Effect of SnO2 substitution on microwave dielectric characteristics of Zn0.15Nb0.3Ti0.55O2 ceramics

3rd International Conference on New Material and Chemical Industry

材料科学;化学工业

Yang, H.C.^1^2 ; Zhang, S.R.^1^2 ; Chen, Y.W.^1^2 ; Yang, H.Y.^1^2 ; Yuan, Y.^1^2^3 ; Li, E.Z.^1^2

National Engineering Research Center of Electromagnetic Radiation Control Materials, University of Electronic Science and Technology of China, Chengdu

610054, China^1

Key Laboratory of Multi-Spectral Absorbing Materials and Structures, Ministry of Education, University of Electronic Science and Technology of China, Chengdu

610054, China^2

Institute of Electronic and Information Engineering of UESTC in Guangdong, Dongguan

523808, China^3

关键词: F values;    Grain size;    Microwave dielectric characteristics;    Microwave dielectric properties;    Optimal combination;    Second phase;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/479/1/012032/pdf
DOI  :  10.1088/1757-899X/479/1/012032

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The relevance of Sn4+ substituted for Ti4+ of Zn0.15Nb0.3Ti0.55O2 ceramics is investigated. X-ray diffraction patterns indicate that the major phase can be matched with Zn0.15Nb0.3Ti0.55O2 and a second phase ZnTiNb2O8 appears in different composition. The content of ZnTiNb2O8 phase gradually increases along with more substitution, which is contributed to the decline of r. The decrease of grain size and the observed pores have negative influence on Q × f values. And the τf values move towards a lower value, corresponding to the variation of r. An optimal combination of microwave dielectric properties is: r = 83.2, Q × f = 15456 GHz, τ f = 301.5 ppmfC with x = 0.03, sintered at 1050 "C.