Influence of B2O3 additions and sintering temperature on microwave dielectric properties of La2.98/3Ba0.01(Mg0.5Sn0.5)O3 ceramics

被引：23

作者：

Chen, Yih-Chien ^{[1
]}

Hsu, Wei-Yu ^{[1
]}

Wang, Yen-Nien ^{[1
]}

Chen, Jia-Woei ^{[1
]}

机构：

[1] Lunghua Univ Sci & Technol, Dept Elect Engn, Shiang, Taoyuan County, Taiwan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2010年 / 492卷 / 1-2期

关键词：

Ceramics; Sintering; Dielectric response; Scanning electron microscopy; X-ray diffraction; BA(MG1/3TA2/3)O-3;

D O I：

10.1016/j.jallcom.2009.11.085

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：

In this study, the microwave dielectric properties of La2.98/3Ba0.01(Mg0.5Sn0.5)O-3 ceramics prepared by the conventional solid-state method have been investigated for application in mobile communication. B2O3 was selected as a liquid sintering aid to lower the sintering temperature of La2.98/3Ba0.01(Mg0.5Sn0.5)O-3 ceramics. It was found that with 0.25 wt% B2O3 additive, the X-ray diffraction patterns of the La2.98/3Ba0.01(Mg0.5Sn0.5)O-3 ceramics exhibited no significant phase difference of different sintering temperatures from 1350 to 1550 degrees C. The maximum values of the dielectric constant and the quality factor (Q x f) can be obtained when the La2.98/3Ba0.01(Mg0.5Sn0.5)O-3 with 0.25 wt% B2O3 additive were sintered at 1400 degrees C for 4 h. The temperature coefficient of resonant frequency tau(f) (-72 ppm/degrees C) was measured of La2.98/3Ba0.01(Mg0.5Sn0.5)O-3 ceramics with 0.25 wt% B2O3 sintered at 1400 degrees C for 4 h. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：320 / 324

页数：5

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