Dielectric properties of a new ceramic system (1 - x)Mg4Nb2O9-xCaTiO3 at microwave frequency

Cheng Liang Huang, Jhih Yong Chen, Chih Chao Liang

研究成果: Article同行評審

22 引文 斯高帕斯(Scopus)

摘要

The microstructures and the microwave dielectric properties of the (1 - x)Mg4Nb2O9-xCaTiO3 ceramic system were investigated. In order to achieve a temperature-stable material, CaTiO3f ∼ 800 ppm/°C) was chosen as a τf compensator and added to Mg4Nb2O9f ∼ -70 ppm/°C) to form a two phase system. It was confirmed by the XRD and EDX analysis. By appropriately adjusting the x-value in the (1 - x)Mg4Nb2O9-xCaTiO3 ceramic system, near-zero τf value can be achieved. A new microwave dielectric material, 0.5Mg4Nb2O9-0.5CaTiO3 applicable in microwave devices is suggested and possesses the dielectric properties of a dielectric constant εr ∼ 24.8, a Q × f value ∼82,000 GHz (measured at 9.1 GHz) and a τf value ∼-0.3 ppm/°C.

原文English
頁(從 - 到)1111-1115
頁數5
期刊Materials Research Bulletin
44
發行號5
DOIs
出版狀態Published - 2009 5月 6

All Science Journal Classification (ASJC) codes

  • 一般材料科學
  • 凝聚態物理學
  • 材料力學
  • 機械工業

指紋

深入研究「Dielectric properties of a new ceramic system (1 - x)Mg4Nb2O9-xCaTiO3 at microwave frequency」主題。共同形成了獨特的指紋。

引用此