Low-temperature sintering and microwave dielectric properties of Li2MgTi3O8 ceramics doped with BaCu(B2O5)

来源期刊:中南大学学报(英文版)2012年第5期

论文作者:包燕 陈国华 侯美珍 韩作鹏 邓开能 杨云 袁昌来 周昌荣 刘心宇

文章页码:1202 - 1205

Key words:ceramics; dielectrics; low-temperature co-fired ceramics; microwave dielectric properties

Abstract:

The influences of BaCu(B2O5) (BCB) addition on sintering, microstructure and microwave dielectric properties of Li2MgTi3O8 ceramics were investigated using X-ray diffractometry, scanning electron microscopy and microwave dielectric measurements. The experimental results show that a small amount of BaCu(B2O5) addition can effectively reduce the sintering temperature to 900℃, and induce only a limited degradation of the microwave dielectric properties. Typically, the best microwave dielectric properties of εr=24.5, Q×f =24 622 GHz, τf=4.2×10-6 -1 are obtained for 1.0% BCB-doped Li2MgTi3O8 ceramics sintered at 900℃ for 3 h. The BCB-doped Li2MgTi3O8 ceramics can be compatible with Ag electrode, which may be a strong candidate for low temperature co-fired ceramics applications.

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