Influence of CaTiO3 modification on microstructures and microwave dielectric properties of Mg0.97Zn0.03TiO3 ceramics doped with 0.5mol% Zn-excess
作者： Lingxia Li , Jing Ye , Shuai Zhang , Zhengdong Gao , Sai Li
DOI: 10.1016/J.JALLCOM.2015.06.210
关键词:
摘要: Abstract The microstructures and microwave dielectric properties of Mg 0.97 Zn 0.03 TiO 3 ceramics doped with 0.5 mol% Zn-excess using CaTiO -modified (hereafter referred to as (1−x)MZT-xCT) were investigated the content well sintering temperature. A high Q × f value 277,500 GHz (at 8.5 GHz) together a constant (e r ) 17.66 τ f of −55.09 × 10 −6 /°C has been found for MZT). However, temperature coefficient resonant frequency (τ was too large meet actual requirements applications. , having positive ∼800 × 10 /°C, added form temperature-stable ceramic system compensator. By appropriately adjusting x in (1−x) MZT-xCT system, zero can be achieved. Out all samples this series, 21.01, 80,912 7.94 GHz) 0.76 × 10 which satisfied applications filter substrates obtained 0.93MZT-0.07CT sintered at 1250 °C 4 h.
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