Dielectric properties of low permittivity BST-Mg2TiO4 composite ceramics

摘要：

100(1-y)wt％Ba0.50Sr0.50TiO3—100ywt％Mg2TiO4 (BST-MT, y=0.76, 0.8, 0.82, marked as S1, S2, S3) composite ceramics with low permittivity (ε<60) were prepared by a traditional solid reaction method. The microstructure and dielectric properties of BST-MT composite ceramics were investigated. With the content of MT increasing, the dielectric peaks of BST-MT were depressed and broadened, thus the thermal stability was improved. However, the tunability declined with y increasing. In order to offset the temperature sensitivity, we obtained an Electrical field-Temperature (E-T) relationship by changing the dc bias field within a wide temperature range so that we could keep the tunability at a fixed value (3％). Such result explored a new route to compensate the temperature sensitivity of BST system in designing tunable microwave devices.

关键词： BST ceramics low permittivity

作者: Cheng Liu Xiao-gang Lu Chang-jie Gao Hui-xia Jing Lin Cheng Peng Liu

作者单位: College of Physics and Information Technology, Shaanxi Normal University, Xi’an, 710062, China Institute 206 of China Ordnance Industries Group Corporation, Xi’an, 710100, China

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 257-262

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）