# Negative spin polarization of Mn2VGa Heusler alloy thin films studied in current-perpendicular-to-plane giant magnetoresistance devices

https://mdr.nims.go.jp/datasets/efd3ecc1-f33f-489e-930f-16f3e7f3c39b

## File

- [RDE_manusscript_MVG_CPP-GMR_clean.pdf](https://mdr.nims.go.jp/filesets/583ef995-0d29-4529-ab88-ed61e6960878/download) ([Detail](https://mdr.nims.go.jp/filesets/583ef995-0d29-4529-ab88-ed61e6960878.md))

## Id

efd3ecc1-f33f-489e-930f-16f3e7f3c39b

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-18T09:33:50.129923Z

## Updated at

2024-12-20T07:30:48.068627Z

## Published at

2024-12-20T07:30:48.304223Z

## Doi

https://doi.org/10.48505/nims.5188

## First published url

https://doi.org/10.1063/5.0207980

## Date published

2024-05-28

## Recorded date published

2024-5-28

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Negative spin polarization of Mn2VGa Heusler alloy thin films studied in
    current-perpendicular-to-plane giant magnetoresistance devices
  title_type: original
  lang: en

## Description

- description: 'Magnetic materials with high negative spin polarization have been
    sought as a building block to increase the design freedom and performance of spintronics
    devices. In this paper, we investigate negative spin polarization of Mn2VGa Heusler
    alloy in current-perpendicular-to-plane giant magnetoresistance (CPP-GMR) devices.
    We fabricated an epitaxial CPP-GMR stack consisting of Mn2VGa/Ag/CoFe with L21
    ordering in the Mn2VGa layer and observed negative magnetoresistance (MR), which
    provided evidence of negative spin polarization. The MR ratio depended on thermal
    treatments (deposition at an elevated temperature and post-annealing), because
    these processes affected the ordering, roughness, and magnetic properties of Mn2VGa.
    The maximum MR ratio reached −1.8% at room temperature and −3.0% at low temperature,
    representing the highest among the negative MR values in pseudo-spin-valve CPP-GMR
    devices despite the underestimation due to an incomplete antiparallel magnetization
    configuration. These findings demonstrate the potential of Mn2VGa for a material
    with high negative spin polarization. '
  description_type: abstract
  lang: und

## Creator

- name: Hirofumi Suto
  role: author
  orcid: https://orcid.org/0000-0003-4387-5862
- name: Vineet Barwal
  role: author
  orcid: https://orcid.org/0000-0001-9445-5900
- name: Kodchakorn Simalaotao
  role: author
  orcid: https://orcid.org/0000-0002-6098-4422
- name: Zehao Li
  role: author
  orcid: https://orcid.org/0000-0002-3867-1462
- name: Keisuke Masuda
  role: author
  orcid: https://orcid.org/0000-0002-6884-6390
- name: Taisuke Sasaki
  role: author
  orcid: https://orcid.org/0000-0002-5952-7638
- name: Yoshio Miura
  role: author
  orcid: https://orcid.org/0000-0002-5605-5452
- name: Yuya Sakuraba
  role: author
  orcid: https://orcid.org/0000-0003-4618-9550

## Contact agent



## Publisher

organization: AIP Publishing

## Managing organization



## Keyword

- subject: Spintronics
  schema: not_defined
- subject: Heusler alloys
  schema: not_defined
- subject: Magnetoresistance
  schema: not_defined
- subject: Magnetic recording
  schema: not_defined
- subject: Magnetic material
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Journal of Applied Physics
  issn: '00218979'
  volume: '135'
  issue: '20'

## Conference



## Related item



## Funding

- funder_name: Advanced Storage Research Consortium
- identifier: 21K20434
  funder_name: Japan Society for the Promotion of Science
- identifier: 23K03934
  funder_name: Japan Society for the Promotion of Science
- identifier: JPJ011438
  funder_name: MEXT X-nics

## Instrument



## Instrument operator



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Computational method



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## Fileset

- id: 583ef995-0d29-4529-ab88-ed61e6960878
  filename: RDE_manusscript_MVG_CPP-GMR_clean.pdf
  content_type: application/pdf
  size: 1692533
  md5: c9800f5da9c62e98a88dcd0c81e3b2f0

## Thumbnail

fileset_id: 583ef995-0d29-4529-ab88-ed61e6960878
filename: RDE_manusscript_MVG_CPP-GMR_clean.pdf