Dielectric properties of B2O3-doped 0.92(Mg 0.95Co0.05)2TiO4-0.08(Ca 0.8Sr0.2)TiO3 ceramics for microwave applications

Bing Jing Li, Jhih Yong Chen, Guan Sian Huang, Chang Yang Jiang, Cheng Liang Huang

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

The dielectric properties and microstructures of 0.92(Mg 0.95Co0.05)2TiO4-0.08(Ca 0.8Sr0.2)TiO3 ceramics with B2O 3 additions have been investigated. The sintered 0.92(Mg 0.95Co0.05)2TiO4-0.08(Ca 0.8Sr0.2)TiO3 ceramics were characterized by using X-ray diffraction spectra, scanning electron microscopy (SEM), backscattering electron image (BEI) and energy dispersive X-ray (EDX). The dielectric properties are strongly dependent on the densifications and the microstructures of the specimens. The decrease of Q × f value at high-level B2O3 addition was owing to the inhomogeneous grain growth and the high-dielectric-loss of the liquid phase. In comparison with that of pure 0.92(Mg0.95Co0.05)2TiO 4-0.08(Ca0.8Sr0.2)TiO3 ceramics, specimen with 0.5 wt% B2O3 addition possesses a substantial fine combination of dielectric properties (an εr of 18.07, a Q × f of 95,000 GHz at 9.5 GHz and a τf of -4.7 ppm/°C) at a lower sintering temperature of 1200 °C for 4 h. Moreover, a band-pass filter is also designed and simulated on the proposed dielectric to study its performance.

原文English
頁(從 - 到)291-296
頁數6
期刊Journal of Alloys and Compounds
505
發行號1
DOIs
出版狀態Published - 2010 八月 27

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

指紋 深入研究「Dielectric properties of B<sub>2</sub>O<sub>3</sub>-doped 0.92(Mg <sub>0.95</sub>Co<sub>0.05</sub>)<sub>2</sub>TiO<sub>4</sub>-0.08(Ca <sub>0.8</sub>Sr<sub>0.2</sub>)TiO<sub>3</sub> ceramics for microwave applications」主題。共同形成了獨特的指紋。

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