Magnetocrystalline anisotropy of epitaxially grown FeRh/MgO(001) films

Xiaoyan Zhu; Yang Li; Yali Xie; Qian Qiu; Cuimei Cao; Xiao Hu; Wenhui Xie; Tian Shang; Yang Xu; Lin Sun; Wenjuan Cheng; Dongmei Jiang; Qingfeng Zhan

doi:10.1016/j.jallcom.2022.165566

Magnetocrystalline anisotropy of epitaxially grown FeRh/MgO(001) films

Xiaoyan Zhu, Yang Li, Yali Xie, Qian Qiu, Cuimei Cao, Xiao Hu, Wenhui Xie, Tian Shang, Yang Xu, Lin Sun, Wenjuan Cheng, Dongmei Jiang, Qingfeng Zhan

School of Physics and Electronic Science

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

We quantitatively investigated the magnetocrystalline anisotropy (MCA) of metamagnetic FeRh films epitaxially grown on MgO(001) substrates. The in-plane fourfold magnetic anisotropy of epitaxial FeRh films is reoriented from the<100>to<110>directions and meanwhile the strength is obvious enhanced when FeRh transfers from the ferromagnetic (FM) to antiferromagnetic (AF) states. In the nominal AF state, the observed fourfold magnetic anisotropy originates from the exchange coupling between the residual FM moments caused by antisite defects and the AF matrix, which therefore indicates the orientation and strength of the MCA of AF FeRh. The steep increase of the FM resonance linewidth when crossing the FM-AF phase transition temperature reveals the enhanced effective magnetic damping and an increased fourfold anisotropic two-magnon scattering. The first-principles calculations suggest that the in-plane lattice compressive strain imposed by the MgO substrate plays an important role in determining the magnetic structures FeRh films.

Original language	English
Article number	165566
Journal	Journal of Alloys and Compounds
Volume	917
DOIs	https://doi.org/10.1016/j.jallcom.2022.165566
State	Published - 5 Oct 2022

Keywords

Epitaxial film
FeRh
Magnetic structure
Magnetocrystalline anisotropy
Phase transition

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10.1016/j.jallcom.2022.165566

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@article{741da2e1640645008c88ab81b0c43415,

title = "Magnetocrystalline anisotropy of epitaxially grown FeRh/MgO(001) films",

abstract = "We quantitatively investigated the magnetocrystalline anisotropy (MCA) of metamagnetic FeRh films epitaxially grown on MgO(001) substrates. The in-plane fourfold magnetic anisotropy of epitaxial FeRh films is reoriented from the<100>to<110>directions and meanwhile the strength is obvious enhanced when FeRh transfers from the ferromagnetic (FM) to antiferromagnetic (AF) states. In the nominal AF state, the observed fourfold magnetic anisotropy originates from the exchange coupling between the residual FM moments caused by antisite defects and the AF matrix, which therefore indicates the orientation and strength of the MCA of AF FeRh. The steep increase of the FM resonance linewidth when crossing the FM-AF phase transition temperature reveals the enhanced effective magnetic damping and an increased fourfold anisotropic two-magnon scattering. The first-principles calculations suggest that the in-plane lattice compressive strain imposed by the MgO substrate plays an important role in determining the magnetic structures FeRh films.",

keywords = "Epitaxial film, FeRh, Magnetic structure, Magnetocrystalline anisotropy, Phase transition",

author = "Xiaoyan Zhu and Yang Li and Yali Xie and Qian Qiu and Cuimei Cao and Xiao Hu and Wenhui Xie and Tian Shang and Yang Xu and Lin Sun and Wenjuan Cheng and Dongmei Jiang and Qingfeng Zhan",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

year = "2022",

month = oct,

day = "5",

doi = "10.1016/j.jallcom.2022.165566",

language = "英语",

volume = "917",

journal = "Journal of Alloys and Compounds",

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TY - JOUR

T1 - Magnetocrystalline anisotropy of epitaxially grown FeRh/MgO(001) films

AU - Zhu, Xiaoyan

AU - Li, Yang

AU - Xie, Yali

AU - Qiu, Qian

AU - Cao, Cuimei

AU - Hu, Xiao

AU - Xie, Wenhui

AU - Shang, Tian

AU - Xu, Yang

AU - Sun, Lin

AU - Cheng, Wenjuan

AU - Jiang, Dongmei

AU - Zhan, Qingfeng

PY - 2022/10/5

Y1 - 2022/10/5

N2 - We quantitatively investigated the magnetocrystalline anisotropy (MCA) of metamagnetic FeRh films epitaxially grown on MgO(001) substrates. The in-plane fourfold magnetic anisotropy of epitaxial FeRh films is reoriented from the<100>to<110>directions and meanwhile the strength is obvious enhanced when FeRh transfers from the ferromagnetic (FM) to antiferromagnetic (AF) states. In the nominal AF state, the observed fourfold magnetic anisotropy originates from the exchange coupling between the residual FM moments caused by antisite defects and the AF matrix, which therefore indicates the orientation and strength of the MCA of AF FeRh. The steep increase of the FM resonance linewidth when crossing the FM-AF phase transition temperature reveals the enhanced effective magnetic damping and an increased fourfold anisotropic two-magnon scattering. The first-principles calculations suggest that the in-plane lattice compressive strain imposed by the MgO substrate plays an important role in determining the magnetic structures FeRh films.

AB - We quantitatively investigated the magnetocrystalline anisotropy (MCA) of metamagnetic FeRh films epitaxially grown on MgO(001) substrates. The in-plane fourfold magnetic anisotropy of epitaxial FeRh films is reoriented from the<100>to<110>directions and meanwhile the strength is obvious enhanced when FeRh transfers from the ferromagnetic (FM) to antiferromagnetic (AF) states. In the nominal AF state, the observed fourfold magnetic anisotropy originates from the exchange coupling between the residual FM moments caused by antisite defects and the AF matrix, which therefore indicates the orientation and strength of the MCA of AF FeRh. The steep increase of the FM resonance linewidth when crossing the FM-AF phase transition temperature reveals the enhanced effective magnetic damping and an increased fourfold anisotropic two-magnon scattering. The first-principles calculations suggest that the in-plane lattice compressive strain imposed by the MgO substrate plays an important role in determining the magnetic structures FeRh films.

KW - Epitaxial film

KW - FeRh

KW - Magnetic structure

KW - Magnetocrystalline anisotropy

KW - Phase transition

UR - https://www.scopus.com/pages/publications/85130841112

U2 - 10.1016/j.jallcom.2022.165566

DO - 10.1016/j.jallcom.2022.165566

M3 - 文章

AN - SCOPUS:85130841112

SN - 0925-8388

VL - 917

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 165566

ER -

Magnetocrystalline anisotropy of epitaxially grown FeRh/MgO(001) films

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Keywords

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