中国物理B ›› 2018, Vol. 27 ›› Issue (5): 56801-056801.doi: 10.1088/1674-1056/27/5/056801

所属专题: TOPICAL REVIEW — Electron microscopy methods for emergent materials and life sciences

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Quantitative measurement of magnetic parameters by electron magnetic chiral dichroism

Dong-Sheng Song(宋东升), Zi-Qiang Wang(王自强), Xiao-Yan Zhong(钟虓龑), Jing Zhu(朱静)   

  1. National Center for Electron Microscopy in Beijing;Key Laboratory of Advanced Materials(MOE) and the State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • 收稿日期:2018-01-25 修回日期:2018-03-01 出版日期:2018-05-05 发布日期:2018-05-05
  • 通讯作者: Dong-Sheng Song, Jing Zhu E-mail:todongsheng@126.com;jzhu@mail.tsinghua.edu.cn

Quantitative measurement of magnetic parameters by electron magnetic chiral dichroism

Dong-Sheng Song(宋东升), Zi-Qiang Wang(王自强), Xiao-Yan Zhong(钟虓龑), Jing Zhu(朱静)   

  1. National Center for Electron Microscopy in Beijing;Key Laboratory of Advanced Materials(MOE) and the State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2018-01-25 Revised:2018-03-01 Online:2018-05-05 Published:2018-05-05
  • Contact: Dong-Sheng Song, Jing Zhu E-mail:todongsheng@126.com;jzhu@mail.tsinghua.edu.cn

摘要: Electron magnetic circular dichroism opens a new door to explore magnetic properties by transmitted electrons in the transmission electron microscope. However, obtaining quantitative magnetic parameters, such as spin and orbital magnetic moment with element-specificity, goes a long way along with the development and improvement of this technique both in theoretical and experimental aspects. In this review, we will give a detailed description of the quantitative electron magnetic circular dichroism (EMCD) technique to measure magnetic parameters with spin-specificity, element-specificity, site-specificity, and orbital-spin-specificity. The discussion completely contains the procedures from raw experimental data acquisition to final magnetic parameters, together with the related custom code we have developed.

关键词: quantitative electron magnetic circular dichroism (EMCD) technique, dynamical diffraction effects, spin and orbital magnetic moment

Abstract: Electron magnetic circular dichroism opens a new door to explore magnetic properties by transmitted electrons in the transmission electron microscope. However, obtaining quantitative magnetic parameters, such as spin and orbital magnetic moment with element-specificity, goes a long way along with the development and improvement of this technique both in theoretical and experimental aspects. In this review, we will give a detailed description of the quantitative electron magnetic circular dichroism (EMCD) technique to measure magnetic parameters with spin-specificity, element-specificity, site-specificity, and orbital-spin-specificity. The discussion completely contains the procedures from raw experimental data acquisition to final magnetic parameters, together with the related custom code we have developed.

Key words: quantitative electron magnetic circular dichroism (EMCD) technique, dynamical diffraction effects, spin and orbital magnetic moment

中图分类号:  (Transmission electron microscopy (TEM))

  • 68.37.Lp
61.05.jd (Theories of electron diffraction and scattering) 07.55.Jg (Magnetometers for susceptibility, magnetic moment, and magnetization measurements)