Site-specific chirality in magnetic transitions

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• 作者：I. Ennen^a ; ^b ; ^{inga.ennen@tuwien.ac.at} ; S. Lö ; ffler^a ; C. Kü ; bel^c ; ^d ; D. Wang^d ; A. Auge^b ; A. Hü ; tten^b ; P. Schattschneider^a ; ^e
• 关键词：Dichroism ; Magnetic moment ; Electron energy loss spectrometry ; Transmission electron microscopy
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2012
• 期刊代码：31_03048853
• 类别：ph
• 出版时间：September, 2012
• 卷：324
• 期：18
• 页码：2723-2726
• 文件大小：590 K

摘要

We report site-specific energy loss magnetic dichroism measurements of the technologically interesting Heusler alloy Ni₂MnSn. In addition, we confirm the theoretical prediction that under certain conditions, two different atoms on inequivalent lattice sites give dichroic signals with opposite signs. With this, it is possible to distinguish the magnetic moments of atomic columns that are merely 1.5 脜 apart using a conventional transmission electron microscope without the need for aberration corrections.