Raman Interpretation of Microwave Properties of χBa(Mg1/3Ta2/3)O3+(1-z)Sr(Mg1/3Ta2/3)O3 Ceramics

摘要：

The complex perovskites, xBa(Mg1=3Ta2=3)O3+(1-x) Sr(Mg1=3Ta2=3)O3 with x=0,0.125,0.25,0.375, and 0.5 were investigated by Raman scattering and the microwave dieffectric measurements. The Raman result shows a dominance of 1:2 ordered structure for x≦0.5. The microwave dieffectric constant linearly increases and Q×f value decreases with Sr concentrations. The microwave performance is mainly caused by the Sr substitution that induces the rigidity of oxygen-octahedral network, as evidenced by the blue shift and wide width of the A1g(O) phonon near 800 cm-1,I.e., the stretching mode of oxygen-octahedron.

作者: C.-T. Chia P.-J. Chang I.-N. Lin L.-J. Lin

作者单位: Department of Physics, Taiwan Normal University, Taipei 116, Taiwan, China Department of Physics, Tamkang University, Tamsui Taipei 251, Taiwan, China Material and Chemical Research Laboratories Industrial Technology Research Institute, Chutung Hsinch

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2007(2007年电磁学研究新进展学术研讨会)(PIERS 2007)

会议地点: 北京

会议语种:英文

页码: 605-607

在线出版日期: 2007-03-26（万方平台首次上网日期，不代表论文的发表时间）