# Enhancing atomic ordering, magnetic and transport properties of Mn2VGa Heusler alloy thin films toward negatively spin-polarized charge injection

https://mdr.nims.go.jp/datasets/b7d11426-bb91-499c-830e-1ce1fcd6e5e4

## File

- [R3_Supplimentary information_MDR.pdf](https://mdr.nims.go.jp/filesets/ae864917-d3da-43e9-ae56-7612be0ad057/download) ([Detail](https://mdr.nims.go.jp/filesets/ae864917-d3da-43e9-ae56-7612be0ad057.md))
- [R3_MVG paper_MDR.pdf](https://mdr.nims.go.jp/filesets/d216fabb-d9e1-4b7b-8b07-6b469c3466f6/download) ([Detail](https://mdr.nims.go.jp/filesets/d216fabb-d9e1-4b7b-8b07-6b469c3466f6.md))

## Id

b7d11426-bb91-499c-830e-1ce1fcd6e5e4

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-06-28T01:36:28.788992Z

## Updated at

2025-06-23T23:30:47.019521Z

## Published at

2025-06-23T23:20:46.193545Z

## Doi

https://doi.org/10.48505/nims.4563

## First published url

https://doi.org/10.1016/j.actamat.2024.120110

## Date published

2024-06-13

## Recorded date published

2024-9

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Enhancing atomic ordering, magnetic and transport properties of Mn2VGa Heusler
    alloy thin films toward negatively spin-polarized charge injection
  title_type: original
  lang: en

## Description

- description: Magnetic materials with negative spin polarization have attracted attention
    for their potential to increase the design freedom of spintronic devices. This
    study investigated the effects of off-stoichiometry on the atomic ordering, microstructure,
    and magneto-transport properties in Mn2+xV1-xGa (x = −0.2, 0, +0.2) Heusler alloy
    films, which are predicted to have large negative spin polarization derived from
    a pseudo band gap in the majority spin channel. The Mn2+xV1-xGa films epitaxially
    grown on MgO(001) substrates exhibits a higher degree of B2 and L21 order with
    increasing the Mn concentration. A high-quality L21-ordered film was achieved
    in the Mn-rich composition with B2 and L21 order of 0.97 and 0.86, respectively,
    and a saturation magnetization of 1.4 μB/f.u, which agrees the Slater-Pauling
    rule. Scanning transmission electron microscopy observations showed that B2 and
    L21 phases coexist in Mn-poor and stoichiometric films, while the L21 phase is
    dominant in the Mn-rich film with small amounts of Mn–V and Mn–Ga disorders, as
    revealed by laboratory and anomalous X-ray diffraction. Combined first-principles
    calculations and anisotropic magnetoresistance analysis confirm that the addition
    of excess Mn preserves the high spin polarization by suppressing the formation
    of deleterious anti-sites of V atoms occupying Mn sites. Therefore, the Mn-rich
    composition is promising for negatively spin-polarized charge injection in Mn2VGa-based
    spintronic applications.
  description_type: abstract
  lang: eng

## Creator

- name: Z.H. Li
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Nanostructure
    Analysis Group
  ror: https://ror.org/026v1ze26
- name: H. Suto
  role: author
  orcid: https://orcid.org/0000-0003-4387-5862
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Magnetic Functional
    Device Group
  ror: https://ror.org/026v1ze26
- name: V. Barwal
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Magnetic Functional
    Device Group
  ror: https://ror.org/026v1ze26
- name: K. Masuda
  role: author
  orcid: https://orcid.org/0000-0002-6884-6390
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Spin Theory Group
  ror: https://ror.org/026v1ze26
- name: T.T. Sasaki
  role: author
  orcid: https://orcid.org/0000-0002-5952-7638
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Nanostructure
    Analysis Group
  ror: https://ror.org/026v1ze26
- name: Z.X. Chen
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials
  ror: https://ror.org/026v1ze26
- name: H. Tajiri
  role: author
  organization: Japan Synchrotron Radiation Research Institute (JASRI)
- name: L.S.R. Kumara
  role: author
  organization: Japan Synchrotron Radiation Research Institute (JASRI)
- name: T. Koganezawa
  role: author
  organization: Japan Synchrotron Radiation Research Institute (JASRI)
- name: K. Amemiya
  role: author
  organization: Institute of Meterials Structure Science, KEK
- name: S. Kokado
  role: author
  organization: Shizuoka University
- name: K. Hono
  role: author
  orcid: https://orcid.org/0000-0001-7367-0193
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Y. Sakuraba
  role: author
  orcid: https://orcid.org/0000-0003-4618-9550
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Magnetic Functional
    Device Group
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier

## Managing organization



## Keyword

- subject: Heusler alloy
  schema: not_defined
- subject: Atomic order
  schema: not_defined
- subject: Magnetic properties
  schema: not_defined
- subject: Spintronics
  schema: not_defined
- subject: First-principles calculations
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-06-24
end_date: 2025-06-24

## Journal

- title: ACTA MATERIALIA

## Conference



## Related item



## Funding

- identifier: 21K20434
  funder_name: JSPS
  description: スピントルク発振素子の磁化ダイナミクス解明のための新規計測技術開発
- identifier: 23K03934
  funder_name: JSPS
  description: 負のスピン分極ハーフメタル材料の探索と超高出力スピントルク発振素子への応用
- identifier: 19K05249
  funder_name: JSPS
  description: 超高周波ワイヤレス給電に向けたスピンを介した分子運動－電気伝導変換の理論的研究
- identifier: JPMXP1122715503
  funder_name: MEXT
  description: データ創出・活用型マテリアル研究開発プロジェクト事業
- funder_name: ASRC

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## Fileset

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- id: d216fabb-d9e1-4b7b-8b07-6b469c3466f6
  filename: R3_MVG paper_MDR.pdf
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  size: 18730033
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## Thumbnail

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filename: R3_MVG paper_MDR.pdf