# Phase-field modeling of microstructure formation in FePt-C nanogranular films sputtered on MgO

https://mdr.nims.go.jp/datasets/fe141c4f-9e04-48eb-9087-ce6617a01855

## File

- [1-s2.0-S0264127525017356-main.pdf](https://mdr.nims.go.jp/filesets/6eacc15a-f827-4e54-bf7e-2d5ed9513ca2/download) ([Detail](https://mdr.nims.go.jp/filesets/6eacc15a-f827-4e54-bf7e-2d5ed9513ca2.md))

## Id

fe141c4f-9e04-48eb-9087-ce6617a01855

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-12-15T09:25:18.460087Z

## Updated at

2025-12-19T07:30:13.676914Z

## Published at

2025-12-19T05:11:39.055367Z

## Doi



## First published url

https://doi.org/10.1016/j.matdes.2025.115314

## Date published

2025-12-11

## Recorded date published

2026-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Phase-field modeling of microstructure formation in FePt-C nanogranular films
    sputtered on MgO
  title_type: original
  lang: en

## Description

- description: 'This study investigates microstructure formation in FePt-C nanogranular
    films deposited on MgO substrates during sputtering using the phase-field method,
    aiming to identify the key factors promoting the creation of an island-like microstructure,
    which is essential for the high recording density required in hard disk drives.
    Simulations reproduced the growth and coarsening of FePt grains, indicating that
    elastic-strain energy relaxation contributes significantly toward the formation
    of well-isolated FePt islands. The addition of C as a segregant shifts the position
    of the atoms supplied by sputtering closer to the top surface of the FePt grains,
    promoting their vertical growth. Furthermore, the film microstructure varies with
    the sputtering rate: lower rates result in coarser structures, whereas higher
    rates result in finer structures, albeit at the risk of grain coalescence. The
    results of this study suggest that the final microstructure is determined by the
    interplay of energetic and kinetic factors, specifically the interfacial and elastic
    strain energies and the diffusion and sputtering rates. These findings will enable
    the formulation of fabrication strategies for optimal high-performance FePt magnetic
    recording films.'
  description_type: abstract
  lang: und

## Creator

- name: Yusuke Matsuoka
  role: author
  orcid: https://orcid.org/0000-0001-5300-1726
- name: Machiko Ode
  role: author
  orcid: https://orcid.org/0000-0002-9500-5466
- name: Taichi Abe
  role: author
  orcid: https://orcid.org/0000-0002-5065-0939
- name: Toshiyuki Koyama
  role: author
  orcid: https://orcid.org/0000-0001-7424-4858
- name: Yukiko K. Takahashi
  role: author
  orcid: https://orcid.org/0000-0001-9197-7236

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Phase-field method
  schema: not_defined
- subject: Simulation
  schema: not_defined
- subject: L10 FePt film
  schema: not_defined
- subject: Magnetic thin films
  schema: not_defined
- subject: Heat-assisted magnetic recording
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Materials & Design
  issn: '02641275'
  volume: '261'
  article_number: '115314'

## Conference



## Related item



## Funding

- identifier: JPMXP1122715503
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
  description: 'MEXT Program: Data Creation and Utilization-Type Material Research
    and Development Project'
- identifier: JPMJCR22C3
  funder_name: Japan Science and Technology Agency, Core Research for Evolutional
    Science and Technology
  description: サーマルマネージメント多値磁気記録システムの開発

## Instrument



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## Measurement method



## Specimen



## Chemical composition



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## Computational method



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## Fileset

- id: 6eacc15a-f827-4e54-bf7e-2d5ed9513ca2
  filename: 1-s2.0-S0264127525017356-main.pdf
  content_type: application/pdf
  size: 12255181
  md5: 63cf11a8f82c7b03eea1ac730683f68f

## Thumbnail

fileset_id: 6eacc15a-f827-4e54-bf7e-2d5ed9513ca2
filename: 1-s2.0-S0264127525017356-main.pdf