GLASSY POLARIZATION IN THE FERROELECTRIC TUNGSTEN BRONZE (BA,SR)NB2O6

被引：36

作者：

BHALLA, AS

GUO, R

CROSS, LE

BURNS, G

DACOL, FH

NEURGAONKAR, RR

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598

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

来源：

JOURNAL OF APPLIED PHYSICS | 1992年 / 71卷 / 11期

关键词：

D O I：

10.1063/1.350537

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report accurate temperature dependent measurements of optic indices of refraction, the birefringence, and the strain in the ferroelectric tungsten bronze crystals Ba0.25Sr0.75Nb2O6 and two compositions of (Ba2-xSrx)2(K1-yNay)2(NbO3)10. These results are compared to our previous results in Ba0.4Sr0.6Nb2O6. From the experimental data, it appears that far above the ferroelectric T(c), up to a temperature T(d), these crystals possess a local, randomly oriented polarization, P(d), with similar T(d) values, irrespective of their chemical composition and T(c). Various aspects of our understanding of the polarization behavior and other effects in this ferroelectric system are discussed.

引用

页码：5591 / 5595

页数：5

共 23 条

[1] FERROELECTRIC TUNGSTEN BRONZE-TYPE CRYSTAL STRUCTURES .3. POTASSIUM LITHIUM NIOBATE K(6-X-Y)LI(4+X)NB(10+Y)O30 [J].