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A novel temperature stable Mg0.5Ti0.5NbO4-based microwave dielectric material
Materials Science and Engineering: B ( IF 3.6 ) Pub Date : 2019-10-11 , DOI: 10.1016/j.mseb.2019.114424
Liping Zhao , Peng Liu , Zhifen Fu

A novel temperature stable Mg0.5Ti0.5NbO4-based microwave dielectric ceramic was fabricated by using the nanopowders (317 nm) derived from high energy ball milling (HEBM) method. An orthorhombic ixiolite structure was detected for Mg0.5Ti0.5NbO4 ceramics coupled with a minor of second phase Mg0.167Nb0.33Ti0.5O2. With increasing sintering temperature, the amount of Mg0.167Nb0.33Ti0.5O2 phase decreased as well as the dielectric constant (εr) and temperature coefficient of resonant frequency (τf). The ceramics sintered at 1140 °C for 4 h exhibited optimum microwave dielectric properties εr = 38.8, Q × f = 19,710 GHz and τf = 1.3 ppm/°C.



中文翻译:

一种新型的温度稳定的Mg 0.5 Ti 0.5 NbO 4基微波介电材料

利用高能球磨(HEBM)法制得的纳米粉(317 nm),制备了新型的温度稳定的Mg 0.5 Ti 0.5 NbO 4基微波介电陶瓷。对于Mg 0.5 Ti 0.5 NbO 4陶瓷和少量的第二相Mg 0.167 Nb 0.33 Ti 0.5 O 2,检测到斜方晶石英晶石结构。随着烧结温度,Mg量0.167的Nb 0.33的Ti 0.5 ø 2相下降以及介电常数(ε ř)和谐振频率(的温度系数τ ˚F)。在1140烧结陶瓷℃下4小时表现出最佳微波介电性能ε - [R  = 38.8,Q×˚F  = 19710 GHz和τ ˚F  = 1.3ppm的/℃。

更新日期:2019-10-11
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