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- W923009186 abstract "The microstructures and microwave dielectric properties of Mg0.97Zn0.03TiO3 ceramics doped with 0.5 mol% Zn-excess using CaTiO3-modified (hereafter referred to as (1−x)MZT-xCT) were investigated with the content of CaTiO3 as well as sintering temperature. A high Q × f value of 277,500 GHz (at 8.5 GHz) together with a dielectric constant (εr) of 17.66 and a τf value of −55.09 × 10−6/°C has been found for Mg0.97Zn0.03TiO3 ceramics doped with 0.5 mol% Zn-excess (hereafter referred to as MZT). However, the temperature coefficient of resonant frequency (τf) was too large to meet the actual requirements of applications. CaTiO3, having a large positive τf∼800 × 10−6/°C, was added to form a temperature-stable ceramic system as a τf compensator. By appropriately adjusting the x value in the (1−x) MZT-xCT ceramics system, zero τf value can be achieved. Out of all samples of this series, A dielectric constant (εr) of 21.01, a Q × f value of 80,912 (at 7.94 GHz) and a τf value of 0.76 × 10−6/°C which satisfied microwave applications in filter substrates were obtained for 0.93MZT-0.07CT ceramics sintered at 1250 °C for 4 h." @default.
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- W923009186 date "2015-11-01" @default.
- W923009186 modified "2023-10-13" @default.
- W923009186 title "Influence of CaTiO3 modification on microstructures and microwave dielectric properties of Mg0.97Zn0.03TiO3 ceramics doped with 0.5mol% Zn-excess" @default.
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- W923009186 doi "https://doi.org/10.1016/j.jallcom.2015.06.210" @default.
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