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HORKÝ, M. ARREGI URIBEETXEBARRIA, J. PATEL, S. STAŇO, M. MEDAPALLI, R. CAHA, O. VOJÁČEK, L. HORÁK, M. UHLÍŘ, V. FULLERTON, E.
Original Title
Controlling the Metamagnetic Phase Transition in FeRh/MnRh Superlattices and Thin-Film Fe50-xMnxRh50 Alloys
Type
journal article in Web of Science
Language
English
Original Abstract
Equiatomic and chemically ordered FeRh and MnRh compounds feature a first-order metamagnetic phase transition between antiferromagnetic and ferromagnetic order in the vicinity of room temperature, exhibiting interconnected structural, magnetic, and electronic order parameters. We show that these two alloys can be combined to form hybrid metamagnets in the form of sputter-deposited superlattices and alloys on single-crystalline MgO substrates. Despite being structurally different, the magnetic behavior of the alloys with substantial Mn content resembles that of the FeRh/MnRh superlattices in the ultrathin individual layer limit. For FeRh/MnRh superlattices, dissimilar lattice distortions of the constituent FeRh and MnRh layers at the antiferromagnetic-ferromagnetic transition cause double-step transitions during cooling, while the magnetization during the heating branch shows a smooth, continuous trend. For Fe(50-x)Mn(x)Rh(50 )alloy films, the substitution of Mn at the Fe sites introduces an effective tensile in-plane strain and magnetic frustration in the highly ordered epitaxial films, largely influencing the phase transition temperature T-M (by more than 150 K). In addition, Mn acts as a surfactant, enabling the growth of continuous thin films at higher temperatures. Thus, the introduction of hybrid FeRh-MnRh systems with adjustable parameters provides a pathway for the realization of tunable spintronic devices based on magnetic phase transitions.
Keywords
metamagnetism; magnetic alloys and superlattices; FeRh; MnRh; epitaxy; strain engineering
Authors
HORKÝ, M.; ARREGI URIBEETXEBARRIA, J.; PATEL, S.; STAŇO, M.; MEDAPALLI, R.; CAHA, O.; VOJÁČEK, L.; HORÁK, M.; UHLÍŘ, V.; FULLERTON, E.
Released
6. 2. 2022
Publisher
AMER CHEMICAL SOC
Location
WASHINGTON
ISBN
1944-8252
Periodical
ACS applied materials & interfaces
Year of study
14
Number
2
State
United States of America
Pages from
3568
Pages to
3579
Pages count
12
URL
https://pubs.acs.org/doi/10.1021/acsami.1c22460
BibTex
@article{BUT176681, author="Michal {Horký} and Jon Ander {Arregi Uribeetxebarria} and Sheena K. K. {Patel} and Michal {Staňo} and Rajasekhar {Medapalli} and Ondřej {Caha} and Libor {Vojáček} and Michal {Horák} and Vojtěch {Uhlíř} and E.E. {Fullerton}", title="Controlling the Metamagnetic Phase Transition in FeRh/MnRh Superlattices and Thin-Film Fe50-xMnxRh50 Alloys", journal="ACS applied materials & interfaces", year="2022", volume="14", number="2", pages="3568--3579", doi="10.1021/acsami.1c22460", issn="1944-8252", url="https://pubs.acs.org/doi/10.1021/acsami.1c22460" }