# Impact of GdOx insertion on magnetic anisotropy and damping in double-barrier magnetic stacks

https://mdr.nims.go.jp/datasets/c7df46ca-0fa7-4d90-b36b-94b238498e84

## File

- [Impact of GdOx insertion on magnetic anisotropy and damping in double-barrier magnetic stacks.pdf](https://mdr.nims.go.jp/filesets/95a71740-0017-44dd-8391-8b026b8c8a5f/download) ([Detail](https://mdr.nims.go.jp/filesets/95a71740-0017-44dd-8391-8b026b8c8a5f.md))

## Id

c7df46ca-0fa7-4d90-b36b-94b238498e84

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-03-04T00:15:19.748324Z

## Updated at

2025-03-04T07:30:37.274142Z

## Published at

2025-03-04T07:30:37.378663Z

## Doi

https://doi.org/10.48505/nims.5355

## First published url

https://doi.org/10.1063/5.0248112

## Date published

2025-03-01

## Recorded date published

2025-3-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Impact of GdOx insertion on magnetic anisotropy and damping in double-barrier
    magnetic stacks
  title_type: original
  lang: en

## Description

- description: For the realization of high-performance spintronic devices, the development
    of novel magnetic materials/structures satisfying both large perpendicular magnetic
    anisotropy (PMA) and ultra-low Gilbert damping is strongly desired. Here, we show
    that the insertion of an ultrathin GdOx layer as a capping in double-barrier ultrathin
    magnetic stacks provides such a solution. The inserted GdOx capping layer prevents
    unintended intermixing among the magnetic layer (CoFeB) and oxide layers (MgO
    and MgFeO), suppressing the deterioration of both the PMA and the Gilbert damping.
    Remarkably, the variation in the effective oxygen doping rate of the GdOx layer
    strongly influences both the PMA and the Gilbert damping, likely affected by a
    change in the polarization of the orbital magnetic moment. As a result, the GdOx
    inserted stacks present considerable effective PMA values (a maximum of ∼0.55
    erg/cm2) while simultaneously maintaining an ultra-low Gilbert damping (a minimum
    of ∼1.68 × 10−3) within the range of 1.0–1.5 nm CoFeB thicknesses. These results
    pave the way to realize practical spintronic devices by providing reliable magnetic
    structures for efficient spin manipulation.
  description_type: abstract
  lang: und

## Creator

- name: Junyeon Kim
  role: author
  orcid: https://orcid.org/0000-0001-5460-1432
- name: Takayuki Nozaki
  role: author
  orcid: https://orcid.org/0000-0002-9678-8319
- name: Jun Uzuhashi
  role: author
  orcid: https://orcid.org/0000-0003-2023-8158
- name: Shingo Tamaru
  role: author
  orcid: https://orcid.org/0000-0001-7105-4805
- name: Tomohiro Ichinose
  role: author
  orcid: https://orcid.org/0000-0002-8158-1606
- name: Takao Ochiai
  role: author
  orcid: https://orcid.org/0009-0006-6626-2195
- name: Tatsuya Yamamoto
  role: author
  orcid: https://orcid.org/0000-0002-1640-1947
- name: Tadakatsu Ohkubo
  role: author
  orcid: https://orcid.org/0000-0003-3548-1951
- name: Kay Yakushiji
  role: author
  orcid: https://orcid.org/0000-0002-1616-1613
- name: Shinji Yuasa
  role: author
  orcid: https://orcid.org/0000-0003-1093-9057

## Contact agent



## Publisher

organization: AIP Publishing

## Managing organization



## Keyword

- subject: transmission electron microscopy
  schema: not_defined

## Rights

- description: "© 2025 Author(s). This article is distributed under a Creative Commons
    Attribution-NonCommercial-NoDerivs 4.0 International (CC BY-NC-ND) License. https://creativecommons.org/licenses/by-nc-nd/4.0/"
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: APL Materials
  issn: 2166532X
  volume: '13'
  issue: '3'

## Conference



## Related item



## Funding

- identifier: JPNP 16007
  funder_name: New Energy and Industrial Technology Development Organization
- identifier: JP23K04574
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



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## Fileset

- id: 95a71740-0017-44dd-8391-8b026b8c8a5f
  filename: Impact of GdOx insertion on magnetic anisotropy and damping in double-barrier
    magnetic stacks.pdf
  content_type: application/pdf
  size: 1793501
  md5: a7cf33916a414ae1abbf8ddaf4bec61c

## Thumbnail

fileset_id: 95a71740-0017-44dd-8391-8b026b8c8a5f
filename: Impact of GdOx insertion on magnetic anisotropy and damping in double-barrier
  magnetic stacks.pdf