Quantitative measurement of magnetic parameters by electron magnetic chiral dichroism

doi:10.1088/1674-1056/27/5/056801

摘要/Abstract

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)

宋东升, 王自强, 钟虓龑, 朱静. Quantitative measurement of magnetic parameters by electron magnetic chiral dichroism[J]. 中国物理B, 2018, 27(5): 56801-056801.

Dong-Sheng Song(宋东升), Zi-Qiang Wang(王自强), Xiao-Yan Zhong(钟虓龑), Jing Zhu(朱静). Quantitative measurement of magnetic parameters by electron magnetic chiral dichroism[J]. Chin. Phys. B, 2018, 27(5): 56801-056801.

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