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

Journal Article · · Journal of Physics. D, Applied Physics

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.

Research Organization:
Univ. of California, San Diego, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Grant Agency of the Czech Republic; Ministry of Education, Youth and Sports of the Czech Republic
Grant/Contract Number:
SC0003678
OSTI ID:
1547292
Journal Information:
Journal of Physics. D, Applied Physics, Vol. 51, Issue 10; ISSN 0022-3727
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 18 works
Citation information provided by
Web of Science

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Cited By (4)

Compositional dependence of Gilbert damping constant of epitaxial Fe 100– x Rh x thin films journal September 2019
Antiferromagnetic-ferromagnetic phase domain development in nanopatterned FeRh islands journal October 2018
Antiferromagnetic-ferromagnetic phase domain development in nanopatterned FeRh islands text January 2018
Preserving Metamagnetism in Self-Assembled FeRh Nanomagnets journal January 2023

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