Fabrication and Microwave Dielectric Properties of Mg2SiO4-LiMgPO4-TiO2 Composite Ceramics

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• 作者：ZiFan Cheng ; Xing Hu ; Yi Li and ZhiYuan Ling
• 刊名：Journal of the American Ceramic Society
• 出版年：2016
• 出版时间：August 2016
• 年：2016
• 卷：99
• 期：8
• 页码：2688-2692
• 全文大小：591K
• ISSN：1551-2916

文摘

Complete solid solutions between Mg₂SiO₄ and LiMgPO₄ are confirmed by the XRD results. The phase constitution of 0.5Mg₂SiO₄-0.5LiMgPO₄ is found to be dependent on firing temperature. The chemical compatibility between Mg₂SiO₄ and rutile phase at sintering temperature is modified by incorporating LiMgPO₄. The microwave dielectric properties of (1−y)(0.5Mg₂SiO₄-0.5LiMgPO₄)-yTiO₂ (y = 0–0.3) composite ceramics have been investigated. The optimized microwave dielectric properties for 0.35Mg₂SiO₄-0.35LiMgPO₄-0.3TiO₂ ceramics sintered at 1050°C show low dielectric constant (11.4), high-quality factor (31 800 GHz), and low-temperature coefficient of resonant frequency (−4 ppm/°C).