標題: Microstructures and microwave dielectric properties of Li2O-Nb2O5-ZrO2 ceramics
作者: Lu, Chun-An
Lin, Pang
Wang, Sea-Fue
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: microwave properties;densification;Microstructural evolution;Li2O-Nb2O3-ZrO2 system
公開日期: 2007
摘要: Solid solution of Li1-4y-xZry+4xNb1-3xO3 system is anew non-stoichiomettic compound with orthorhombic perovskite structure. In this study, the effects of the calcination and the sintering temperatures on the microstructural evolution and microwave dielectric properties of Li1-4y-xZry+4xNb1-3xO3 ceramics were performed. Dense Li0.774Zr0.057NbO3 ceramics can be obtained at the sintering temperature of 1150 degrees C. Li0.774Zr0.057NbO3 phase exists as the main phase with the existence of a minor LiNb3O8 phase. Typical microwave dielectric properties for dense Li0.774Zr0.057NbO3 ceramics are as followed: epsilon(r) approximate to 39, Q x f approximate to 4500, and tau(f) = -16.6 ppm/degrees C, measured at 6 GHz. (c) 2006 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
URI: http://hdl.handle.net/11536/11394
http://dx.doi.org/10.1016/j.ceramint.2006.04.013
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2006.04.013
期刊: CERAMICS INTERNATIONAL
Volume: 33
Issue: 7
起始頁: 1389
結束頁: 1393
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