Microwave dielectric properties of Ca0.4-xMgxSm0.4TiO3 ceramics

被引：8

作者：

Hsu, Cheng-Hsing ^{[1
]}

Tsai, Ping-Sung ^{[1
]}

Tseng, Ching-Fang ^{[1
]}

Hung, Shao-Hsiang ^{[1
]}

Huang, I. Chien ^{[1
]}

机构：

[1] Natl United Univ, Dept Elect Engn, Kung Ching Li 36003, Miao Li, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 582卷

关键词：

Ca0.4-xMgxSm0.4TiO3; ceramics; Microwave dielectric properties; MAGNESIUM TITANATE; TOLERANCE FACTOR;

D O I：

10.1016/j.jallcom.2013.08.017

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：

Ca0.4-xMgxSm0.4TiO3 ceramics were prepared by the conventional solid-state reaction method to investigate the effects of composition and sintering conditions upon microstructures and microwave dielectric properties. The sintered Ca0.4-xMgxSm0.4TiO3 ceramics have a permittivity in the range 88.3-55, the quality factors from 17,000 to 2000 GHz, and the variation of temperature coefficient of resonant frequency from 135 to -1 ppm/degrees C with increasing the composition x. The optimized microwave dielectric properties with high dielectric constant of 55, low Q x f value about 2000 GHz, and near zero tau(f) value were obtained for Ca0.2Mg0.2Sm0.4TiO3 ceramics sintered at 1250 degrees C for 3 h, which was promising candidate as a high dielectric constant, and low Q x f value and tau(f) value microwave material for fabrication of tunable microwave substrates. (c) 2013 Elsevier B.V. All rights reserved.

引用

页码：355 / 359

页数：5

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