Effects of Mn-Addition on the Microstructure and Ferroelectric Properties of High-Temperature CaBi2Nb2O9 Ceramics

被引：7

作者：

Tian, Xiaoxia ^{[1
]}

Qu, Shaobo ^{[1
,2
]}

Zhou, Yu ^{[1
]}

Xu, Baoxi ^{[3
]}

Xu, Zhuo ^{[2
]}

机构：

[1] Air Force Engn Univ, Coll Sci, Xian 710051, Shaanxi, Peoples R China

[2] Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab, Minist Educ, Xian 710051, Shaanxi, Peoples R China

[3] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS | 2013年 / 23卷 / 04期

基金：

中国国家自然科学基金;

关键词：

High temperature; Mn-added CaBi2Nb2O9; Microstructure; Ferroelectric properties; PIEZOELECTRIC PROPERTIES;

D O I：

10.1007/s10904-013-9860-7

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

High temperature ferroelectric ceramics CaBi2Nb2O9 + x wt% MnCO3 (CBNO-x) are prepared by conventional sintering method. The microstructures and ferroelectric properties are studied. The Mn-added CBNO-based ceramics have a single Aurivillius phase structure. Nearly isotropic grains are obtained and the grains become larger with the increase of MnCO3 addition. The Curie temperature T (c) decreases slightly with the increase of MnCO3 addition. The relative dielectric constant, dielectric loss, and the P-E hysteresis loop measurements indicate that Mn ions creates "soft" and "hard" doping effects simultaneously. Superior polarization performance (2P (r) of 3.0 mu C/cm(2) and 2E (c) of 40.2 kV/cm) is obtained for the CaBi2Nb2O9-0.375 wt% MnCO3 ceramics.

引用

页码：877 / 880

页数：4

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