：

[1] Hokkaido Univ, Res Inst Elect Sci, Sapporo, Hokkaido 0600812, Japan

[2] Nagoya Inst Technol, Nagoya, Aichi 4668555, Japan

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 07期

关键词：

D O I：

10.1063/1.1603340

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The 90degrees Brillouin scattering experiment has been performed on a Pb(Zn1/3Nb2/3)O-3 single crystal. The frequency shift and linewidth of the c(33) pure longitudinal acoustic mode and the c(44) pure transverse mode show bending anomalies near T-m=397 K, at which the low-frequency dielectric constant epsilon has a maximum value. In addition to the acoustic modes, a relaxational mode is found in the form of a central peak. The relaxation time tau of the mode has a temperature dependence similar to that of epsilon and shows a broad peak anomaly around T-m. The temperature dependence of tau can be analyzed by a modified superparaelectric model. (C) 2003 American Institute of Physics.

引用

页码：1358 / 1360

页数：3

共 12 条

[1]

BOKOV VA, 1961, FIZ TVERD TELA, V2, P2428

[2] Brillouin and dielectric studies of the phase transition in the relaxor ferroelectric Pb(Ni1/3Nb2/3)O3 [J].