PIEZOELECTRIC, PYROELECTRIC AND DIELECTRIC-PROPERTIES OF LANTHANUM MODIFIED LEAD ZIRCONATE TITANATE CERAMICS

被引：29
|
作者：
ARORA, AK [1 ]
TANDON, RP [1 ]
MANSINGH, A [1 ]
机构：
[1] NATL PHYS LAB,DIV MAT,NEW DELHI 110012,INDIA
来源：
FERROELECTRICS | 1992年 / 132卷 / 1-4期
关键词：
PIEZOELECTRIC; PYROELECTRIC; DIELECTRIC; TRANSITION TEMPERATURE; CURIE-WEISS LAW; DIFFUSE PHASE TRANSITION;
D O I：
10.1080/00150199208009067
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The piezo-, pyro- and dielectric properties of lanthanum modified lead zirconate titanate (PLZT) ceramics has been investigated as a function of Zr/Ti ratio for 4% La, The pyroelectric coefficients show a minima at the morphotropic phase boundary. The pyroelectric and dielectric properties show different transition temperatures. The transition temperatures from dielectric measurements are frequency dependent. A non-linear Curie-Weiss law is observed for all the compositions studied, and also a Debye type relaxation occurs near the transition temperature region. The observed phase transition from ferroelectric phase to paraelectric is discussed in light of the diffuse phase transition.
引用
收藏
页码：9 / 25
页数：17
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