Low-temperature sintering and microwave dielectric properties of (1 - x)MgTiO3-xCaTiO3 ceramics using bismuth addition

Cheng Liang Huang, Chung Long Pan

研究成果: Article同行評審

49 引文 斯高帕斯(Scopus)

摘要

The effects of bismuth addition on the microwave dielectric properties of (1 - x)MgTiO3-xCaTiO3 ceramics were investigated. MgTiO3-CaTiO3 (hereafter referred to as MCT) ceramics was prepared by the conventional solid-state method. With a small amount of Bi2O3 addition, the sintering temperature of MCT ceramics can be effectively lowered without degrading the dielectric properties at microwave frequency. At a constant Mg/Ca ratio, the Q × f values are strongly dependent on the amount of Bi2O3 addition and decrease with increasing bismuth content owing to the decrease of density, while the εr value only shows a small increase. In the (1 - x)MgTiO3-xCaTiO3 system, the microwave dielectric properties could be controlled by varying x. At 1250°C, 0.94MgTiO3-0.06CaTiO3 ceramics with 0.2 mol% Bi2O3 addition gives a dielectric constant εr of 22.6, a Q × f value of 53000 (7 GHz) and a τf value of -2.9 ppm/°C.

原文English
頁(從 - 到)707-711
頁數5
期刊Japanese Journal of Applied Physics
41
發行號2 A
DOIs
出版狀態Published - 2002 2月

All Science Journal Classification (ASJC) codes

  • 一般工程
  • 一般物理與天文學

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