Influence of molybdenum substitution on the microwave dielectric properties of CaWO4 ceramic

被引:9
作者
Xiao, Mi [1 ,2 ]
Zhou, Ziqi [1 ,2 ]
Gu, Qingqing [1 ,2 ]
Zhao, Yonggui [1 ,2 ]
Lan, Kuibo [1 ,2 ]
Zhang, Ping [1 ,2 ]
机构
[1] Tianjin Univ, Sch Elect & Informat Engn, Tianjin 300072, Peoples R China
[2] Tianjin Univ, Minist Educ, Key Lab Adv Ceram & Machining Technol, Tianjin 300072, Peoples R China
关键词
543.3 Molybdenum and Alloys - 804 Chemical Products Generally - 931.2 Physical Properties of Gases; Liquids and Solids;
D O I
10.1007/s10854-017-6803-z
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Dielectric properties of Ca(W1-xMox)(4) (x = 0, 0.02, 0.04, 0.06, 0.08) were investigated at microwave frequency. With the increase of MoO3, the dielectric constant (epsilon (r) ) increased slightly, the value of quality factor (Q x f (0)) increased considerably and reach the maximum of 79,919 GHz, and the temperature coefficient of resonant frequency (tau (f)) shifted for the minus direction. The relationship between the dielectric properties and polarizability, packing fraction and the oxygen bond valence were discussed. The optimum results were obtained when x = 0.06, the dielectric properties are as follows: epsilon (r) = 10.22, Q x f (0) = 79,919 GHz and tau (f) = -40.39 ppm/A degrees C.
引用
收藏
页码:10343 / 10348
页数:6
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