5ZnO·2B2O3–Pb1.5Nb2O6.5 microwave dielectric ceramics with near-zero temperature coefficient of resonant frequency
作者： Dongxiang Zhou , Zhiping Zheng , Wei Luo , Jun Zhao , Yunxiang Hu
DOI: 10.1016/J.CERAMINT.2015.04.146
关键词: Materials science 、 Ceramic 、 Microstructure 、 Microwave 、 Temperature coefficient 、 Zero temperature coefficient 、 Cofiring 、 Composite material 、 Compatibility (geochemistry) 、 Sintering
摘要: Abstract The effects of Pb1.5Nb2O6.5 addition were investigated on the densification, phase evolution, microstructure, and microwave dielectric properties 5ZnO·2B2O3 ceramics. It was shown that a 5.5 mol% to ceramics successfully tailored its temperature coefficient resonant frequency (τf) from −80 ~0 ppm/°C lowered sintering 955 890 °C without degrading properties. sintered at 890−910 °C for 3 h with 5.0−6.0 mol% additions exhibited excellent properties: er=7.8−8.3, Q×f=11,500−15,200 GHz, −9.2 ppm/°C≤τf≤+6.6 ppm/°C @ ~7.4 GHz. showed cofiring compatibility Ag therefore novel candidates LTCC substrates.
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