硅酸盐学报2012，Vol.40Issue(2)：277-282,6.
Mn和Zr共掺杂钛酸锶钡／氧化镁复合陶瓷材料的微结构和介电性能
Crystal Structure and Dielectric Properites of Bao.6Sr0.4TiO3/MgO Ceramics Doped with ZrO2 and MnO2
摘要
Abstract
ZrO2 and MnO2 co-doped Ba0.6Sr0.4TiO3/MgO precursor powder was synthesized by solid reaction method. The precursor was sintered in air at 1450 ℃ for 4 h. The crystal structure and dielectric properties of Ba0.6Sro,4TiO3/MgO ceramics doped with ZrO2 and MnO2 were investigated by scanning electron microscopy and X-ray diffraction, respectively. The results show that the relative dielectric constant and dielectric loss of the barium strontium titanate （BST） ceramics decrease, the temperature stability and the crys- tal cell parameter of BST ceramics increase and MgO presents in BST as a separate phase with the increase of ZrO2 doping. The BST ferroelectric ceramic material with a low dielectric constant （er〈ll0） at 25 ℃ and the dielectric properties （i.e., dielectric loss tan δ〈1.0 x 10-3 at 10 kHz, temperature coefficient 〈6.012 x 10-3 and tunability 〉20% at 8.0 kV/mm） suitable for phase shifter was pre- pared.关键词
钛酸锶钡／氧化镁/氧化锆/介电性能/掺杂Key words
barium strontium titanate/magnesium oxide/zirconium dioxide/dielectric properties/doping分类
化学化工引用本文复制引用
刘秋香,董桂霞..Mn和Zr共掺杂钛酸锶钡／氧化镁复合陶瓷材料的微结构和介电性能[J].硅酸盐学报,2012,40(2):277-282,6.基金项目
中俄国际合作项目 （）
