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Title: Large moments in bcc Fe xCo yMn z ternary alloy thin films

Abstract

The elemental magnetic moments and the average atomic moment of 10-20 nm thick single crystal bcc (bct) Fe xCo yMn z films deposited on MgO(001) have been determined as a function of a broad range of compositions. Thin film epitaxy stabilized the bcc structure for 80% of the available ternary compositional space compared to only a 23% stability region for the bulk. The films that display ferromagnetism represent 60% of the available compositional possibilities compared to 25% for the bulk. A maximum average atomic moment of 3.25 ± 0.3 μ B/atom was observed for a bcc Fe 9Co 62Mn 29 film (well above the limit of the Slater-Pauling binary alloy curve of 2.45 μ B/atom). Furthermore, the Fe xCo yMn z ternary alloys that exhibit high moments can only be synthesized as ultrathin films since the bcc structure is not stable in the bulk for those compositions.

Authors:
 [1];  [1]; ORCiD logo [2];  [2]; ORCiD logo [1]
  1. Montana State Univ., Bozeman, MT (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1530335
Alternate Identifier(s):
OSTI ID: 1420355
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 112; Journal Issue: 7; Journal ID: ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English

Citation Formats

Snow, R. J., Bhatkar, H., N'Diaye, A. T., Arenholz, E., and Idzerda, Y. U. Large moments in bcc FexCoyMnz ternary alloy thin films. United States: N. p., 2018. Web. doi:10.1063/1.5006347.
Snow, R. J., Bhatkar, H., N'Diaye, A. T., Arenholz, E., & Idzerda, Y. U. Large moments in bcc FexCoyMnz ternary alloy thin films. United States. doi:10.1063/1.5006347.
Snow, R. J., Bhatkar, H., N'Diaye, A. T., Arenholz, E., and Idzerda, Y. U. Mon . "Large moments in bcc FexCoyMnz ternary alloy thin films". United States. doi:10.1063/1.5006347. https://www.osti.gov/servlets/purl/1530335.
@article{osti_1530335,
title = {Large moments in bcc FexCoyMnz ternary alloy thin films},
author = {Snow, R. J. and Bhatkar, H. and N'Diaye, A. T. and Arenholz, E. and Idzerda, Y. U.},
abstractNote = {The elemental magnetic moments and the average atomic moment of 10-20 nm thick single crystal bcc (bct) FexCoyMnz films deposited on MgO(001) have been determined as a function of a broad range of compositions. Thin film epitaxy stabilized the bcc structure for 80% of the available ternary compositional space compared to only a 23% stability region for the bulk. The films that display ferromagnetism represent 60% of the available compositional possibilities compared to 25% for the bulk. A maximum average atomic moment of 3.25 ± 0.3 μB/atom was observed for a bcc Fe9Co62Mn29 film (well above the limit of the Slater-Pauling binary alloy curve of 2.45 μB/atom). Furthermore, the FexCoyMnz ternary alloys that exhibit high moments can only be synthesized as ultrathin films since the bcc structure is not stable in the bulk for those compositions.},
doi = {10.1063/1.5006347},
journal = {Applied Physics Letters},
number = 7,
volume = 112,
place = {United States},
year = {2018},
month = {2}
}

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Cited by: 2 works
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