Microwave dielectric properties of the (1−x)(Mg0.95Zn0.05)TiO3−x(Ca0.8Sm0.4/3)TiO3 temperature stable ceramics
Microwave dielectric properties of the (1−x)(Mg0.95Zn0.05)TiO3−x(Ca0.8Sm0.4/3)TiO3 temperature stable ceramics
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DOI：
10.1016/j.matlet.2014.06.105
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发表时间：
2014-10
影响因子：
3
通讯作者：
Yi-ding Zhang;Di Zhou;Jing Guo;Haihong Xi;Bin He
中科院分区：
文献类型：
--
作者：
Yi-ding Zhang;Di Zhou;Jing Guo;Haihong Xi;Bin He
采用混合氧化物法制备的（1−x）（Mg0.95Zn0.05）TiO 3 −x（Ca0.8Sm0.4/3）TiO 3陶瓷具有优良的介电性能。将（Mg0.95Zn0.05）TiO 3与（Ca0.8Sm0.4/3）TiO 3混合，得到两相陶瓷体系，并获得温度稳定的材料。当x值在0.10到0.14之间变化时，温度系数（以TCF或τf表示）在+16.96 ppm/°C到−8.80 ppm/°C之间变化。当x =0.12时，1300 °C烧结的0.88（Mg0.95Zn0.05）TiO 3 -0.12（Ca0.8Sm0.4/3）TiO 3陶瓷表现出优异的微波介电性能，其相对介电常数（εr）约为23，品质因数（Q×f）值约为60，000 GHz（7.7 GHz），τf约为4.38 ppm/°C。X射线衍射和扫描电子显微镜也包括在我们的工作中，以帮助识别和分析陶瓷的微观结构。
The ceramic system of (1−x)(Mg0.95Zn0.05)TiO3−x(Ca0.8Sm0.4/3)TiO3prepared by mixed oxide route has been found to possess excellent dielectric properties. (Mg0.95Zn0.05)TiO3was combined with (Ca0.8Sm0.4/3)TiO3to obtain a two-phase ceramic system and to achieve a temperature-stable material. Asxvalue varied from 0.10 to 0.14, the temperature coefficient (indexed as TCF orτf) ranged from +16.96 ppm/°C to −8.80 ppm/°C. Atx=0.12, the 0.88(Mg0.95Zn0.05)TiO3–0.12(Ca0.8Sm0.4/3)TiO3ceramic sintered at 1300 °C showed excellent microwave dielectric properties with a relative dielectric constant (εr) ~23, a quality factor (Q×f) value ~60,000 GHz ( at 7.7 GHz), and aτf~4.38 ppm/°C. X-ray diffraction and scanning electron microscopy were also included in our work to help identify and analyze the microstructure of the ceramics.