RAMAN MEASUREMENTS OF THE FERROELECTRIC BA0.4SR0.6NB2O6

被引：18

作者：

BURNS, G

DACOL, FH

NEURGAONKAR, RR

BHALLA, AS

GUO, R

机构：

[1] PENN STATE UNIV,MAT RES LAB,UNIVERSITY PK,PA 16802

[2] ROCKWELL INT CORP,CTR SCI,THOUSAND OAKS,CA 91360

来源：

FERROELECTRICS | 1990年 / 108卷

关键词：

D O I：

10.1080/00150199008018755

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using Raman spectroscopy, we have measured the A1 (TO) and E(TO) phonons in the tungsten bronze structured ferroelectric Ba0.4Sr0.6Nb2O6 (BSN). We observe phonon anomalies associated with Tc and also with a temperature ≈425°C. The latter is in the region where index of refraction measurements indicate the onset of a local polarization. By quenching the crystal from high temperatures, Tccan be shifted. We find that the phonon anomalies shift corresponding to the new Tc values. © 1990, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：189 / 193

页数：5

共 8 条

[1] MEASUREMENTS OF STRAIN AND THE OPTICAL INDEXES IN THE FERROELECTRIC BA0.4SR0.6NB2O6 - POLARIZATION EFFECTS [J].