# Excimer-laser-annealing-induced crystallization and atomic ordering of Co2Mn0.5Fe0.5Ge Heusler alloy thin films for spintronic applications

https://mdr.nims.go.jp/datasets/9e53e8f1-49a1-4cd8-ab53-684c46bd0640

## File

- [083903_1_5.0304815.pdf](https://mdr.nims.go.jp/filesets/64aaf72d-fdbe-4abd-a1e5-4bf8dcf4dc35/download) ([Detail](https://mdr.nims.go.jp/filesets/64aaf72d-fdbe-4abd-a1e5-4bf8dcf4dc35.md))

## Id

9e53e8f1-49a1-4cd8-ab53-684c46bd0640

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-04-20T06:32:16.177609Z

## Updated at

2026-04-20T07:22:04.234821Z

## Published at

2026-04-20T09:24:56.034037Z

## Doi



## First published url

https://doi.org/10.1063/5.0304815

## Date published

2026-02-28

## Recorded date published

2026-2-28

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Excimer-laser-annealing-induced crystallization and atomic ordering of Co2Mn0.5Fe0.5Ge
    Heusler alloy thin films for spintronic applications
  title_type: original
  lang: en

## Description

- description: Magnetic Heusler alloys are highly attractive for spintronics; however,
    realizing their full potential requires high-temperature annealing, which is often
    incompatible with practical device fabrication. Excimer laser annealing (ELA)
    potentially addresses this temperature constraint by making use of the short annealing
    time and temperature gradient along the depth direction. We investigated the effect
    of ELA on Co2Mn0.5Fe0.5Ge half-metallic Heusler-alloy thin films and demonstrated
    that ELA successfully induces crystallization and B2 atomic ordering. Optimized
    ELA condition using low fluence with a high number of laser irradiations achieved
    reduced resistivity and negative anisotropic magnetoresistance, indicating improved
    atomic ordering and high spin polarization, while maintaining flatness of the
    films. These findings establish ELA as a viable annealing method for integrating
    high-performance Heusler alloys into the device structure with strict thermal
    budget. Moreover, ELA offers additional advantages such as enhanced throughput
    and selective area annealing, thereby broadening the scope of Heusler-alloy applications
    in spintronic devices.
  description_type: abstract
  lang: und

## Creator

- name: Hirofumi Suto
  role: author
  orcid: https://orcid.org/0000-0003-4387-5862
- name: Keita Katayama
  role: author
  orcid: https://orcid.org/0000-0003-4278-8863
- name: Yohei Tanaka
  role: author
- name: Dolly Taparia
  role: author
- name: Nattamon Suwannaharn
  role: author
  orcid: https://orcid.org/0000-0003-1285-599X
- name: Tomoya Nakatani
  role: author
  orcid: https://orcid.org/0000-0001-9590-216X
- name: Taisuke T. Sasaki
  role: author
  orcid: https://orcid.org/0000-0002-5952-7638
- name: Hisato Yabuta
  role: author
  orcid: https://orcid.org/0000-0001-6008-7054
- 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: Laser annealing
  schema: not_defined
- subject: Heusler alloys
  schema: not_defined
- subject: Half-metals
  schema: not_defined
- subject: Thin films
  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: '139'
  issue: '8'
  article_number: '083903'

## Conference



## Related item



## Funding

- funder_name: Advanced Storage Research Consortium
- identifier: JPMXP1225NM5220
  funder_name: MEXT ARIM
- identifier: JPJ011438
  funder_name: MEXT X-NICS

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## Fileset

- id: 64aaf72d-fdbe-4abd-a1e5-4bf8dcf4dc35
  filename: '083903_1_5.0304815.pdf'
  content_type: application/pdf
  size: 3186731
  md5: a4da3e3a8a6e3196e575dc2ad2003262

## Thumbnail

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filename: '083903_1_5.0304815.pdf'