Phase evolution and microwave dielectric properties of TiO2-modified (Mg0.95Co0.05)2TiO4 ceramics

被引：6

作者：

Huang, Cheng-Liang ^{[1
]}

Chen, Jhih-Yong ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 70101, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2011年 / 509卷 / 21期

关键词：

Crystal growth; Dielectric response; FREQUENCIES; SYSTEM;

D O I：

10.1016/j.jallcom.2011.03.046

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Phase evolution and microwave dielectric properties of (1-x)(Mg0.95Co0.05)(2)TiO4-xTiO(2) (x = 0-1) ceramics prepared by the conventional mixed oxide route have been investigated. Increasing the TiO2 content would lead to a main phase transformation from (Mg0.95Co0.05)(2)TiO4 to (Mg0.95Co0.05)TiO3, (Mg0.95Co0.05)Ti2O5 and then TiO2. Not only did the TiO2 addition compensate the tau(f), it also lowered the sintering temperature of specimen. A huge drop of Q x f occurs at a 40-60 mol% TiO2 addition was attributed to the formation of (Mg0.95Co0.05)Ti2O5 phase. Specimen with x = 0.78 can possess an excellent combination of microwave dielectric properties: epsilon(r) similar to 24.77, Q x f similar to 38,500 GHz and tau(f)similar to-1.3 ppm/degrees C. (C) 2011 Published by Elsevier B.V.

引用

页码：6273 / 6275

页数：3

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