Microstructure and microwave dielectric properties of Li2Ti1-x(Zn1/3Nb2/3)xO3 ceramics

被引：32
|
作者：
Chen, Guo-hua [1 ,2 ]
Xu, Hua-rui [1 ,2 ]
Yuan, Chang-lai [1 ,2 ]
机构：
[1] Guilin Univ Elect Technol, Sch Mat Sci & Engn, Guilin 541004, Peoples R China
[2] Guilin Univ Elect Technol, Guangxi Key Lab Informat Mat, Guilin 541004, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2013年 / 39卷 / 05期
关键词：
Powders-solid state reaction; Dielectric properties; Microwave ceramics; PEROVSKITES; OXIDES;
D O I：
10.1016/j.ceramint.2012.11.081
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：
Li2Ti1-x(Zn1/3Nb2/3)(x)O-3 (0 <= x <= 0.5) ceramics were prepared by a solid state ceramic route, and the phase purity, microstructure, and microwave dielectric properties were investigated. The XRD results suggest the formation of solid solutions for all studied compositions (0 <= x <= 5). The dielectric properties are strongly dependent on the compositions, the densifications and the microstructures of the samples. The Q x f value increases with x up to x=0.2 and then decreases with the further increase of x. The best microwave dielectric properties of epsilon(r)=20.5, Q x f=75,257 GHz, and tau(f)=15.4 ppm/degrees C could be obtained when x=0.2. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：4887 / 4892
页数：6
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