硅酸盐学报2017，Vol.45Issue(3)：339-345,7.DOI:10.14062/j.issn.0454-5648.2017.03.03
MnCO3掺杂对BMN陶瓷结构及介电性能的影响
Effect of MnCO3 Doping on Structure and Dielectric Properties of BMN Ceramics
摘要
Abstract
MnCO3-doped Ba(Mg1/3Nb2/3)O3(BMN) microwave dielectric ceramics were preparedvia a solid-phase reaction sintering process. The effect of MnCO3-doped amount on the sintering temperature, microstructures and dielectric properties of BMN ceramics was investigated. The results indicate that MnCO3 addition can lower the sintering temperature of the ceramics and improve the microwave dielectric properties. When MnCO3 is 4%, the sintering temperature decreases from 1550 to 1250℃. The apparent density of MnCO3-doped BMN microwave dielectric ceramic is 6.36g/cm3, the relative theoretical density is 98.6%. This ceramic possesses the superior microwave dielectric properties (i.e., high relative dielectric constant of 31.4, high quality factor plus resonant frequency of 99200GHz (8GHz), and near-zero temperature coefficient of resonant frequency valueof 3×10–7/℃.关键词
掺杂/微波介质陶瓷/介电性能Key words
doping/microwave dielectric ceramics/dielectric properties分类
信息技术与安全科学引用本文复制引用
彭森,吴孟强,黄同成,许建明,罗高峰,周建华,余建坤,张树人..MnCO3掺杂对BMN陶瓷结构及介电性能的影响[J].硅酸盐学报,2017,45(3):339-345,7.基金项目
国家自然科学基金(61135004) （61135004）
湖南省自然科学基金(14JJ7075, 15JJ2130) （14JJ7075, 15JJ2130）
湖南省教育厅基金(13A091,14A129,07C681) （13A091,14A129,07C681）
湖南省高校科技创新团队支持计划资助. （）
