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Title: Effect of capping material on interfacial ferromagnetism in FeRh thin films

Abstract

The role of the capping material in stabilizing a thin ferromagnetic layer at the interface between a FeRh film and cap in the nominally antiferromagnetic phase at room temperature was studied by x-ray magnetic circular dichroism in photoemission electron microscopy and polarized neutron reflectivity. These techniques were used to determine the presence or absence of interfacial ferromagnetism (FM) in films capped with different oxides and metals. Chemically stable oxide caps do not generate any interfacial FM while the effect of metallic caps depends on the element, showing that interfacial FM is due to metallic interdiffusion and the formation of a ternary alloy with a modified antiferromagnetic to ferromagnetic transition temperature.

Authors:
 [1];  [2];  [3];  [4];  [4];  [4];  [2];  [2];  [5];  [5];  [6]
  1. Univ. of California, Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Davis, CA (United States)
  3. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. de Rouen (France)
  4. Helmholtz Zentrum-Berlin für Materialien und Energie GmbH (Germany)
  5. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Neutron Research
  6. Univ. of California, Berkeley, CA (United States); 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), Basic Energy Sciences (BES) (SC-22), Materials Sciences & Engineering Division (SC-22.2)
OSTI Identifier:
1511382
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 115; Journal Issue: 4; Journal ID: ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Baldasseroni, C., Pálsson, G. K., Bordel, C., Valencia, S., Unal, A. A., Kronast, F., Nemsak, S., Fadley, C. S., Borchers, J. A., Maranville, B. B., and Hellman, F. Effect of capping material on interfacial ferromagnetism in FeRh thin films. United States: N. p., 2014. Web. doi:10.1063/1.4862961.
Baldasseroni, C., Pálsson, G. K., Bordel, C., Valencia, S., Unal, A. A., Kronast, F., Nemsak, S., Fadley, C. S., Borchers, J. A., Maranville, B. B., & Hellman, F. Effect of capping material on interfacial ferromagnetism in FeRh thin films. United States. doi:10.1063/1.4862961.
Baldasseroni, C., Pálsson, G. K., Bordel, C., Valencia, S., Unal, A. A., Kronast, F., Nemsak, S., Fadley, C. S., Borchers, J. A., Maranville, B. B., and Hellman, F. Fri . "Effect of capping material on interfacial ferromagnetism in FeRh thin films". United States. doi:10.1063/1.4862961. https://www.osti.gov/servlets/purl/1511382.
@article{osti_1511382,
title = {Effect of capping material on interfacial ferromagnetism in FeRh thin films},
author = {Baldasseroni, C. and Pálsson, G. K. and Bordel, C. and Valencia, S. and Unal, A. A. and Kronast, F. and Nemsak, S. and Fadley, C. S. and Borchers, J. A. and Maranville, B. B. and Hellman, F.},
abstractNote = {The role of the capping material in stabilizing a thin ferromagnetic layer at the interface between a FeRh film and cap in the nominally antiferromagnetic phase at room temperature was studied by x-ray magnetic circular dichroism in photoemission electron microscopy and polarized neutron reflectivity. These techniques were used to determine the presence or absence of interfacial ferromagnetism (FM) in films capped with different oxides and metals. Chemically stable oxide caps do not generate any interfacial FM while the effect of metallic caps depends on the element, showing that interfacial FM is due to metallic interdiffusion and the formation of a ternary alloy with a modified antiferromagnetic to ferromagnetic transition temperature.},
doi = {10.1063/1.4862961},
journal = {Journal of Applied Physics},
number = 4,
volume = 115,
place = {United States},
year = {2014},
month = {1}
}

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Cited by: 21 works
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Works referenced in this record:

The exchange-spring magnet: a new material principle for permanent magnets
journal, July 1991

  • Kneller, E. F.; Hawig, R.
  • IEEE Transactions on Magnetics, Vol. 27, Issue 4, p. 3588-3560
  • DOI: 10.1109/20.102931