Detail publikace

Controlling the Metamagnetic Phase Transition in FeRh/MnRh Superlattices and Thin-Film Fe50-xMnxRh50 Alloys

HORKÝ, M. ARREGI URIBEETXEBARRIA, J. PATEL, S. STAŇO, M. MEDAPALLI, R. CAHA, O. VOJÁČEK, L. HORÁK, M. UHLÍŘ, V. FULLERTON, E.

Originální název

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

metamagnetism; magnetic alloys and superlattices; FeRh; MnRh; epitaxy; strain engineering

Autoři

HORKÝ, M.; ARREGI URIBEETXEBARRIA, J.; PATEL, S.; STAŇO, M.; MEDAPALLI, R.; CAHA, O.; VOJÁČEK, L.; HORÁK, M.; UHLÍŘ, V.; FULLERTON, E.

Vydáno

6. 2. 2022

Nakladatel

AMER CHEMICAL SOC

Místo

WASHINGTON

ISSN

1944-8252

Periodikum

ACS applied materials & interfaces

Ročník

Číslo

Stát

Spojené státy americké

Strany od

3568

Strany do

3579

Strany počet

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"
}