Preparation and Microstrutures of BSTO/MgO Ferroelectric Materials for Phase Shift  

作　　者：杨春霞 

机构地区：[1]College of Materials Science and Engineering, Nanjing University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2007年第1期122-125,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Commission of Science Technology and Industry for National Defense(No.MKPT-03-155)

摘　　要：Barium strontium titanate/magnesia （BSTO/MgO） ferroelectric material for phase shift was prepared by traditional solid phase synthesis. The phase distribution, microstructure and electric properties were investigated. The results show that no secondary phase appears in the composites and the dimension of grains distributes uniformly. With 50 wt% MgO content, the dielectric tunability reaches 17.5 % in the external DC field of 4 000 Vomm^-1 and the microwave loss at about 2.5 GHz is 8×10^-3. Hence, it can be applied in tunable microwave phase shifters.Barium strontium titanate/magnesia （BSTO/MgO） ferroelectric material for phase shift was prepared by traditional solid phase synthesis. The phase distribution, microstructure and electric properties were investigated. The results show that no secondary phase appears in the composites and the dimension of grains distributes uniformly. With 50 wt% MgO content, the dielectric tunability reaches 17.5 % in the external DC field of 4 000 Vomm^-1 and the microwave loss at about 2.5 GHz is 8×10^-3. Hence, it can be applied in tunable microwave phase shifters.

关 键 词：barium strontium titanate/magnesia ferroelectric material phase shifter DIELECTRIC 

分 类 号：TB34[一般工业技术—材料科学与工程]