Microwave dielectric properties of Ca(Li1/3Nb2/3)O3-δ ceramics with ZnO additive

摘要：

The complex perovskite compound Ca(Li1/3Nb2/3)O3-δ(CLN) ceramics have received much attention due to the superior properties and relatively low sintering temperature 1150℃. In order to further low the sintering temperature of the CLN ceramics, enhance the Q·f values and other dielectric properties, the effects of the additive ZnO on the sinterability and dielectric properties of the CLN have been investigated. The CLN ceramics were prepared by conventional solid state ceramic route. With the addition of 1.0 wt％ ZnO, the sintering temperature of Ca(Li1/3Nb2/3)O3-δ(CLN) ceramics was effectively reduced from 1150℃ to 1090℃, and the Q·f value was increased from 18920 to 20950 GHz (at 7.09 GHz). It also possesses compatible dielectric constant εr of 27.8 and τf value of -23.57 ppm/℃. While with the addition of 1.25 wt％ ZnO, the Q·f value of Ca(Li1/3 Nb2/3)O3-δ (CLN) ceramics sintered at 1150℃ for 3 hours was increased significantly to 32150 GHz (at 7.09 GHz), εr of 28.3 and τf value of -18.55 ppm/℃. The relationship between microstructure and microwave dielectric characteristics was studied using X-ray diffractometer and Scanning electron microscope.

关键词： microwave dielectric ceramics Ca(Li1/3Nb2/3)O3-δ sinterability ZnO additive

作者: Jihong Liao Ying Dai Wen Chen Lianxiang Tan Shaohua Qu

作者单位: State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, andSchool of Mat State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, andSchool of Mat School of Physics and Electronic Engineering, Xiangfan University, Xiangfan (441053), 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: 144-150

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）