Coupling of soft modes in Sr2Nb2O7

被引：6

作者：

Ito, K ^{[1
]}

Horikoshi, T ^{[1
]}

Ohi, K ^{[1
]}

机构：

[1] Waseda Univ, Sch Sci & Engn, Dept Phys, Shinjuku Ku, Tokyo 169, Japan

来源：

FERROELECTRICS | 1997年 / 203卷 / 1-4期

关键词：

Sr2Nb2O7; Raman scattering; mode coupling; A(1) LO and TO modes;

D O I：

10.1080/00150199708012846

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Raman scattering spectra of Sr2Nb2O7 were observed. An anticrossing between the soft mode associated with the ferroelectric phase transition at 1615 K and that associated with the incommensurate phase transition at 488 K was observed around 70 K. Spectra of the A(l) longitudinal modes and the A(f) transverse modes were observed at 523 K in a - c(bb)a + c and - a + c(bb)a + c, respectively.

引用

页码：201 / 209

页数：9

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