Microstructure and antiferroelectric-like behavior of PbxSr1-xTiO3 ceramics

被引：19

作者：

Chen, Hongwei ^{[1
]}

Yang, Chuanren ^{[1
]}

Zhang, Jihua ^{[1
]}

Pei, Yafang ^{[1
]}

Zhao, Zhen ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 486卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Lead strontium titanate ceramics; Crystal structure; Antiferroelectric-like behavior; X-ray diffraction; Hysteresis loop; FERROELECTRIC/ANTIFERROELECTRIC LAYERED CERAMICS; THIN-FILMS; DIELECTRIC-PROPERTIES; CHEMICAL METHOD; SYSTEM;

D O I：

10.1016/j.jallcom.2009.07.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The crystalline structures of PbxSr1-xTiO3 ceramics with x = 0.2-0.8 were investigated. The a- and c-axis lattice constants at room temperature were found not to be equal, corresponding to tetragonal phase when x >= 0.45, consistent with the X-ray diffraction spectra. The hysteresis loops of PbxSr1-xTiO3 ceramics were measured in different conditions, including different Pb/Sr ratio, excess Pb, sintering temperature, and maximum external electric field. It is found that the PST ceramics for x = 0.40 and 0.45 exhibit antiferroelectric-like behavior. For Pb0.45Sr0.55TiO3 ceramics, the antiferroelectric-like behavior enhanced as sintering temperature and maximum external electric field increased. Moreover, increasing excess lead content leads to abnormal hysteresis loops. The anti ferroelectric-like behavior may be described in terms of the strongly stressed hybrid structure, domain pinning and oxygen vacancy. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：615 / 620

页数：6

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