Study on superstructure in ion co-doped BiFeO3 by using transmission electron microscopy

doi:10.1088/1674-1056/24/4/046101

›› 2015, Vol. 24 ›› Issue (4): 46101-046101.doi: 10.1088/1674-1056/24/4/046101

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Study on superstructure in ion co-doped BiFeO₃ by using transmission electron microscopy

蒲十周^{a b}, 郭超^{a b}, 李美亚^a, 陈珍莲^c, 邹化民^{a b}

a Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China;
b Center for Electron Microscopy, Wuhan University, Wuhan 430072, China;
c Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

收稿日期:2014-09-26 修回日期:2014-10-30 出版日期:2015-04-05 发布日期:2015-04-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51372174, 11074193, and 51132001) and the Fundamental Research Funds for the Central Universities.

Study on superstructure in ion co-doped BiFeO₃ by using transmission electron microscopy

Pu Shi-Zhou (蒲十周)^{a b}, Guo Chao (郭超)^{a b}, Li Mei-Ya (李美亚)^a, Chen Zhen-Lian (陈珍莲)^c, Zou Hua-Min (邹化民)^{a b}

a Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education and School of Physics and Technology, Wuhan University, Wuhan 430072, China;
b Center for Electron Microscopy, Wuhan University, Wuhan 430072, China;
c Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

Received:2014-09-26 Revised:2014-10-30 Online:2015-04-05 Published:2015-04-05
Contact: Zou Hua-Min E-mail:hmzou@whu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51372174, 11074193, and 51132001) and the Fundamental Research Funds for the Central Universities.

摘要/Abstract

摘要： La³⁺ and V⁵⁺ co-doped BiFeO₃ ceramics are synthesized by rapid liquid sintering technique. The modulated structure in Bi_0.85La_0.15Fe_0.97V_0.03O₃ is investigated by using transmission electron microscopy (TEM). Two kinds of superstructures are observed in the samples. One is the component modulated superstructure and twin-domain, which is generated by La³⁺ ordered substitution for Bi³⁺ and frequently appears. The chemical composition of the superstructure is explored by x-ray energy dispersive spectroscopy (EDS). The model of the ordered structure is proposed. Simulation based on the model is conducted. The second is the fluorite-type δ-Bi₂O₃ related superstructure. The relation between the ferroelectric property and the microstructure of the sample is also discussed.

关键词: multiferroic materials, superstructure, co-doped, rapid liquid sintering technique

Abstract: La³⁺ and V⁵⁺ co-doped BiFeO₃ ceramics are synthesized by rapid liquid sintering technique. The modulated structure in Bi_0.85La_0.15Fe_0.97V_0.03O₃ is investigated by using transmission electron microscopy (TEM). Two kinds of superstructures are observed in the samples. One is the component modulated superstructure and twin-domain, which is generated by La³⁺ ordered substitution for Bi³⁺ and frequently appears. The chemical composition of the superstructure is explored by x-ray energy dispersive spectroscopy (EDS). The model of the ordered structure is proposed. Simulation based on the model is conducted. The second is the fluorite-type δ-Bi₂O₃ related superstructure. The relation between the ferroelectric property and the microstructure of the sample is also discussed.

Key words: multiferroic materials, superstructure, co-doped, rapid liquid sintering technique

中图分类号: (Convergent-beam electron diffraction, selected-area electron diffraction, nanodiffraction)

61.05.jm

77.80.Dj (Domain structure; hysteresis) 61.72.-y (Defects and impurities in crystals; microstructure)

蒲十周, 郭超, 李美亚, 陈珍莲, 邹化民. Study on superstructure in ion co-doped BiFeO₃ by using transmission electron microscopy[J]. , 2015, 24(4): 46101-046101.

Pu Shi-Zhou (蒲十周), Guo Chao (郭超), Li Mei-Ya (李美亚), Chen Zhen-Lian (陈珍莲), Zou Hua-Min (邹化民). Study on superstructure in ion co-doped BiFeO₃ by using transmission electron microscopy[J]. Chin. Phys. B, 2015, 24(4): 46101-046101.

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Study on superstructure in ion co-doped BiFeO₃ by using transmission electron microscopy

Study on superstructure in ion co-doped BiFeO₃ by using transmission electron microscopy

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