Tetragonal Tungsten Bronzes in Ba(M2+ 1/3Nb2/3)O3 Microwave Ceramics
Tetragonal Tungsten Bronzes in Ba(M2+ 1/3Nb2/3)O3 Microwave Ceramics
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Ba(M2 1/3Nb2/3)O3 微波陶瓷中的四方钨青铜
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
T. Kolodiazhnyi
中科院分区：
文献类型：
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作者：
O. Ovchar;D. Durilin;A. Belous;V. Porokhonskyy;B. Jaňcar;T. Kolodiazhnyi
首次在射频和微波范围内测量了缺钡高Q钙钛矿相Ba（M2+ 1/3 Nb 2/3）O3中形成的9：1：7 TTB相Ba_9 M_2 + Nb_（14）O_（45）（M = Co，Mg，Zn）的介电性能。低温介电弛豫发现在Ba 9 M2 + Nb 14 O 45被证明给他们的微波介电损耗的强贡献。测量的数据用于钙钛矿-TTB复合材料的Q因子的简单模拟。计算的参数已被证明是对应以及测量数据。
For the first time, the dielectric properties of the 9:1:7 TTB phases Ba9M2+Nb14O45 (M = Co, Mg, Zn) which form in Ba-deficient high-Q perovskite niobates Ba(M2+ 1/3Nb2/3)O3 have been measured in the radio-frequency and microwave range. The low-temperature dielectric relaxation found in Ba9M2+Nb14O45 was shown to give a strong contribution into their microwave dielectric loss. The measured data were used for a simple simulation of the Q-factor of a perovskite-TTB composite. Calculated parameters have been shown to correspond well to the measured data.