x(Mg0.7Zn0.3)0.95Co0.05TiO3-(1-x)(La0.5Na0.5)TiO3 ceramic at microwave frequency with a near zero temperature coefficient of resonant frequency

被引：19

作者：

Huang, Cheng-Liang ^{[2
]}

Lin, Shih-Hung ^{[3
,4
]}

Liu, Shih-Sheng ^{[2
]}

Chen, Yuan-Bin ^{[1
]}

机构：

[1] Chang Jung Christian Univ, Dept Engn & Management Adv Technol, Tainan 71101, Taiwan

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

[3] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 106, Taiwan

[4] Natl Taiwan Univ, Dept Elect Engn, Taipei 106, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 489卷 / 02期

关键词：

Microwave dielectric; Oxides; X-ray diffraction; Dielectric properties; DIELECTRIC-PROPERTIES; PERMITTIVITY;

D O I：

10.1016/j.jallcom.2009.09.103

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：

Dielectric properties of x(Mg0.7Zn0.3)(0.95)Co0.05TiO3-(1-x)(La0.5Na0.5)TiO3 ceramic were investigated at microwave frequencies. A nearly 0 ppm/degrees C temperature coefficient of resonant frequency was realized at x = 0.9. A two-phase system was confirmed by XRD analysis. A dielectric material applicable to microwave devices with a Q x f of 20,000-87,000 GHz and a dielectric constant of 21.27-26.2 was obtained at 1100 degrees C after 4 h of sintering. The microwave dielectric material 0.9(Mg0.7Zn0.3)(0.95)Co0.05TiO3-0.1 (La0.5Na0.5)TiO3 sintered at 1150 degrees C for 4 h has a dielectric constant of 24.56, a Q x f of 68,000 GHz, and a tau(f) value of 0 ppm/degrees C. It is proposed as a candidate dielectric for GPS patch antennas. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：541 / 544

页数：4

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