# Incommensurate superlattice modulation surviving down to an atomic scale in sputter-deposited Co/Pt(111) epitaxial multilayered films

https://mdr.nims.go.jp/datasets/c583b4a2-796e-4506-9004-27dd26f46996

## Files

- [136-APL Mater. 12, 101120 (2024), Song.pdf](https://mdr.nims.go.jp/filesets/18ccdbbc-9a1f-4a4b-8063-b9d5bec6ff64/download) ([Detail](https://mdr.nims.go.jp/filesets/18ccdbbc-9a1f-4a4b-8063-b9d5bec6ff64.md))

## Id

c583b4a2-796e-4506-9004-27dd26f46996

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-21T05:41:45.405097Z

## Updated at

2024-11-23T07:30:20.786456Z

## Published at

2024-11-23T07:30:21.051953Z

## Doi



## First published url

https://doi.org/10.1063/5.0233911

## Date published

2024-10-01

## Recorded date published

2024-10-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Incommensurate superlattice modulation surviving down to an atomic scale
    in sputter-deposited Co/Pt(111) epitaxial multilayered films
  title_type: original
  lang: en

## Description

- description: We report the structural feature of sputter-deposited epitaxial [Co
    (0.2 nm)/Pt (0.2–1.0 nm)] multilayered films prepared with various periodic structural
    designs consisting of non-integer numbers of Co and Pt monoatomic layers on an
    atomically flat Ru(0001). Sharp superlattice modulation peaks and their systematic
    changes with the Pt thicknesses were observed in the x-ray diffraction (XRD) spectrum.
    The formation of periodic structures shows that layer-by-layer like growth occurs
    and the resulting incommensurate superlattice modulation survives down to an atomic
    scale even in the sputter-deposited Co/Pt multilayers. Magnetic properties were
    also investigated for the Co/Pt multilayers. Interestingly, the maximum perpendicular
    magnetic anisotropy Ku of 3 × 106 erg/cm3 was obtained for the [Co (0.2 nm)/Pt
    (0.3 nm)] multilayer exhibiting incommensurate superlattice modulation peaks,
    while the [Co (0.2 nm)/Pt (0.2 nm)] multilayer with a L11-like XRD peak showed
    a smaller Ku. A cross-sectional high-angle annular dark-field scanning transmission
    electron microscopy analysis revealed that a partially L11-ordered CoPt structure
    is formed in the [Co 0.2 nm/Pt 0.2 nm] multilayer, interpreting the observed Ku.
    This study gives a new insight into the structural feature of sputter-deposited
    Co/Pt multilayers useful for a wide range of spintronic devices, such as magnetic
    tunnel junctions.
  description_type: abstract
  lang: und

## Creator

- name: Jieyuan Song
  role: author
  orcid: https://orcid.org/0000-0001-6846-2875
- name: Thomas Scheike
  role: author
  orcid: https://orcid.org/0000-0002-9163-5524
- name: Cong He
  role: author
  orcid: https://orcid.org/0000-0002-7548-9344
- name: Zhenchao Wen
  role: author
  orcid: https://orcid.org/0000-0001-7496-1339
- name: Tadakatsu Ohkubo
  role: author
  orcid: https://orcid.org/0000-0003-3548-1951
- name: Kwangseok Kim
  role: author
- name: Hiroaki Sukegawa
  role: author
  orcid: https://orcid.org/0000-0002-4034-7848
- name: Seiji Mitani
  role: author
  orcid: https://orcid.org/0000-0002-1348-0774

## Contact agent



## Publisher

organization: AIP Publishing

## Managing organization



## Keyword

- subject: magnetic thin films
  schema: not_defined
- subject: epitaxial growth
  schema: not_defined
- subject: perpendicular magnetization
  schema: not_defined

## Rights

- description: "© 2024 Author(s). All article content, except where otherwise noted,
    is licensed under a Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)."
  identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: APL Materials
  issn: 2166532X
  volume: '12'
  issue: '10'

## Conference



## Related item



## Funding

- identifier: JPMJCR19J4
  funder_name: Core Research for Evolutional Science and Technology
- identifier: 22H04966
  funder_name: Japan Society for the Promotion of Science
- identifier: 24H00408
  funder_name: Japan Society for the Promotion of Science
- funder_name: Samsung Advanced Institute of Technology

## Instrument



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## Measurement method



## Specimen



## Chemical composition



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## Fileset

- id: 18ccdbbc-9a1f-4a4b-8063-b9d5bec6ff64
  filename: 136-APL Mater. 12, 101120 (2024), Song.pdf
  content_type: application/pdf
  size: 10242534
  md5: a295f1dcd8380a3fc349b0aa47562f5c

## Thumbnail

fileset_id: 18ccdbbc-9a1f-4a4b-8063-b9d5bec6ff64
filename: 136-APL Mater. 12, 101120 (2024), Song.pdf