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Title: Magnetization reversal and confinement effects across the metamagnetic phase transition in mesoscale FeRh structures

Abstract

The results of mesoscale confinement on the metamagnetic behavior of lithographically patterned FeRh structures are investigated via Kerr microscopy. Combining the temperature- and field-dependent magnetization reversal of individual sub-micron FeRh structures provides specific phase-transition characteristics of single mesoscale objects. Relaxation of the epitaxial strain caused by patterning lowers the metamagnetic phase transition temperature by more than 15 K upon confining FeRh films below 500 nm in one lateral dimension. We also discuss that the phase transition becomes highly asymmetric when comparing the cooling and heating cycles for 300 nm-wide FeRh structures. The investigation of FeRh under lateral confinement provides an interesting platform to explore emergent metamagnetic phenomena arising from the interplay of the structural, magnetic and electronic degrees of freedom at the mesoscopic length scale.

Authors:
ORCiD logo [1];  [1];  [1];  [2]; ORCiD logo [2]; ORCiD logo [1]
  1. Brno Univ. of Technology (Czech Republic)
  2. Univ. of California, San Diego, CA (United States)
Publication Date:
Research Org.:
Univ. of California, San Diego, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Grant Agency of the Czech Republic; Ministry of Education, Youth and Sports of the Czech Republic
OSTI Identifier:
1547292
Grant/Contract Number:  
SC0003678
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. D, Applied Physics
Additional Journal Information:
Journal Volume: 51; Journal Issue: 10; Journal ID: ISSN 0022-3727
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Arregi, Jon Ander, Horký, Michal, Fabianová, Kateřina, Tolley, Robert, Fullerton, Eric E., and Uhlíř, Vojtěch. Magnetization reversal and confinement effects across the metamagnetic phase transition in mesoscale FeRh structures. United States: N. p., 2018. Web. doi:10.1088/1361-6463/aaaa5a.
Arregi, Jon Ander, Horký, Michal, Fabianová, Kateřina, Tolley, Robert, Fullerton, Eric E., & Uhlíř, Vojtěch. Magnetization reversal and confinement effects across the metamagnetic phase transition in mesoscale FeRh structures. United States. doi:10.1088/1361-6463/aaaa5a.
Arregi, Jon Ander, Horký, Michal, Fabianová, Kateřina, Tolley, Robert, Fullerton, Eric E., and Uhlíř, Vojtěch. Thu . "Magnetization reversal and confinement effects across the metamagnetic phase transition in mesoscale FeRh structures". United States. doi:10.1088/1361-6463/aaaa5a. https://www.osti.gov/servlets/purl/1547292.
@article{osti_1547292,
title = {Magnetization reversal and confinement effects across the metamagnetic phase transition in mesoscale FeRh structures},
author = {Arregi, Jon Ander and Horký, Michal and Fabianová, Kateřina and Tolley, Robert and Fullerton, Eric E. and Uhlíř, Vojtěch},
abstractNote = {The results of mesoscale confinement on the metamagnetic behavior of lithographically patterned FeRh structures are investigated via Kerr microscopy. Combining the temperature- and field-dependent magnetization reversal of individual sub-micron FeRh structures provides specific phase-transition characteristics of single mesoscale objects. Relaxation of the epitaxial strain caused by patterning lowers the metamagnetic phase transition temperature by more than 15 K upon confining FeRh films below 500 nm in one lateral dimension. We also discuss that the phase transition becomes highly asymmetric when comparing the cooling and heating cycles for 300 nm-wide FeRh structures. The investigation of FeRh under lateral confinement provides an interesting platform to explore emergent metamagnetic phenomena arising from the interplay of the structural, magnetic and electronic degrees of freedom at the mesoscopic length scale.},
doi = {10.1088/1361-6463/aaaa5a},
journal = {Journal of Physics. D, Applied Physics},
number = 10,
volume = 51,
place = {United States},
year = {2018},
month = {2}
}

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Cited by: 2 works
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