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Zn和Nb对BaO-TiO₂系统微波陶瓷介电性能的影响

Effects of Zn/Nb Dopant on Dielectric Properties of BaO-TiO₂ Microwave Ceramics

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【Author】 LIU Dan-dan1, WU Shun-hua1, ZHAO Yu-shuang1, XING Lei2, XONG Wen3 (1. Institute of Electronics and Information Engineering, Tianjin University, Tianjin 300072, China; 2.Chaozhou Sanhuan Electronics Co. Ltd. Chaozhou 515646, China;3. Hongming Electronics Co. Ltd., Chengdu 610058, China)

【机构】天津大学电子信息工程学院；潮州三环电子有限公司；成都宏明电子股份有限公司天津300072；天津300072；广东潮州515646；四川成都610058；

【摘要】研究了添加ZnO 和Nb2O5的BaO-TiO2系统微波陶瓷。XRD表明其主晶相是Ba2Ti9O20(B2T9)/BaTi4O9(BT4)。加入ZnO 和Nb2O5,由Zn2+ 和Nb5+共同取代Ti4+,作为施主受主杂质,达到电价平衡,降低了烧结温度,改进了介电性能。该系统微波瓷料既可用于制造滤波器,也可用于制造多层陶瓷电容器(MLCC)。实验表明其介电性能如下:εr =37、Q =14 000、αC = 10×106℃1(1 MHz)。更多还原

【Abstract】 ZnO and Nb2O5 doped microwave ceramics of BaO-TiO2 were investigated. XRD showed that the crystal phases are mainly Ba2Ti9O20(B2T9)/BaTi4O9(BT4). To substitute for Ti4+, ZnO and Nb2O5 were added as donor and receiver ions. Thus, balance of electric valence was obtained, sintering temperature lowed and dielectric property improved. The ceramic material can be used for filters and MLCCs. εr is 37, Q 14 000 andαC 10 106℃6 at 1 MHz.更多还原