Enhanced magnetic properties and magnetic field induced strain in polycrystalline NiMnGa alloy by electron irradiation

Rui Ning; Yundong Zhao; Sibo Sun; Zhiyong Gao; Xingzhong Cao; Wei Cai

doi:10.1016/j.jmmm.2022.170010

Enhanced magnetic properties and magnetic field induced strain in polycrystalline NiMnGa alloy by electron irradiation

Rui Ning
, Yundong Zhao
, Sibo Sun
, Zhiyong Gao^*
, Xingzhong Cao
, Wei Cai

^*Corresponding author for this work

School of Materials Science and Engineering

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

2 Scopus citations

Abstract

High saturation magnetization (M_s) and magnetocrystalline anisotropy constant (K_u) are essential to achieve high magnetic field induced strain (MFIS) in NiMnGa alloys. These magnetic properties are closely related to the local electronic structure and intrinsic magnetic moment. In the present study, point defects were induced by electron irradiation to modify lattice distortion leading to the variation of Mn-Mn atoms. The M_s and K_u were enhanced providing higher driving force for variant movement. Then the MFIS of polycrystalline NiMnGa alloys can be increased from 200 ppm to 700 ppm. This research provides a new idea to enhance magnetic properties and magnetic field induced strain.

Original language	English
Article number	170010
Journal	Journal of Magnetism and Magnetic Materials
Volume	563
DOIs	https://doi.org/10.1016/j.jmmm.2022.170010
State	Published - 1 Dec 2022

Keywords

Electron irradiation
Magnetic field induced strain
Magnetic properties
NiMnGa alloy

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10.1016/j.jmmm.2022.170010

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title = "Enhanced magnetic properties and magnetic field induced strain in polycrystalline NiMnGa alloy by electron irradiation",

abstract = "High saturation magnetization (Ms) and magnetocrystalline anisotropy constant (Ku) are essential to achieve high magnetic field induced strain (MFIS) in NiMnGa alloys. These magnetic properties are closely related to the local electronic structure and intrinsic magnetic moment. In the present study, point defects were induced by electron irradiation to modify lattice distortion leading to the variation of Mn-Mn atoms. The Ms and Ku were enhanced providing higher driving force for variant movement. Then the MFIS of polycrystalline NiMnGa alloys can be increased from 200 ppm to 700 ppm. This research provides a new idea to enhance magnetic properties and magnetic field induced strain.",

keywords = "Electron irradiation, Magnetic field induced strain, Magnetic properties, NiMnGa alloy",

author = "Rui Ning and Yundong Zhao and Sibo Sun and Zhiyong Gao and Xingzhong Cao and Wei Cai",

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

year = "2022",

month = dec,

day = "1",

doi = "10.1016/j.jmmm.2022.170010",

language = "英语",

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journal = "Journal of Magnetism and Magnetic Materials",

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TY - JOUR

T1 - Enhanced magnetic properties and magnetic field induced strain in polycrystalline NiMnGa alloy by electron irradiation

AU - Ning, Rui

AU - Zhao, Yundong

AU - Sun, Sibo

AU - Gao, Zhiyong

AU - Cao, Xingzhong

AU - Cai, Wei

PY - 2022/12/1

Y1 - 2022/12/1

N2 - High saturation magnetization (Ms) and magnetocrystalline anisotropy constant (Ku) are essential to achieve high magnetic field induced strain (MFIS) in NiMnGa alloys. These magnetic properties are closely related to the local electronic structure and intrinsic magnetic moment. In the present study, point defects were induced by electron irradiation to modify lattice distortion leading to the variation of Mn-Mn atoms. The Ms and Ku were enhanced providing higher driving force for variant movement. Then the MFIS of polycrystalline NiMnGa alloys can be increased from 200 ppm to 700 ppm. This research provides a new idea to enhance magnetic properties and magnetic field induced strain.

AB - High saturation magnetization (Ms) and magnetocrystalline anisotropy constant (Ku) are essential to achieve high magnetic field induced strain (MFIS) in NiMnGa alloys. These magnetic properties are closely related to the local electronic structure and intrinsic magnetic moment. In the present study, point defects were induced by electron irradiation to modify lattice distortion leading to the variation of Mn-Mn atoms. The Ms and Ku were enhanced providing higher driving force for variant movement. Then the MFIS of polycrystalline NiMnGa alloys can be increased from 200 ppm to 700 ppm. This research provides a new idea to enhance magnetic properties and magnetic field induced strain.

KW - Electron irradiation

KW - Magnetic field induced strain

KW - Magnetic properties

KW - NiMnGa alloy

UR - https://www.scopus.com/pages/publications/85139035423

U2 - 10.1016/j.jmmm.2022.170010

DO - 10.1016/j.jmmm.2022.170010

M3 - 文章

AN - SCOPUS:85139035423

SN - 0304-8853

VL - 563

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

M1 - 170010

ER -

Enhanced magnetic properties and magnetic field induced strain in polycrystalline NiMnGa alloy by electron irradiation

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