The structure, electrical properties and phase diagram of Sm-modified BiFeO3-PbTiO3 solid solution ceramics

作     者：Xiang, Yanzi Su, Zijie Hu, Hao Kubrin, Stas P. Ter-Oganessian, Nikita V. Feng, Guobao Ren, Wei Zhang, Nan Zhuang, Jian 

作者机构：Xi An Jiao Tong Univ Key Lab Minist Educ & Int Ctr Dielect Res Sch Elect Sci & Engn Elect Mat Res Lab Xian 710049 Peoples R China Southern Fed Univ Res Inst Phys Rostov Na Donu 344090 Russia China Acad Space Technol Natl Key Lab Sci & Technol Space Microwave Xian 710100 Peoples R China 

出 版 物：《CERAMICS INTERNATIONAL》 (Ceram Int)

年 卷 期：2025年第51卷第14期

页      面：18477-18484页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Natural Science Foundation of China [12174299, 12161141012] Key Research Project of Shaanxi Province [2024GX-YBXM-328] The 111 Project" of China [B14040] 

主　　题：BiFeO3-PbTiO3 Morphotropic phase boundary Ferroelectricity Piezoelectricity Phase diagram 

摘      要：BiFeO3-PbTiO3 based materials attract lots of research interests due to the rich structure and properties variants. In this work, a series of 0.55Bi1-xSmxFeO3-0.45PbTiO3 solid solution ceramics with x = 0.1-0.3 are synthesized by sintering method. X-ray diffraction results show the phase evolution with the existence of rhombohedral and tetragonal phase in the composition range (i.e., morphotropic phase boundary, MPB) of x = 0.125-0.175. Both ferroelectric and piezoelectric properties are enhanced when approaching to MPB. Moreover, the additional thermal treatments including oxygen annealing and quenching processes are successfully employed to obtain further enhanced properties with remnant polarization Pr = 38.8 mu C/cm2 and piezoelectric coefficient d33 = 131 pC/N. Finally, the phase diagram of the ternary system BiFeO3-SmFeO3-PbTiO3 is constructed based on the results in this work and literatures, which could be valuable for efficiently developing BiFeO3-PbTiO3 based ferroic materials with desired properties.