A new microwave dielectric ceramic TmVO4 with high-quality factor and the effect of TiO2 on its microwave dielectric properties

被引：0

作者：

Zhuting Chen

Yuxin Zheng

Bo Li

机构：

[1] University of Electronic Science and Technology of China,School of Electronic Science and Engineering

[2] State Key Laboratory of Electronic Thin Films and Integrated Devices,undefined

[3] National Engineering Research Center of Electromagnetic Radiation Control Materials,undefined

来源：

Journal of Materials Science: Materials in Electronics | 2023年 / 34卷

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摘要：

A new microwave dielectric ceramic TmVO4 was prepared via a solid-state reaction method. The phase formation and microstructure of TmVO4 ceramics were investigated in detail. Rietveld refinements and TEM analysis reveal that TmVO4 is crystallized as a tetragonal zircon-type structure with the space group I41/amd. Vibrational modes of TmVO4 were also studied via Raman spectra. Moreover, the influence of relative density and ionic polarizability on the permittivity was discussed. TmVO4 ceramic possessed high densification and good microwave dielectric properties: εr = 11.95, Q × f = 53,594 GHz, and τf = − 40.4 ppm/°C at 1200 °C. The influence of TiO2 on the microwave dielectric properties of TmVO4 was investigated, with the addition of 7wt% TiO2, the ceramic sintered at 1250 °C showed a near to zero τf value (2.7 ppm/°C).

引用

共 115 条

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