Novel low-firing microwave dielectric ceramics: BaMV2O7 (M=Mg, Zn)

Novel low-firing microwave dielectric ceramics: BaMV2O7 (M=Mg, Zn)
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新型低烧微波介质陶瓷:BaMV2O7(M=Mg、Zn)

DOI:
10.1016/j.ceramint.2014.08.032
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发表时间:
2014-12
影响因子:
5.2
通讯作者:
Zhang, Hui
Zhang, Hui
中科院分区:
材料科学1区
文献类型:
--
作者:
Wei, Zhenhai;Su, Congxue;Xiang, Fei;Zhang, Hui

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采用传统的固体陶瓷工艺制备了新型低烧微波介质陶瓷BaMV2O7(M=Mg, Zn)。bamgv2o7和baznv2o7粉末在700℃下均可形成纯正交相。在830℃和720℃致密化温度下烧结的bamgv2o7和baznv2o7具有良好的微波介电性能:εr=8.2和10.7,Q×f=37600 GHz (11.7 GHz)和31000 GHz, τf分别= - 35.2 ppm/°C和- 64.4 ppm/°C。
Novel low-firing microwave dielectric ceramics BaMV2O7(M=Mg, Zn) were prepared by the conventional solid-state ceramic route. A pure orthorhombic phase can be formed at 700 °C for both BaMgV2O7and BaZnV2O7powders. Two promising ceramics BaMgV2O7and BaZnV2O7sintered at densification temperatures (830 °C and 720 °C, respectively) were found to possess good microwave dielectric properties:εr=8.2 and 10.7,Q×f=37600 GHz (at 11.7 GHz) and 31000 GHz, andτf=−35.2 ppm/°C and −64.4 ppm/ °C, respectively.
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