A novel Y3ZnAl3SiO12 microwave dielectric ceramic for microwave communication application as substrates |
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| Authors: | Haiqing Yin Kaixin Song Jinsheng Wei Junming Xu Jun Wu Huifang Gao Weitao Su Huixing Lin |
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| Affiliation: | 1.College of Electronic Information and Engineering,Hangzhou Dianzi University,Hangzhou,China;2.College of Materials Sciences and Environmental Engineering,Hangzhou Dianzi University,Hangzhou,China;3.Shanghai Institute of Ceramics, Chinese Academy of Sciences,Shanghai,China |
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| Abstract: | Novel microwave dielectric ceramic Y3ZnAl3SiO12 were synthesized by solid-state route. The crystal structure of synthesized samples was characterized by X-ray diffraction and refined with Rietveld method. Microstructure and microwave dielectric properties of Y3ZnAl3SiO12 ceramics were investigated using Scanning Electron Microscopy and Hakki–Coleman method. X-ray data display that major phase of Y3ZnAl3SiO12 is isostructural to Y3Al5O12 with a cubic garnet structure and space group of Ia-3d, which is composed of (Al/Si)O4 tetrahedron, (Zn/Al)O6 octahedron and YO8 dodecahedron, besides minor Y2SiO5 secondary phase. The distribution of grain sizes is closer to Gauss distribution. Bulk density of samples has a similar variation curve with Q*f of samples. Y3ZnAl3SiO12 ceramics exhibit excellent microwave dielectric properties: εr?=?10.2, Q*f?=?37938.2 (@9.47 GHz), τ f ?=??31.7 ppm/°C at sintering temperature of 1500 °C. Our results indicate Y3ZnAl3SiO12 could be a potential material for millimeter wave communication systems as microwave substrates. |
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