中文摘要：

采用传统固相方法制备了（1一×）（0．15BiScO3-0．85PbTi03）一xBi（Mg1／2Ti1/2O3（BSMPTx）压电陶瓷体系，并利用XRD，SEM，介温等仪器和方法分析表征样品。XRD测试结果显示，Bi（Mgl／2Ti1/2）03有助于0．15BiScO：3-0．85PbTiO3陶瓷的烧结，当x=005～0．1时，可获得单一四方相钙钛矿结构的BSMPTx陶瓷，BSMPTx体系具有较大的四方畸变度（c／a〉1．1）；介温测试表明BSMPTx体系的居里温度高于没有掺杂0．15BiScO3-0．85PbTiO，陶瓷，其居里温度Tc超过500℃，最高的居里温度组分为BSMPT01，T．～540℃：实验表明该压电陶瓷体系的弱压电活性跟较大的四方畸变有关系．

英文摘要：

（1-x）（O.15BiScO3-O.85PbTiO3）-xBi（Mg1/：Til/2）O3（BMSPTx） ceramics were prepared by conventional solid reaction. BMSPTx ceramics were characterized by XRD, SEM and dielectric-temperature characterization. The results show that X-ray diffraction （XRD） of BMSPTx indicates the perovskite phase with the single tetragonal peroviskite sructure in the range of Bi（Mgl/2Ti1/2）O3 content. Furthermore, the BMSPTx system obtained large lattice distortion （c/a〉l.1）, combining with lower piezoelectricity. It was also found that highest value of the Curie temperature （Tc=540℃） at x=0. 124.