Effects of Manganese on Highly Donor-Doped Barium Titanate Ceramics with Resistivity of Positive Temperature Coefficient

被引：4

作者：

Liu, Jianqiao ^{[1
]}

Jin, Guohua ^{[1
]}

Chen, Yuzhen ^{[2
]}

Zhai, Zhaoxia ^{[1
]}

机构：

[1] Dalian Maritime Univ, Coll Informat Sci & Technol, Dalian 116026, Liaoning, Peoples R China

[2] Dalian Maritime Univ, Dept Mat Sci & Engn, Dalian 116026, Liaoning, Peoples R China

来源：

MATERIALS SCIENCE-MEDZIAGOTYRA | 2020年 / 26卷 / 04期

基金：

中国国家自然科学基金;

关键词：

barium titanate; PTCR; electrical properties; manganese; thermistor; ELECTRICAL-PROPERTIES; DIELECTRIC-PROPERTIES; BATIO3; CERAMICS; PTCR CHARACTERISTICS; REDUCING ATMOSPHERE; SIO2; ADDITION; LIQUID-PHASE; BA/TI RATIO; REOXIDATION; MICROSTRUCTURE;

D O I：

10.5755/j01.ms.26.4.23523

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Highly donor-doped ceramics with composition of Ba0.984Y0.016TiO3 were prepared for thermistors with positive temperature coefficient of resistivity (PTCR) via a route of solid reaction, reducing sintering and aerial oxidation. The effects of Mn additive were investigated on the ceramic characteristics of composition, morphology and electrical properties. The Mn incorporation affected little on ceramic composition but resulted in an obvious change in ceramic morphology, which illustrated the average grain size of 1.16, 1.65 and 1.01 gm for Mn addition amount of 0, 0.0005 and 0.0010, respectively. The grain growth, together with the Mn additive, influenced the electrical properties of room temperature resistivity, PTCR jump, donor and acceptor densities as well as the depletion layer width.

引用

页码：457 / 462

页数：6

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