# Evaluation of spin mixing conductance in Co2FeGa0.5Ge0.5/Pt bilayer and the effect of ultrathin Cu, Ni, Ru, Ta, or Cr insertion layers

https://mdr.nims.go.jp/datasets/32472662-b20c-4bd9-9dff-84ff54c55bb3

## File

- [Figure 2(a).csv](https://mdr.nims.go.jp/filesets/26155be3-57e7-4651-af99-0d651c64df82/download) ([Detail](https://mdr.nims.go.jp/filesets/26155be3-57e7-4651-af99-0d651c64df82.md))
- [Figure 2(b).csv](https://mdr.nims.go.jp/filesets/c9e35042-fa86-42f2-8927-1439f17010b1/download) ([Detail](https://mdr.nims.go.jp/filesets/c9e35042-fa86-42f2-8927-1439f17010b1.md))
- [Figure 2(c).csv](https://mdr.nims.go.jp/filesets/9e447925-bfb7-4b44-9604-394b592c42dc/download) ([Detail](https://mdr.nims.go.jp/filesets/9e447925-bfb7-4b44-9604-394b592c42dc.md))
- [Figure 2(d).csv](https://mdr.nims.go.jp/filesets/73e23ce2-b7cf-4255-92f1-62144650d85f/download) ([Detail](https://mdr.nims.go.jp/filesets/73e23ce2-b7cf-4255-92f1-62144650d85f.md))
- [Figure 3(a).csv](https://mdr.nims.go.jp/filesets/8cefe2b5-7913-47a1-bcb6-c43da89f32a7/download) ([Detail](https://mdr.nims.go.jp/filesets/8cefe2b5-7913-47a1-bcb6-c43da89f32a7.md))
- [Figure 3(b).csv](https://mdr.nims.go.jp/filesets/2523136e-f465-4fb8-9ff5-aca4d5a02184/download) ([Detail](https://mdr.nims.go.jp/filesets/2523136e-f465-4fb8-9ff5-aca4d5a02184.md))
- [Figure 3(c).csv](https://mdr.nims.go.jp/filesets/9d8df87a-0837-4fc7-b401-f8a7eed3ccda/download) ([Detail](https://mdr.nims.go.jp/filesets/9d8df87a-0837-4fc7-b401-f8a7eed3ccda.md))
- [Figure 4(a).csv](https://mdr.nims.go.jp/filesets/431a034e-dd7d-497f-aced-ab4b148ab15d/download) ([Detail](https://mdr.nims.go.jp/filesets/431a034e-dd7d-497f-aced-ab4b148ab15d.md))
- [Figure 4(b).csv](https://mdr.nims.go.jp/filesets/1a1aa8b9-40c4-4391-a504-642271eb5635/download) ([Detail](https://mdr.nims.go.jp/filesets/1a1aa8b9-40c4-4391-a504-642271eb5635.md))
- [Figure 5.csv](https://mdr.nims.go.jp/filesets/e020c982-710d-4781-bd46-090ca27007f7/download) ([Detail](https://mdr.nims.go.jp/filesets/e020c982-710d-4781-bd46-090ca27007f7.md))
- [Figure 6(a).csv](https://mdr.nims.go.jp/filesets/73fe569e-63bf-4882-bd6a-be1215afe9a9/download) ([Detail](https://mdr.nims.go.jp/filesets/73fe569e-63bf-4882-bd6a-be1215afe9a9.md))
- [Figure 6(b).csv](https://mdr.nims.go.jp/filesets/ec2f37b2-c8cf-477c-85fb-cfa2fb34bbf7/download) ([Detail](https://mdr.nims.go.jp/filesets/ec2f37b2-c8cf-477c-85fb-cfa2fb34bbf7.md))
- [Figure 6(c).csv](https://mdr.nims.go.jp/filesets/baed8708-d048-4cf6-9ef2-faaee514a6d1/download) ([Detail](https://mdr.nims.go.jp/filesets/baed8708-d048-4cf6-9ef2-faaee514a6d1.md))
- [Figure 7(a).csv](https://mdr.nims.go.jp/filesets/59003eae-ee4c-4c28-ae1a-a1354eb1012a/download) ([Detail](https://mdr.nims.go.jp/filesets/59003eae-ee4c-4c28-ae1a-a1354eb1012a.md))
- [Figure 7(b).csv](https://mdr.nims.go.jp/filesets/6502b30e-9429-48c4-abe2-60b2719fe0ea/download) ([Detail](https://mdr.nims.go.jp/filesets/6502b30e-9429-48c4-abe2-60b2719fe0ea.md))
- [Figure 8(b).csv](https://mdr.nims.go.jp/filesets/c41aa1ed-7365-467d-9e52-ac6cc75cb3a6/download) ([Detail](https://mdr.nims.go.jp/filesets/c41aa1ed-7365-467d-9e52-ac6cc75cb3a6.md))
- [Figure 10(a).csv](https://mdr.nims.go.jp/filesets/71c8f41f-2008-46cd-be60-0efcb3d51efa/download) ([Detail](https://mdr.nims.go.jp/filesets/71c8f41f-2008-46cd-be60-0efcb3d51efa.md))
- [Figure 10(b).csv](https://mdr.nims.go.jp/filesets/d6c26c1d-7a97-40d4-bc8d-16cbedcfd903/download) ([Detail](https://mdr.nims.go.jp/filesets/d6c26c1d-7a97-40d4-bc8d-16cbedcfd903.md))
- [Figure 10(c).csv](https://mdr.nims.go.jp/filesets/e134820c-9600-4a3f-a442-1ab483d36c1e/download) ([Detail](https://mdr.nims.go.jp/filesets/e134820c-9600-4a3f-a442-1ab483d36c1e.md))
- [Figure 10(d).csv](https://mdr.nims.go.jp/filesets/4aa9d9db-48f4-4f58-91bf-3d9fc497d621/download) ([Detail](https://mdr.nims.go.jp/filesets/4aa9d9db-48f4-4f58-91bf-3d9fc497d621.md))

## Id

32472662-b20c-4bd9-9dff-84ff54c55bb3

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-04-30T03:01:11.245040Z

## Updated at

2026-04-30T05:44:02.171152Z

## Published at

2026-04-30T09:22:28.059498Z

## Doi

https://doi.org/10.48505/nims.6269

## First published url



## Date published



## Recorded date published



## Resource type

dataset

## Manuscript type

na

## Collection



## Title

- 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
  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 substrates
    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^(↑↓)) of
    (2.78±0.09)×1019 m-2 was evaluated. Further, to investigate the effect of interface
    property on g_eff^(↑↓), ultrathin (~ 0.2 nm) Cu, Ni, Ru, Ta, or Cr insertion layers
    were introduced between the Co2FeGa0.5Ge0.5 and Pt. Inserting a non-magnetic (NM)
    Cu layer results in a pronounced decrease of g_eff^(↑↓) g_eff^⇵, whereas the FM
    Ni layer leavesg_eff^(↑↓) g_eff^⇵ nearly unchanged. In the case of Ru and Ta insertion
    layers, a modest reduction in g_eff^(↑↓) g_eff^⇵ is observed despite their NM
    nature. The antiferromagnetic Cr insertion layer also causes a small decrease
    in g_eff^(↑↓) g_eff^⇵. The observed change in g_eff^(↑↓) depends on the insertion
    material, indicating that their physical properties, such as magnetic, non-magnetic,
    antiferromagnetic, light or heavy metal, reflect on g_eff^(↑↓).
  description_type: abstract
  lang: eng

## Creator

- name: Madhav Mohan Bhat
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials
- name: Hirofumi 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
- name: Taisuke T. Sasaki
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials
- name: Alagarsamy Perumal
  role: author
  organization: Indian Institute of Technology (IIT) Guwahati
- name: Ananthakrishnan Srinivasan
  role: author
  organization: Indian Institute of Technology (IIT) Guwahati
- name: Yuya 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

## Contact agent



## Publisher

organization: American Physical Society

## 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

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Physical Review Materials

## Conference



## Related item



## Funding

- identifier: JPMJER2201
  funder_name: JST ERATO
- funder_name: Advanced Storage Research Consortium
- identifier: JPMJCR21O1
  funder_name: 'JST CREST '
- identifier: JPJ011438
  funder_name: MEXT X-NICS

## 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



## Software



## Custom property



## Fileset

- id: 26155be3-57e7-4651-af99-0d651c64df82
  filename: Figure 2(a).csv
  content_type: text/csv
  size: 130512
  md5: 8e2ef4cd7da7beb9bd5d613d466e280d
- id: c9e35042-fa86-42f2-8927-1439f17010b1
  filename: Figure 2(b).csv
  content_type: text/csv
  size: 127751
  md5: c30280f4a20458e9b9f1deea80f79e4d
- id: 9e447925-bfb7-4b44-9604-394b592c42dc
  filename: Figure 2(c).csv
  content_type: text/csv
  size: 127588
  md5: 1ab6c5a007891c643a9d03366acb5729
- id: 73e23ce2-b7cf-4255-92f1-62144650d85f
  filename: Figure 2(d).csv
  content_type: text/csv
  size: 133389
  md5: f96cb3fb6075b41fbd91e7aa38786cd1
- id: 8cefe2b5-7913-47a1-bcb6-c43da89f32a7
  filename: Figure 3(a).csv
  content_type: text/csv
  size: 25727
  md5: e76797537da1f1297ad47a015fd8d730
- id: 2523136e-f465-4fb8-9ff5-aca4d5a02184
  filename: Figure 3(b).csv
  content_type: text/csv
  size: 22013
  md5: 6bc4f18b8086aba4728aedd5d343f821
- id: 9d8df87a-0837-4fc7-b401-f8a7eed3ccda
  filename: Figure 3(c).csv
  content_type: text/csv
  size: 20936
  md5: c0ce755bea75db6d5d89dc8b59149b1f
- id: 431a034e-dd7d-497f-aced-ab4b148ab15d
  filename: Figure 4(a).csv
  content_type: text/csv
  size: 499
  md5: '0681337efe95fcdd4ee77680c1a141cc'
- id: 1a1aa8b9-40c4-4391-a504-642271eb5635
  filename: Figure 4(b).csv
  content_type: text/csv
  size: 21792
  md5: 18c47bb90aeea5797eda995dbd361743
- id: e020c982-710d-4781-bd46-090ca27007f7
  filename: Figure 5.csv
  content_type: text/csv
  size: 24118
  md5: 474ee23449e2f0a650dd3e0253317486
- id: 73fe569e-63bf-4882-bd6a-be1215afe9a9
  filename: Figure 6(a).csv
  content_type: text/csv
  size: 557482
  md5: 40d90af94b211608cb2ff5ab3b390358
- id: ec2f37b2-c8cf-477c-85fb-cfa2fb34bbf7
  filename: Figure 6(b).csv
  content_type: text/csv
  size: 563809
  md5: 2103444affd0e79be751c0875484d792
- id: baed8708-d048-4cf6-9ef2-faaee514a6d1
  filename: Figure 6(c).csv
  content_type: text/csv
  size: 177094
  md5: e89f0b07bca97158c55d53a362fedc62
- id: 59003eae-ee4c-4c28-ae1a-a1354eb1012a
  filename: Figure 7(a).csv
  content_type: text/csv
  size: 16224
  md5: c0e582360b6c10fab32b878e61f20435
- id: 6502b30e-9429-48c4-abe2-60b2719fe0ea
  filename: Figure 7(b).csv
  content_type: text/csv
  size: 33142
  md5: fec1424b29485f19948044bddc22e35d
- id: c41aa1ed-7365-467d-9e52-ac6cc75cb3a6
  filename: Figure 8(b).csv
  content_type: text/csv
  size: 71635
  md5: 342f8d6ffb84ae65780c97e7335c4d0e
- id: 71c8f41f-2008-46cd-be60-0efcb3d51efa
  filename: Figure 10(a).csv
  content_type: text/csv
  size: 358
  md5: f20960b4bfdb2d0f5c13feb3f777087b
- id: d6c26c1d-7a97-40d4-bc8d-16cbedcfd903
  filename: Figure 10(b).csv
  content_type: text/csv
  size: 371
  md5: eb084f79ecc6a751ed159925c3350355
- id: e134820c-9600-4a3f-a442-1ab483d36c1e
  filename: Figure 10(c).csv
  content_type: text/csv
  size: 322
  md5: c78f7071eff7845aeec22955fb168c12
- id: 4aa9d9db-48f4-4f58-91bf-3d9fc497d621
  filename: Figure 10(d).csv
  content_type: text/csv
  size: 327
  md5: ba27d0701f479a4a058a73b11cd86617

## Thumbnail