PHASE TRANSITIONS, PIEZOELECTRIC AND PYROELECTRIC PROPERTIES OF KTa1-xNbxO3CERAMICS (x=0.3 AND 0.4)

被引：27

作者：

Khemakhem, H. ^{[1
,2
]}

von der Muehll, R. ^{[1
]}

Ravez, J. ^{[1
]}

Daoud, A. ^{[2
]}

机构：

[1] Inst Chim Matiere Condensee Bordeaux, F-33608 Pessac, France

[2] ENIS, Lab Etat Solide, Sfax 3038, Tunisia

来源：

FERROELECTRICS | 1996年 / 188卷

关键词：

Ceramic; pyroelectric; piezoelectric;

D O I：

10.1080/00150199608244882

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The successive phase transitions of KTa(1-x)Nb(x)O(3) (x = 0.3 and 0.4) (KTN) ceramics have been investigated by various techniques including DTA, dielectric, piezoelectric and pyroelectric measurements from 100 to 450 K. In this temperature range, all the phase transitions have been detected by pyroelecmc measurements. All the phase transitions in KTa(0.6)Nb(0.4)O(3) were detected by piezoelectric measurements as a function of temperature. The d(31) piezoelectric coefficient presents around T(c) a maximum value (of 20.10-(12) C/N) The DTA, dielectric and pyroelectric measurements allow to deduce that the ferroelectric-paraelectric phase transition is probably of first order for KTa(0.6)Nb(0.4)O(3).

引用

页码：85 / 93

页数：9

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