ULTRASONIC STUDY OF THE FERROELECTRIC PHASE-TRANSITION IN RBD2PO4

被引：1

作者：

HU, Z

GARLAND, CW

GONZALO, JA

机构：

[1] MIT,CTR MAT SCI & ENGN,CAMBRIDGE,MA 02139

[2] C4 UNIV AUTONOMA MADRID,DEPT OPT & ESTRUCTURA MAT,E-28049 MADRID,SPAIN

来源：

FERROELECTRICS | 1990年 / 112卷

关键词：

ULTRASONICS; PHASE TRANSITION; ELASTICITY; CRITICAL RELAXATION; DEUTERATION;

D O I：

10.1080/00150199008012797

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The velocity and attenuation of shear elastic waves have been measured in the paraelectric phase of tetragonal RbD,PO,. The softening of the elastic stiffness C666 can be well described by a Curie-Weiss law. The polarization relaxation time t exhibits conventional critical behavior: [formula omitted] Both t. and Ti are very sensitive to deuteration. The values T, = 229.1 K and t. = 2.61 x 10 s K were obtained for a RbD,POj crystal that is 87 percent deuterated, whereas Tc = 147 K and t. = 0.3 x 10-[o]'s K have been reported for RblI;PO4. © 1990, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：217 / 223

页数：7

共 22 条

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