Ba4LiNb3−xTaxO12 (x=0–3): A Series of High‐Q Microwave Dielectrics from the Twinned 8H Hexagonal Perovskites
Ba4LiNb3−xTaxO12 (x=0–3): A Series of High‐Q Microwave Dielectrics from the Twinned 8H Hexagonal Perovskites
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DOI：
10.1111/j.1551-2916.2009.03548.x
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发表时间：
2010-05
影响因子：
3.9
通讯作者：
L. Fang;Chunchun Li;X. Peng;Changzheng Hu;Bo-lin Wu;Huangfu Zhou
中科院分区：
文献类型：
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作者：
L. Fang;Chunchun Li;X. Peng;Changzheng Hu;Bo-lin Wu;Huangfu Zhou
采用固相反应法合成了Ba 4LiNb 3 − xTaxO 12（x=0-3）体系中的一系列孪晶8H六方钙钛矿结构。Ba 4LiNb 3 − xTaxO 12固溶体在整个x值范围内均为单相。该陶瓷具有良好的微波介电性能，其相对介电常数ε r = 28-37，品质因数Q×f = 37 000-104 000 GHz，谐振频率温度系数τf =+25 ~+65 ppm/°C。
A series of the twinned 8H hexagonal perovskites in the Ba4LiNb3−xTaxO12 (x=0–3) system were synthesized by the conventional solid-state reaction method. Ba4LiNb3−xTaxO12 solid solutions were single phase in the whole range of x values. The ceramics exhibit perfect microwave dielectric properties with relative permittivity, ɛr∼28–37, high quality factor, Q×f∼37 000–104 000 GHz, and temperature coefficient of resonant frequency, τf∼+25–+65 ppm/°C.