An in-plane magnetic chiral dichroism approach for measurement of intrinsic magnetic signals using transmitted electrons

Dongsheng Song, Amir H. Tavabi, Zi-An Li, András Kovács, Ján Rusz, Wenting Huang, Gunther Richter, Rafal E. Dunin-Borkowski and Jing Zhu ()
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Dongsheng Song: 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
Amir H. Tavabi: Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich
Zi-An Li: Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich
András Kovács: Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich
Ján Rusz: Uppsala University
Wenting Huang: Institute for Applied Materials, Karlsruhe Institute of Technology
Gunther Richter: Max Planck Institute for Intelligent Systems
Rafal E. Dunin-Borkowski: Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich
Jing Zhu: 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

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract Electron energy-loss magnetic chiral dichroism is a powerful technique that allows the local magnetic properties of materials to be measured quantitatively with close-to-atomic spatial resolution and element specificity in the transmission electron microscope. Until now, the technique has been restricted to measurements of the magnetic circular dichroism signal in the electron beam direction. However, the intrinsic magnetization directions of thin samples are often oriented in the specimen plane, especially when they are examined in magnetic-field-free conditions in the transmission electron microscope. Here, we introduce an approach that allows in-plane magnetic signals to be measured using electron magnetic chiral dichroism by selecting a specific diffraction geometry. We compare experimental results recorded from a cobalt nanoplate with simulations to demonstrate that an electron magnetic chiral dichroism signal originating from in-plane magnetization can be detected successfully.

Date: 2017
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DOI: 10.1038/ncomms15348

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