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Title: Quantitative x-ray magnetic circular dichroism mapping with high spatial resolution full-field magnetic transmission soft x-ray spectro-microscopy

Abstract

The spectroscopic analysis of X-ray magnetic circular dichroism (XMCD), which serves as strong and element-specific magnetic contrast in full-field magnetic transmission soft x-ray microscopy, is shown to provide information on the local distribution of spin (S) and orbital (L) magnetic moments down to a spatial resolution of 25 nm limited by the x-ray optics used in the x-ray microscope. The spatially resolved L/S ratio observed in a multilayered (Co 0.3 nm/Pt 0.5 nm) × 30 thin film exhibiting a strong perpendicular magnetic anisotropy decreases significantly in the vicinity of domain walls, indicating a non-uniform spin configuration in the vertical profile of a domain wall across the thin film. Quantitative XMCD mapping with x-ray spectro-microscopy will become an important characterization tool for systems with topological or engineered magnetization inhomogeneities.

Authors:
 [1];  [2];  [3];  [2];  [4];  [5];  [1];  [6];  [1];  [2]
  1. Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  2. (United States)
  3. Physics Department, University of California, Berkeley, California 94720 (United States)
  4. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  5. National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  6. (Korea, Republic of)
Publication Date:
OSTI Identifier:
22410071
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANISOTROPY; DOMAIN STRUCTURE; LAYERS; MAGNETIC CIRCULAR DICHROISM; MAGNETIC FIELDS; MAGNETIC MOMENTS; MAGNETIZATION; MAPPING; MICROSCOPY; SOFT X RADIATION; SPATIAL RESOLUTION; SPIN; THIN FILMS; TOPOLOGY

Citation Formats

Robertson, MacCallum J., Physics Department, University of California, Berkeley, California 94720, Agostino, Christopher J., National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720, N'Diaye, Alpha T., Chen, Gong, Im, Mi-Young, Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu 711-873, Fischer, Peter, E-mail: PJFischer@lbl.gov, and Physics Department, University of California, Santa Cruz, California 94056. Quantitative x-ray magnetic circular dichroism mapping with high spatial resolution full-field magnetic transmission soft x-ray spectro-microscopy. United States: N. p., 2015. Web. doi:10.1063/1.4918691.
Robertson, MacCallum J., Physics Department, University of California, Berkeley, California 94720, Agostino, Christopher J., National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720, N'Diaye, Alpha T., Chen, Gong, Im, Mi-Young, Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu 711-873, Fischer, Peter, E-mail: PJFischer@lbl.gov, & Physics Department, University of California, Santa Cruz, California 94056. Quantitative x-ray magnetic circular dichroism mapping with high spatial resolution full-field magnetic transmission soft x-ray spectro-microscopy. United States. doi:10.1063/1.4918691.
Robertson, MacCallum J., Physics Department, University of California, Berkeley, California 94720, Agostino, Christopher J., National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720, N'Diaye, Alpha T., Chen, Gong, Im, Mi-Young, Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu 711-873, Fischer, Peter, E-mail: PJFischer@lbl.gov, and Physics Department, University of California, Santa Cruz, California 94056. Thu . "Quantitative x-ray magnetic circular dichroism mapping with high spatial resolution full-field magnetic transmission soft x-ray spectro-microscopy". United States. doi:10.1063/1.4918691.
@article{osti_22410071,
title = {Quantitative x-ray magnetic circular dichroism mapping with high spatial resolution full-field magnetic transmission soft x-ray spectro-microscopy},
author = {Robertson, MacCallum J. and Physics Department, University of California, Berkeley, California 94720 and Agostino, Christopher J. and National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, Berkeley, California 94720 and N'Diaye, Alpha T. and Chen, Gong and Im, Mi-Young and Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu 711-873 and Fischer, Peter, E-mail: PJFischer@lbl.gov and Physics Department, University of California, Santa Cruz, California 94056},
abstractNote = {The spectroscopic analysis of X-ray magnetic circular dichroism (XMCD), which serves as strong and element-specific magnetic contrast in full-field magnetic transmission soft x-ray microscopy, is shown to provide information on the local distribution of spin (S) and orbital (L) magnetic moments down to a spatial resolution of 25 nm limited by the x-ray optics used in the x-ray microscope. The spatially resolved L/S ratio observed in a multilayered (Co 0.3 nm/Pt 0.5 nm) × 30 thin film exhibiting a strong perpendicular magnetic anisotropy decreases significantly in the vicinity of domain walls, indicating a non-uniform spin configuration in the vertical profile of a domain wall across the thin film. Quantitative XMCD mapping with x-ray spectro-microscopy will become an important characterization tool for systems with topological or engineered magnetization inhomogeneities.},
doi = {10.1063/1.4918691},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}