The sintering behavior and microwave dielectric properties of Mg4(Nb,Sb)2O9 ceramics

被引：3
|
作者：
Liu, P. [1 ]
Su, W. A. [1 ]
Yao, G. G. [1 ]
Bian, X. B. [1 ]
机构：
[1] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China
来源：
JOURNAL OF ELECTROCERAMICS | 2008年 / 21卷 / 1-4期
关键词：
Microwave dielectric ceramic; Mg-4(Nb2-xSbx)O-9; High Q; Low epsilon value; Magnesium niobate;
D O I：
10.1007/s10832-007-9224-1
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The sintering behavior, microstructure and microwave dielectric properties of Mg-4(Nb2-xSbx)O-9 (0 <= x <= 2) solid solutions were investigated systematically by X-ray diffraction(XRD), scanning electron microscopy(SEM) and a network analyzer. The solid solutions of Mg-4(Nb2-xSbx)O-9 was formed with x value being no more than 1.6. The dielectric constant (epsilon) of the sintered ceramics decreased from 13.06 to 6.28 with Sb content x from 0 to 1.6. With a substitution of Sb5+ for Nb5+ (0.04 <= x <= 0.08), the sintering temperature of Mg4Nb2O9 ceramics was decreased born 1400 to 1300 degrees C without degradation of the Qf values. The optimum microwave dielectric properties of epsilon similar to 12.26, Qf similar to 168,450 GHz, and tau(f)similar to-56.4 ppm/degrees C were obtained in the composition of Mg-4(Nb1.6Sb0.4)O-9 sintered at 1300 degrees C.
引用
收藏
页码：478 / 481
页数：4
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