Exchange coupling at the interface of antiferromagnet and rare-earth bilayers

Junyu Huang; Chang Liu; Yifan Cui; Yuxiang Ling; Keming Chen; Kunlong Zhao; Xiangshang Xiao; Bin Yuan; Amitesh Paul

doi:10.1016/j.jmmm.2022.169927

Exchange coupling at the interface of antiferromagnet and rare-earth bilayers

Junyu Huang, Chang Liu, Yifan Cui, Yuxiang Ling, Keming Chen, Kunlong Zhao, Xiangshang Xiao, Bin Yuan, Amitesh Paul^*

^*Corresponding author for this work

Materials Science and Engineering

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

2 Scopus citations

Abstract

Helical or non-collinear structures in rare-earth (RE) when topologically stable, can form the basis of realizing all-spin-based technology. Strong coupling at the ferromagnet (FM)-RE interface, reported earlier, originates from the number of irreversible spins owing to the imbalance in the non-collinear configuration within the RE layer. Here, we explore the exchange coupling between an antiferromagnet (AF) and a rare-earth (RE) i.e. within Mn3Ir//Dy bilayers for two different Dy thicknesses. A frustrated inter-domain magnetic interaction at the exchange-coupled interfaces of AF-RE specimen with the thicker Dy layer leads to a coexistence of spin-freezing like ordering around the temperature range where the helical spin configuration is expected to be established. Due to the small number of irreversible spins within the RE, the corresponding interfacial coupling around the temperature range of the helical phase remains weak leading to minimal exchange bias field irrespective of the Dy thickness.

Original language	English
Journal	Journal of Magnetism and Magnetic Materials
DOIs	https://doi.org/10.1016/j.jmmm.2022.169927
State	E-pub ahead of print - 7 Sep 2022

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10.1016/j.jmmm.2022.169927

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@article{10c696f97d78468689713e3c14abb06f,

title = "Exchange coupling at the interface of antiferromagnet and rare-earth bilayers",

abstract = "Helical or non-collinear structures in rare-earth (RE) when topologically stable, can form the basis of realizing all-spin-based technology. Strong coupling at the ferromagnet (FM)-RE interface, reported earlier, originates from the number of irreversible spins owing to the imbalance in the non-collinear configuration within the RE layer. Here, we explore the exchange coupling between an antiferromagnet (AF) and a rare-earth (RE) i.e. within Mn3Ir//Dy bilayers for two different Dy thicknesses. A frustrated inter-domain magnetic interaction at the exchange-coupled interfaces of AF-RE specimen with the thicker Dy layer leads to a coexistence of spin-freezing like ordering around the temperature range where the helical spin configuration is expected to be established. Due to the small number of irreversible spins within the RE, the corresponding interfacial coupling around the temperature range of the helical phase remains weak leading to minimal exchange bias field irrespective of the Dy thickness.",

author = "Junyu Huang and Chang Liu and Yifan Cui and Yuxiang Ling and Keming Chen and Kunlong Zhao and Xiangshang Xiao and Bin Yuan and Amitesh Paul",

year = "2022",

month = sep,

day = "7",

doi = "10.1016/j.jmmm.2022.169927",

language = "英语",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

}

TY - JOUR

T1 - Exchange coupling at the interface of antiferromagnet and rare-earth bilayers

AU - Huang, Junyu

AU - Liu, Chang

AU - Cui, Yifan

AU - Ling, Yuxiang

AU - Chen, Keming

AU - Zhao, Kunlong

AU - Xiao, Xiangshang

AU - Yuan, Bin

AU - Paul, Amitesh

PY - 2022/9/7

Y1 - 2022/9/7

N2 - Helical or non-collinear structures in rare-earth (RE) when topologically stable, can form the basis of realizing all-spin-based technology. Strong coupling at the ferromagnet (FM)-RE interface, reported earlier, originates from the number of irreversible spins owing to the imbalance in the non-collinear configuration within the RE layer. Here, we explore the exchange coupling between an antiferromagnet (AF) and a rare-earth (RE) i.e. within Mn3Ir//Dy bilayers for two different Dy thicknesses. A frustrated inter-domain magnetic interaction at the exchange-coupled interfaces of AF-RE specimen with the thicker Dy layer leads to a coexistence of spin-freezing like ordering around the temperature range where the helical spin configuration is expected to be established. Due to the small number of irreversible spins within the RE, the corresponding interfacial coupling around the temperature range of the helical phase remains weak leading to minimal exchange bias field irrespective of the Dy thickness.

AB - Helical or non-collinear structures in rare-earth (RE) when topologically stable, can form the basis of realizing all-spin-based technology. Strong coupling at the ferromagnet (FM)-RE interface, reported earlier, originates from the number of irreversible spins owing to the imbalance in the non-collinear configuration within the RE layer. Here, we explore the exchange coupling between an antiferromagnet (AF) and a rare-earth (RE) i.e. within Mn3Ir//Dy bilayers for two different Dy thicknesses. A frustrated inter-domain magnetic interaction at the exchange-coupled interfaces of AF-RE specimen with the thicker Dy layer leads to a coexistence of spin-freezing like ordering around the temperature range where the helical spin configuration is expected to be established. Due to the small number of irreversible spins within the RE, the corresponding interfacial coupling around the temperature range of the helical phase remains weak leading to minimal exchange bias field irrespective of the Dy thickness.

U2 - 10.1016/j.jmmm.2022.169927

DO - 10.1016/j.jmmm.2022.169927

M3 - 文章

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

ER -

Exchange coupling at the interface of antiferromagnet and rare-earth bilayers

Abstract

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