Effect of A-site substitution of calcium on Zr-rich lead zirconate titanate

被引：13

作者：

Huang, HT ^{[1
]}

Zhang, TS ^{[1
]}

Tien Oh, J ^{[1
]}

Hing, P ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Engn, Adv Mat Res Ctr, Singapore 639798, Singapore

来源：

FERROELECTRICS | 2002年 / 274卷

关键词：

PZT; ferroelectrics; pyroelectrics; dielectrics;

D O I：

10.1080/00150190213960

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Effect of calcium substitution on the A-site of Zr-rich lead zirconate titanate Pb(Zr0.94Ti0.06)O-3 and Pb(Zr0.92Ti0.08)O-3 is studied. It is found that the rhombohedral structure of Zr-rich lead zirconate titanate changes to tetragonal and finally to cubic with increasing amount of calcium substitution. Both the dielectric constant and the Curie temperature decrease with the substitution of calcium on the A-site of the ABO(3) perovskite structure. A pyroelectric current peak is observed which is resulted from the phase transition from the low temperature rhombohedral ferroelectric phase F-R(LT) to the high temperature F-R(HT) one. Small amount of calcium substitution increases the peak value and also shifts the peak position to higher temperatures. However, further increase in the calcium content lowers the peak value and finally smears out the peak.

引用

页码：55 / 65

页数：11

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