Electric control of magnetic properties in epitaxially grown FeRh/MgO/PMN-PT heterostructures

Zhenchong Li; Jiapeng Zhao; Qiuxiang Zhu; Xiaowei Lv; Cuimei Cao; Xiaoyan Zhu; Lin Sun; Yong Peng; Wenjuan Cheng; Dongmei Jiang; Qingfeng Zhan

doi:10.1016/j.jallcom.2021.159220

Electric control of magnetic properties in epitaxially grown FeRh/MgO/PMN-PT heterostructures

Zhenchong Li, Jiapeng Zhao, Qiuxiang Zhu, Xiaowei Lv, Cuimei Cao, Xiaoyan Zhu, Lin Sun, Yong Peng, Wenjuan Cheng, Dongmei Jiang, Qingfeng Zhan

School of Physics and Electronic Science

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

8 Scopus citations

Abstract

We epitaxially grew the metamagnetic FeRh films on ferroelectric PMN-PT(001) substrates and investigated the electric control of magnetic properties. An MgO buffer layer is inserted to reduce the considerably large lattice mismatch of 5.44% between FeRh and PMN-PT, leading to a nice epitaxial growth with a relationship of FeRh[110](001)||MgO[100](001)||PMN-PT[100](001). The as-grown FeRh film shows a typical antiferromagnetic-to-ferromagnetic phase transition by means of varying the temperature. Because a growth-induced uniaxial magnetic anisotropy is superimposed on the in-plane four-fold magnetocrystalline anisotropy, the epitaxial FeRh film displays different kinds of multi-step hysteresis loops at various field orientations. An electric field applied on the PMN-PT substrate can remarkably increase the coercivity of FeRh film, which presents a butterﬂy type shape, indicating a strain-mediated magnetoelectric coupling. Because of the inhibitory effect of the remnant compressive strain on the phase transition, the critical transition temperature and the magnetization are obviously enhanced and reduced, respectively, after removing the electric effect.

Original language	English
Article number	159220
Journal	Journal of Alloys and Compounds
Volume	868
DOIs	https://doi.org/10.1016/j.jallcom.2021.159220
State	Published - 5 Jul 2021

Keywords

Epitaxial growth
FeRh/PMN-PT
Ferromagnetic/ferroelectric heterostructure
Magnetic phase transition

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10.1016/j.jallcom.2021.159220

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@article{cdf5152372e24e75842591b9b1401b5f,

title = "Electric control of magnetic properties in epitaxially grown FeRh/MgO/PMN-PT heterostructures",

abstract = "We epitaxially grew the metamagnetic FeRh films on ferroelectric PMN-PT(001) substrates and investigated the electric control of magnetic properties. An MgO buffer layer is inserted to reduce the considerably large lattice mismatch of 5.44\% between FeRh and PMN-PT, leading to a nice epitaxial growth with a relationship of FeRh[110](001)||MgO[100](001)||PMN-PT[100](001). The as-grown FeRh film shows a typical antiferromagnetic-to-ferromagnetic phase transition by means of varying the temperature. Because a growth-induced uniaxial magnetic anisotropy is superimposed on the in-plane four-fold magnetocrystalline anisotropy, the epitaxial FeRh film displays different kinds of multi-step hysteresis loops at various field orientations. An electric field applied on the PMN-PT substrate can remarkably increase the coercivity of FeRh film, which presents a butterﬂy type shape, indicating a strain-mediated magnetoelectric coupling. Because of the inhibitory effect of the remnant compressive strain on the phase transition, the critical transition temperature and the magnetization are obviously enhanced and reduced, respectively, after removing the electric effect.",

keywords = "Epitaxial growth, FeRh/PMN-PT, Ferromagnetic/ferroelectric heterostructure, Magnetic phase transition",

author = "Zhenchong Li and Jiapeng Zhao and Qiuxiang Zhu and Xiaowei Lv and Cuimei Cao and Xiaoyan Zhu and Lin Sun and Yong Peng and Wenjuan Cheng and Dongmei Jiang and Qingfeng Zhan",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = jul,

day = "5",

doi = "10.1016/j.jallcom.2021.159220",

language = "英语",

volume = "868",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Electric control of magnetic properties in epitaxially grown FeRh/MgO/PMN-PT heterostructures

AU - Li, Zhenchong

AU - Zhao, Jiapeng

AU - Zhu, Qiuxiang

AU - Lv, Xiaowei

AU - Cao, Cuimei

AU - Zhu, Xiaoyan

AU - Sun, Lin

AU - Peng, Yong

AU - Cheng, Wenjuan

AU - Jiang, Dongmei

AU - Zhan, Qingfeng

PY - 2021/7/5

Y1 - 2021/7/5

N2 - We epitaxially grew the metamagnetic FeRh films on ferroelectric PMN-PT(001) substrates and investigated the electric control of magnetic properties. An MgO buffer layer is inserted to reduce the considerably large lattice mismatch of 5.44% between FeRh and PMN-PT, leading to a nice epitaxial growth with a relationship of FeRh[110](001)||MgO[100](001)||PMN-PT[100](001). The as-grown FeRh film shows a typical antiferromagnetic-to-ferromagnetic phase transition by means of varying the temperature. Because a growth-induced uniaxial magnetic anisotropy is superimposed on the in-plane four-fold magnetocrystalline anisotropy, the epitaxial FeRh film displays different kinds of multi-step hysteresis loops at various field orientations. An electric field applied on the PMN-PT substrate can remarkably increase the coercivity of FeRh film, which presents a butterﬂy type shape, indicating a strain-mediated magnetoelectric coupling. Because of the inhibitory effect of the remnant compressive strain on the phase transition, the critical transition temperature and the magnetization are obviously enhanced and reduced, respectively, after removing the electric effect.

AB - We epitaxially grew the metamagnetic FeRh films on ferroelectric PMN-PT(001) substrates and investigated the electric control of magnetic properties. An MgO buffer layer is inserted to reduce the considerably large lattice mismatch of 5.44% between FeRh and PMN-PT, leading to a nice epitaxial growth with a relationship of FeRh[110](001)||MgO[100](001)||PMN-PT[100](001). The as-grown FeRh film shows a typical antiferromagnetic-to-ferromagnetic phase transition by means of varying the temperature. Because a growth-induced uniaxial magnetic anisotropy is superimposed on the in-plane four-fold magnetocrystalline anisotropy, the epitaxial FeRh film displays different kinds of multi-step hysteresis loops at various field orientations. An electric field applied on the PMN-PT substrate can remarkably increase the coercivity of FeRh film, which presents a butterﬂy type shape, indicating a strain-mediated magnetoelectric coupling. Because of the inhibitory effect of the remnant compressive strain on the phase transition, the critical transition temperature and the magnetization are obviously enhanced and reduced, respectively, after removing the electric effect.

KW - Epitaxial growth

KW - FeRh/PMN-PT

KW - Ferromagnetic/ferroelectric heterostructure

KW - Magnetic phase transition

UR - https://www.scopus.com/pages/publications/85101325013

U2 - 10.1016/j.jallcom.2021.159220

DO - 10.1016/j.jallcom.2021.159220

M3 - 文章

AN - SCOPUS:85101325013

SN - 0925-8388

VL - 868

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 159220

ER -

Electric control of magnetic properties in epitaxially grown FeRh/MgO/PMN-PT heterostructures

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