Effects of Sintering Process on Microstructure and Microwave Dielectric Properties of Ba(Co1/3Nb2/3)O3 Ceramics

被引：6
|
作者：
Wang, Zhefei [1 ]
Wu, Jiajia [2 ]
Wang, Lixi [1 ]
Fu, Zhenxiao [3 ]
Zhang, Qitu [1 ]
机构：
[1] Nanjing Tech Univ, Coll Mat Sci & Engn, Nanjing 210009, Jiangsu, Peoples R China
[2] Sinoma Technol & Equipment Grp Co Ltd, Nanjing Branch, Nanjing, Jiangsu, Peoples R China
[3] Guangdong Fenghua Adv Technol Co Ltd, Guangzhou 526020, Guangdong, Peoples R China
来源：
ELECTRONIC MATERIALS LETTERS | 2014年 / 10卷 / 06期
关键词：
microwave dielectric; Ba(Co1/3Nb2/3)O-3 ceramic; sintering process; high Q x f value; BA(ZN1/3TA2/3)O-3; TEMPERATURE; FREQUENCIES; RESONATORS;
D O I：
10.1007/s13391-014-3350-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ba(Co1/3Nb2/3)O-3 (BCN) ceramics were prepared using a conventional solid-state route. Effects of sintering on microstructure and microwave dielectric properties of Ba(Co1/3Nb2/3)O-3 ceramics were systematically investigated. Appropriate sintering temperature could restrain the evaporation of CoO and the formation of Nb-rich phase. The dielectric constants and temperature coefficients of resonant frequency changed slightly with the variation in sintering temperatures. The high Q x f value with prolonged sintering time was related to the improvement of 1: 2 ordered arrangement in the B site, rather than the compactness of ceramics. Excellent microwave dielectric properties (epsilon(r) = 32.6, Q x f = 86857 GHz, tau(f) = -14 ppm/degrees C) were obtained in the Ba(Co1/3Nb2/3)O-3 ceramics sintered at 1380 degrees C for 12 h.
引用
收藏
页码：1121 / 1125
页数：5
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