气氛烧结binbo4微波介质陶瓷介电性能的研究 dielectric properties of binbo4 ceramics sintered in different atmospheres.pdfVIP

第 5 期 电 子 元 件 与 材 料 Vol.25 No.5 2006 年 5 月 ELECTRONIC COMPONENTS MATERIALS May 2006 研研 究究 与与 试试 制制 研研 究究 与与 试试 制制 R D 气氛烧结 BiNbO4 微波介质陶瓷介电性能的研究 刘璞凌 1 丁士华 1 杨同青 1 沈 波 1 姚 熹 1 2 摘要 : BiNbO4 Q r r tg 关键词: 中图分类号: TM82 文献标识码 :A 文章编号 :1001-2028 2006 05-0052-03 Dielectric Properties of BiNbO Ceramics Sintered 4 in Different Atmospheres 1 1 1 1 1,2 LIU Pu-ling , DING Shi-hua , YANG Tong-qing , SHEN Bo , YAO Xi ( 1. Functional Materials Research Lab of Tongji University, Shanghai 200092, China; 2. Research Lab of Electronic Materials, Xi′an Jiaotong University, Xi′an 710049, China ) Abstract: Studied were the dielectric properties of BiNbO4 ceramics sintered in different atmospheres. The difference of grain morphology was not significant and all the samples exhibited the same orthorhombic phase. The sample sintered in atmosphere of N2 had relatively low density, low dielectric constant and relatively high Q value. Dielectric constant and loss increased rapidly with the increasing of temperature, which was caused by the polarization of thermal ions. The dielectric relaxation phenomenon was only observed in the BiNbO sample sintered in atmosphere of N .