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Title: X-ray magnetic circular dichroism study of epitaxial magnetite ultrathin film on MgO(100)

Abstract

The spin and orbital magnetic moments of the Fe{sub 3}O{sub 4} epitaxial ultrathin film synthesized by plasma assisted simultaneous oxidization on MgO(100) have been studied with X-ray magnetic circular dichroism. The ultrathin film retains a rather large total magnetic moment, i.e., (2.73 ± 0.15) μ{sub B}/f.u., which is ∼70% of that for the bulk-like Fe{sub 3}O{sub 4}. A significant unquenched orbital moment up to 0.54 ± 0.05 μ{sub B}/f.u. was observed, which could come from the symmetry breaking at the Fe{sub 3}O{sub 4}/MgO interface. Such sizable orbital moment will add capacities to the Fe{sub 3}O{sub 4}-based spintronics devices in the magnetization reversal by the electric field.

Authors:
;  [1];  [2]; ;  [3]; ;  [4]; ;  [5]; ; ;  [6];  [1]
  1. York-Nanjing International Center for Spintronics (YNICS), School of Electronics Science and Engineering, Nanjing University, Nanjing 210093 (China)
  2. (United Kingdom)
  3. Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan (China)
  4. Spintronics and Nanodevice Laboratory, Department of Electronics, University of York, York YO10 5DD (United Kingdom)
  5. IBM Research Division, Almaden Research Center, San Jose, California 95120 (United States)
  6. Diamond Light Source, Didcot OX11 0DE (United Kingdom)
Publication Date:
OSTI Identifier:
22410136
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:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL STRUCTURE; ELECTRIC FIELDS; EPITAXY; FERRITES; INTERFACES; IRON OXIDES; MAGNESIUM OXIDES; MAGNETIC CIRCULAR DICHROISM; MAGNETIC MOMENTS; MAGNETITE; MAGNETIZATION; SPIN; SYMMETRY BREAKING; THIN FILMS; X RADIATION

Citation Formats

Liu, W. Q., Xu, Y. B., E-mail: yongbing.xu@york.ac.uk, E-mail: rzhang@nju.edu.cn, Spintronics and Nanodevice Laboratory, Department of Electronics, University of York, York YO10 5DD, Song, M. Y., Lin, J. G., Maltby, N. J., Li, S. P., Samant, M. G., Parkin, S. S. P., Bencok, P., Steadman, Paul, Dobrynin, Alexey, and Zhang, R., E-mail: yongbing.xu@york.ac.uk, E-mail: rzhang@nju.edu.cn. X-ray magnetic circular dichroism study of epitaxial magnetite ultrathin film on MgO(100). United States: N. p., 2015. Web. doi:10.1063/1.4916296.
Liu, W. Q., Xu, Y. B., E-mail: yongbing.xu@york.ac.uk, E-mail: rzhang@nju.edu.cn, Spintronics and Nanodevice Laboratory, Department of Electronics, University of York, York YO10 5DD, Song, M. Y., Lin, J. G., Maltby, N. J., Li, S. P., Samant, M. G., Parkin, S. S. P., Bencok, P., Steadman, Paul, Dobrynin, Alexey, & Zhang, R., E-mail: yongbing.xu@york.ac.uk, E-mail: rzhang@nju.edu.cn. X-ray magnetic circular dichroism study of epitaxial magnetite ultrathin film on MgO(100). United States. doi:10.1063/1.4916296.
Liu, W. Q., Xu, Y. B., E-mail: yongbing.xu@york.ac.uk, E-mail: rzhang@nju.edu.cn, Spintronics and Nanodevice Laboratory, Department of Electronics, University of York, York YO10 5DD, Song, M. Y., Lin, J. G., Maltby, N. J., Li, S. P., Samant, M. G., Parkin, S. S. P., Bencok, P., Steadman, Paul, Dobrynin, Alexey, and Zhang, R., E-mail: yongbing.xu@york.ac.uk, E-mail: rzhang@nju.edu.cn. Thu . "X-ray magnetic circular dichroism study of epitaxial magnetite ultrathin film on MgO(100)". United States. doi:10.1063/1.4916296.
@article{osti_22410136,
title = {X-ray magnetic circular dichroism study of epitaxial magnetite ultrathin film on MgO(100)},
author = {Liu, W. Q. and Xu, Y. B., E-mail: yongbing.xu@york.ac.uk, E-mail: rzhang@nju.edu.cn and Spintronics and Nanodevice Laboratory, Department of Electronics, University of York, York YO10 5DD and Song, M. Y. and Lin, J. G. and Maltby, N. J. and Li, S. P. and Samant, M. G. and Parkin, S. S. P. and Bencok, P. and Steadman, Paul and Dobrynin, Alexey and Zhang, R., E-mail: yongbing.xu@york.ac.uk, E-mail: rzhang@nju.edu.cn},
abstractNote = {The spin and orbital magnetic moments of the Fe{sub 3}O{sub 4} epitaxial ultrathin film synthesized by plasma assisted simultaneous oxidization on MgO(100) have been studied with X-ray magnetic circular dichroism. The ultrathin film retains a rather large total magnetic moment, i.e., (2.73 ± 0.15) μ{sub B}/f.u., which is ∼70% of that for the bulk-like Fe{sub 3}O{sub 4}. A significant unquenched orbital moment up to 0.54 ± 0.05 μ{sub B}/f.u. was observed, which could come from the symmetry breaking at the Fe{sub 3}O{sub 4}/MgO interface. Such sizable orbital moment will add capacities to the Fe{sub 3}O{sub 4}-based spintronics devices in the magnetization reversal by the electric field.},
doi = {10.1063/1.4916296},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}