Low‐Fired (Zn,Mg)TiO3 Microwave Dielectrics
Low‐Fired (Zn,Mg)TiO3 Microwave Dielectrics
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DOI：
10.1111/j.1151-2916.1999.tb02268.x
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发表时间：
2004-12
影响因子：
3.9
通讯作者：
Hyo Tae Kim;S. Nahm;J. Byun;Yoonho Kim
中科院分区：
文献类型：
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作者：
Hyo Tae Kim;S. Nahm;J. Byun;Yoonho Kim
采用半化学合成路线和微珠研磨技术制备了由 (Zn1-xMgx)TiO3 (x= 0 至 x= 0.5) 组成的介电陶瓷，该介电陶瓷具有低烧结温度和良好的微波性能。 X射线衍射和热分析结果表明，随着镁含量的增加，六方(Zn,Mg)TiO3的相稳定区域扩展到更高的温度。该系统的介电性能表现出对烧结条件的显着依赖性，特别是在相分解温度附近。从950°C开始，随着相组成从六方(Zn,Mg)TiO3转变为(Zn,Mg)2TiO4和金红石两相，出现温度补偿特性。 950°C 时，零温度系数 (tauf) 的镁含量约为 3 mol%；然而，由于分解温度的变化，tauf随着烧结温度的升高而增加。
A dielectric ceramic comprised of (Zn1-xMgx)TiO3 (x= 0 to x= 0.5) with low sintering temperature and promising microwave properties was prepared by applying a semichemical synthesis route and a microbeads milling technique. X-ray diffractometry and thermal analyses results indicated that the phase stability region of the hexagonal (Zn,Mg)TiO3 extended to higher temperatures as the amount of magnesium increased. The dielectric properties in this system exhibited a significant dependence on the sintering conditions, especially near the phase decomposition temperature. From 950°C, the temperature compensation characteristics occurred as the phase composition changed from hexagonal (Zn,Mg)TiO3 to two phases: (Zn,Mg)2TiO4 and rutile. The magnesium content for zero temperature coefficient (tauf) was ~3 mol% at 950°C; however, tauf increased with the sintering temperatures because of the shift of the decomposition temperature.