CORRELATION BETWEEN DIELECTRIC-PROPERTIES AND NANOSTRUCTURE IN A PB(IN1/2NB1/2)O3 CERAMIC

被引：8

作者：

ELISSALDE, C

WEILL, F

RAVEZ, J

机构：

[1] Laboratoire de Chimie du Solide, CNRS, Université de Bordeaux I, 33405 Talence Cedex

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 1994年 / 25卷 / 01期

关键词：

D O I：

10.1016/0921-5107(94)90206-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Dielectric measurements performed on a Pb(In1/2Nb1/2)O3 ceramic revealed behaviour strongly dependent on both the frequency and temperature. A high frequency (HF) relaxation is observed over the entire temperature range (200-450 K) at frequencies close to 10(8) Hz. There is a minimum of the relaxation frequency f(r)(HF) close to T(m), the temperature of the maximum of epsilon(r)'. A second relaxation occurs below T(m), at lower frequency, with f(r)(LF) values decreasing on cooling. In addition, very small ordered nanoregions were observed by transmission electron microscopy. This is in agreement with a high degree of disorder arising probably from the ''fast firing'' process used for ceramic preparation. The dielectric response was correlated with the nanostructure.

引用

页码：85 / 91

页数：7

共 10 条

[1]

BONNEAU P, 1990, THESIS U PARIS 6

[2] HIGH-FREQUENCY DIELECTRIC-RELAXATION IN LEAD MAGNESIUM NIOBATE CERAMICS [J].