Structure and Properties of Mg-doped SrBi4Ti4O15 Bi-layered Compounds

武汉理工大学学报-材料科学版(英文版), 2008, 23(5): 675-677.

^1, , ^2, , ^3, , ^4,

1.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

2.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

3.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

4.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

基金项目: 国家自然科学基金(50472016;50502027) the main project of the Ministry of Education (MOE) of China and the Chenguang Science Plan of Wuhan(200750731268)

Structure and Properties of Mg-doped SrBi4Ti4O15 Bi-layered Compounds

HAO Huan ^1, , LIU Hanxing ^2, , CAO Minghe ^3, , OUYANG Shixi ^4,

1.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

2.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China;State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

3.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

4.State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

Keywords： Mg-doped

The structure and properties of Mg-doped SrBi4Ti4O15(SBT) were dicussed. Mg substitution into SBT had two possibilities states with the dopant amount variety. Mg cation substituted mostly into Sr2+ and the amount proportion was 68.11%.Mg ion will substitute into Ti ion site in perovskite layer when the doping amount increases. Polarization increases sharply when x=0.1 and then decreases becauses of the domain pinning. The Curie temperature of Mg-doped SBT is about 300 ℃ and there is a broad diffuse phase transition near Tc with a flat peak near the Ta of SBT.

参考文献

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