中国物理B ›› 2014, Vol. 23 ›› Issue (4): 47701-047701.doi: 10.1088/1674-1056/23/4/047701

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

La-doped BiFeO3:Synthesis and multiferroic property study

蔺鹏婷a, 李祥a, 张丽a, 阴津华b, 程兴旺a, 王志宏c, 吴玉娟d, 吴光恒c   

  1. a School for Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;
    b Physics Department, University of Science & Technology of Beijing, Beijing 100083, China;
    c State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    d Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taiwan, China
  • 收稿日期:2013-09-25 修回日期:2013-10-30 出版日期:2014-04-15 发布日期:2014-04-15

La-doped BiFeO3:Synthesis and multiferroic property study

Lin Peng-Ting (蔺鹏婷)a, Li Xiang (李祥)a, Zhang Li (张丽)a, Yin Jin-Hua (阴津华)b, Cheng Xing-Wang (程兴旺)a, Wang Zhi-Hong (王志宏)c, Wu Yu-Chuan (吴玉娟)d, Wu Guang-Heng (吴光恒)c   

  1. a School for Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;
    b Physics Department, University of Science & Technology of Beijing, Beijing 100083, China;
    c State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    d Department of Materials and Mineral Resources Engineering, National Taipei University of Technology, Taiwan, China
  • Received:2013-09-25 Revised:2013-10-30 Online:2014-04-15 Published:2014-04-15
  • Contact: Li Xiang E-mail:aihyoo@bit.edu.cn
  • About author:77.80.Dj; 77.84.-s; 81.20.Ka

摘要: A new sol-foam-gel method was developed to fabricate La-doped BiFeO3 multiferroic materials. It was demonstrated that a gradual increase in the content of La-doped into BiFeO3 results in its structure changing from rhombohedral to orthorhombic. A study of other property changes indicates that La-doping in BiFeO3 enhances its ferromagnetism and ferroelectricity. A temperature-dependent magnetization study suggests that the magnetic property of La-doped BiFeO3 samples varied from antiferromagnetic to ferromagnetic as the content of La-doped into BiFeO3 increased from 0 to 20%. Unique temperature-dependent zero field cooling (ZFC) and field cooling (FC) magnetization behaviors were observed in 15% La-doped BiFeO3 – its ZFC temperature-dependent magnetization being ferromagnetic and its FC temperature-dependent magnetization being antiferromagnetic. A possible mechanism of such an interesting M-T behavior is discussed.

关键词: multiferroic, BiFeO3, ferromagnetism

Abstract: A new sol-foam-gel method was developed to fabricate La-doped BiFeO3 multiferroic materials. It was demonstrated that a gradual increase in the content of La-doped into BiFeO3 results in its structure changing from rhombohedral to orthorhombic. A study of other property changes indicates that La-doping in BiFeO3 enhances its ferromagnetism and ferroelectricity. A temperature-dependent magnetization study suggests that the magnetic property of La-doped BiFeO3 samples varied from antiferromagnetic to ferromagnetic as the content of La-doped into BiFeO3 increased from 0 to 20%. Unique temperature-dependent zero field cooling (ZFC) and field cooling (FC) magnetization behaviors were observed in 15% La-doped BiFeO3 – its ZFC temperature-dependent magnetization being ferromagnetic and its FC temperature-dependent magnetization being antiferromagnetic. A possible mechanism of such an interesting M-T behavior is discussed.

Key words: multiferroic, BiFeO3, ferromagnetism

中图分类号:  (Domain structure; hysteresis)

  • 77.80.Dj
77.84.-s (Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials) 81.20.Ka (Chemical synthesis; combustion synthesis)