Low temperature sintering and microwave dielectric properties of 0.4Nd(Zn0.5Ti0.5)O3-0.6Ca0.61Nd0.26TiO3 ceramics with BaCu(B2O5) additive

作者：Li, Jiamao; Yao, Bo; Xu, Dechao; Huang, Zhixing; Wang, Zijian; Wu, Xin; Fan, Chuangang^*

来源：Journal of Alloys and Compounds, 2016, 663: 494-500.

DOI：10.1016/j.jallcom.2015.12.132

• Microwave ceramics
• BaCu(B2O5)
• Low temperature sintering
• Dielectric properties

0.4Nd(Zn0.5Ti0.5)O-3-0.6Ca(0.61)Nd(0.26)TiO(3) (NZT-CNT) ceramics were prepared by the conventional solid-state ceramic route with 1-7 wt% BaCu(B2O5) (BCB) powders as additives. The presence of BCB effectively reduced the sintering temperature of NZT-CNT ceramics due to the formation of a liquid phase at a relatively low temperature during sintering. Meanwhile, the addition of BCB powders inhibited the grain growth of NZT-CNT ceramics and resulted in a fine microstructure. Compared with undoped NZT-CNT ceramics, up to 3 wt% BCB additive induced the grain from spherical to square shape. By adding small amounts of BCB additive, NZT-CNT ceramics exhibited low sintering temperature and good microwave dielectric properties. Especially, the optimum microwave dielectric properties for a 5 wt % BCB-doped NZT-CNT ceramic sintered at 1050 degrees C for 4 h were obtained: epsilon(r) = 45.6, Q x f = 38,230 GHz (f = 7.35 GHz) and tau(f) = -8.4 ppm/degrees C.

• 出版日期2016-4-5
• 单位安徽工业大学