# Evaluation of spin mixing conductance in                    <math>                      <mrow>                        <msub>                          <mi>Co</mi>                          <mn>2</mn>                        </msub>                        <mi>Fe</mi>                        <msub>                          <mi>Ga</mi>                          <mrow>                            <mn>0.5</mn>                          </mrow>                        </msub>                        <msub>                          <mi>Ge</mi>                          <mrow>                            <mn>0.5</mn>                          </mrow>                        </msub>                        <mo>/</mo>                        <mi>Pt</mi>                      </mrow>                    </math>                    bilayer and the effect of ultrathin Cu, Ni, Ru, Ta, or Cr insertion layers

https://mdr.nims.go.jp/datasets/e9e61312-f145-46d4-816b-f1de9aed09b4

## File

- [20260713_MDR_Evaluation of spin mixing conductance in Co2FeGa0.5Ge0.5_Pt bilayer and the effect of ultrathin Cu Ni Ru Ta or Cr insertion layers.pdf](https://mdr.nims.go.jp/filesets/70f4f524-7ef4-4f07-b5c3-2651c67b5a6d/download) ([Detail](https://mdr.nims.go.jp/filesets/70f4f524-7ef4-4f07-b5c3-2651c67b5a6d.md))

## Id

e9e61312-f145-46d4-816b-f1de9aed09b4

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-04-30T02:55:26.976194Z

## Updated at

2026-07-14T06:37:51.214777Z

## Published at

2026-07-14T09:35:55.906291Z

## Doi

https://doi.org/10.48505/nims.6408

## First published url

https://doi.org/10.1103/b5xh-ypg7

## Date published

2026-05-20

## Recorded date published

2026-5

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Evaluation of spin mixing conductance in                    <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">                      <mml:mrow>                        <mml:msub>                          <mml:mi
    mathvariant="normal">Co</mml:mi>                          <mml:mn>2</mml:mn>                        </mml:msub>                        <mml:mi>Fe</mml:mi>                        <mml:msub>                          <mml:mi
    mathvariant="normal">Ga</mml:mi>                          <mml:mrow>                            <mml:mn>0.5</mml:mn>                          </mml:mrow>                        </mml:msub>                        <mml:msub>                          <mml:mi
    mathvariant="normal">Ge</mml:mi>                          <mml:mrow>                            <mml:mn>0.5</mml:mn>                          </mml:mrow>                        </mml:msub>                        <mml:mo>/</mml:mo>                        <mml:mi>Pt</mml:mi>                      </mml:mrow>                    </mml:math>                    bilayer
    and the effect of ultrathin Cu, Ni, Ru, Ta, or Cr insertion layers
  title_type: original
  lang: en

## Description

- description: Improving the spin mixing conductance at the ferromagnet/heavy metal
    (FM/HM) interface with a low Gilbert damping constant in the FM layer is a key
    requirement for developing efficient spintronic devices. To evaluate the potential
    of Co2FeGa0.5Ge0.5 as the FM layers in such structures, epitaxial Co2FeGa0.5Ge0.5
    single-layer and Co2FeGa0.5Ge0.5/Pt bilayer films were deposited on MgO substrate
    using magnetron sputtering, and their Gilbert damping constants were evaluated
    from ferromagnetic resonance spectra. While the single-layer samples exhibit a
    low damping constant of ~ 1.07×10-3, an enhancement in the damping constant was
    observed in the bilayer samples due to spin pumping across the Co2FeGa0.5Ge0.5/Pt
    interface, from which relatively large spin mixing conductance (g_(eff_Pt)^(↑↓))
    of (2.78±0.09)×1019 m-2 was evaluated. Further, to investigate the effect of interface
    property on g_(eff_Pt)^(↑↓), ultrathin (~ 0.2 nm) Cu, Ni, Ru, Ta, or Cr insertion
    layers were introduced between the Co2FeGa0.5Ge0.5 and Pt. The observed change
    in g_(eff_Pt)^(↑↓) depends on the insertion material, indicating that their physical
    properties, such as magnetic, non-magnetic, antiferromagnetic, light or heavy
    metal, reflect on g_(eff_Pt)^(↑↓)
  description_type: abstract
  lang: eng

## Creator

- name: Madhav M. Bhat
  role: author
- name: H. Suto
  role: author
  orcid: https://orcid.org/0000-0003-4387-5862
  organization: National Institute for Materials Science
- name: T. T. Sasaki
  role: author
  orcid: https://orcid.org/0000-0002-5952-7638
  organization: National Institute for Materials Science
- name: A. Perumal
  role: author
- name: A. Srinivasan
  role: author
- name: Y. Sakuraba
  role: author
  orcid: https://orcid.org/0000-0003-4618-9550
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: American Physical Society (APS)

## Managing organization



## Keyword

- subject: Spin pumping
  schema: not_defined
- subject: Magnetization dynamics
  schema: not_defined
- subject: Spin current
  schema: not_defined
- subject: Ferromagnetic resonance
  schema: not_defined
- subject: Half-metals
  schema: not_defined
- subject: Heusler alloy
  schema: not_defined
- subject: Magnetic thin films
  schema: not_defined

## Rights

- description: "©2026 American Physical Society"
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review Materials
  issn: '24759953'
  volume: '10'
  issue: '5'
  start_page: 54414
  end_page: 54414

## Conference



## Related item

- title: Evaluation of spin mixing conductance in Co2FeGa0.5Ge0.5/Pt bilayer and the
    effect of ultrathin Cu, Ni, Ru, Ta, or Cr insertion layers
  identifier: https://doi.org/10.48505/nims.6269
  identifier_type: DOI
  relation_type: is_supplemented_by
  related_item_type: dataset

## Funding

- funder_name: Advanced Storage Research Consortium
- identifier: JPMJCR21O1
  funder_name: Core Research for Evolutional Science and Technology
- identifier: JPJ011438
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMJER2201
  funder_name: Exploratory Research for Advanced Technology

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Custom property



## Fileset

- id: 70f4f524-7ef4-4f07-b5c3-2651c67b5a6d
  filename: 20260713_MDR_Evaluation of spin mixing conductance in Co2FeGa0.5Ge0.5_Pt
    bilayer and the effect of ultrathin Cu Ni Ru Ta or Cr insertion layers.pdf
  content_type: application/pdf
  size: 1427995
  md5: 55f04468c80f771600ec84275734620d

## Thumbnail

fileset_id: 70f4f524-7ef4-4f07-b5c3-2651c67b5a6d
filename: 20260713_MDR_Evaluation of spin mixing conductance in Co2FeGa0.5Ge0.5_Pt
  bilayer and the effect of ultrathin Cu Ni Ru Ta or Cr insertion layers.pdf