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Title: Temperature-driven growth of antiferromagnetic domains in thin-film FeRh

Abstract

The evolution of the antiferromagnetic phase across the temperature-driven ferromagnetic (FM) to antiferromagnetic (AF) phase transition in epitaxial FeRh thin films was studied by x-ray magnetic linear and circular dichroism (XMLD and XMCD) and photoemission electron microscopy. By comparing XMLD and XMCD images recorded at the same temperature, the AF phase was identified, its structure directly imaged, and its evolution studied across the transition. A quantitative analysis of the correlation length of the images shows differences between the characteristic length scale of the two phases with the AF phase having a finer feature size. The asymmetry of the transition from FM to AF upon cooling and AF-FM upon heating is evidenced: upon cooling the formation of AF phase is dominated by nucleation at defects, with little subsequent growth, resulting in a small and non-random final AF domain structure, while upon heating, heterogeneous nucleation at different sites followed by significant domain size growth of the FM phase is observed, resulting in a non-reproducible final FM large domain structure.

Authors:
 [1];  [2];  [1];  [3];  [4];  [4];  [5]
+ Show Author Affiliations
  1. Univ. of California, Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States); Univ. de Rouen, St. Etienne du Rouvray (France); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1512208
Alternate Identifier(s):
OSTI ID: 1238814
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 27; Journal Issue: 25; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Baldasseroni, C., Bordel, C., Antonakos, C., Scholl, A., Stone, K. H., Kortright, J. B., and Hellman, F. Temperature-driven growth of antiferromagnetic domains in thin-film FeRh. United States: N. p., 2015. Web. doi:10.1088/0953-8984/27/25/256001.
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Baldasseroni, C., Bordel, C., Antonakos, C., Scholl, A., Stone, K. H., Kortright, J. B., & Hellman, F. Temperature-driven growth of antiferromagnetic domains in thin-film FeRh. United States. https://doi.org/10.1088/0953-8984/27/25/256001
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Baldasseroni, C., Bordel, C., Antonakos, C., Scholl, A., Stone, K. H., Kortright, J. B., and Hellman, F. Fri . "Temperature-driven growth of antiferromagnetic domains in thin-film FeRh". United States. https://doi.org/10.1088/0953-8984/27/25/256001. https://www.osti.gov/servlets/purl/1512208.
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@article{osti_1512208,
title = {Temperature-driven growth of antiferromagnetic domains in thin-film FeRh},
author = {Baldasseroni, C. and Bordel, C. and Antonakos, C. and Scholl, A. and Stone, K. H. and Kortright, J. B. and Hellman, F.},
abstractNote = {The evolution of the antiferromagnetic phase across the temperature-driven ferromagnetic (FM) to antiferromagnetic (AF) phase transition in epitaxial FeRh thin films was studied by x-ray magnetic linear and circular dichroism (XMLD and XMCD) and photoemission electron microscopy. By comparing XMLD and XMCD images recorded at the same temperature, the AF phase was identified, its structure directly imaged, and its evolution studied across the transition. A quantitative analysis of the correlation length of the images shows differences between the characteristic length scale of the two phases with the AF phase having a finer feature size. The asymmetry of the transition from FM to AF upon cooling and AF-FM upon heating is evidenced: upon cooling the formation of AF phase is dominated by nucleation at defects, with little subsequent growth, resulting in a small and non-random final AF domain structure, while upon heating, heterogeneous nucleation at different sites followed by significant domain size growth of the FM phase is observed, resulting in a non-reproducible final FM large domain structure.},
doi = {10.1088/0953-8984/27/25/256001},
journal = {Journal of Physics. Condensed Matter},
number = 25,
volume = 27,
place = {United States},
year = {Fri Jun 05 00:00:00 EDT 2015},
month = {Fri Jun 05 00:00:00 EDT 2015}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1088/0953-8984/27/25/256001
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    Colossal magnetic phase transition asymmetry in mesoscale FeRh stripes
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    Hidden Magnetic States Emergent Under Electric Field, In A Room Temperature Composite Magnetoelectric Multiferroic
    journal, November 2017

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    Topography dependence of the metamagnetic phase transition in FeRh thin films
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    Giant Controllable Magnetization Changes Induced by Structural Phase Transitions in a Metamagnetic Artificial Multiferroic
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    • Bennett, S. P.; Wong, A. T.; Glavic, A.
    • Scientific Reports, Vol. 6, Issue 1
    • DOI: 10.1038/srep22708
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