DIELECTRIC-PROPERTIES OF PB(FE1/2NB1/2)O-3-BASED CERAMICS

被引：33

作者：

ICHINOSE, N

KATO, N

机构：

[1] Department of Materials Science and Engineering, School of Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, 169

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1994年 / 33卷 / 9B期

关键词：

LEAD IRON NIOBATE; RELAXER FERROELECTRIC; DIELECTRIC CONSTANT; PYROELECTRIC CURRENT; SPACE-CHARGE POLARIZATION;

D O I：

10.1143/JJAP.33.5423

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A broad peak above the Curie temperature of lead iron niobate Pb(Fe1/2Nb1/2)O-3 may be related to interfaces at the grain boundary. The origin of the anomalous second peak is not clear. The Sr-substituted lead iron niobate Pb1-xSrx(Fe1/2Nb1/2)O-3 ceramics were prepared for the purpose of investigating this anomaly. The dielectric anomaly and pyroelectric current in this system at around 200 degrees C may be explained by the space-charge polarization in the interfaces of the grain boundary due to ionic valence changes from Fe3+ to Fe2+ in the B-site of the perovskite structure.

引用

页码：5423 / 5426

页数：4