# Comparison of FePt high-density magnetic recording media development between large language models and experimental experts: do LLMs recommend fluoride as a segregant?

https://mdr.nims.go.jp/datasets/7804eb5a-bede-4266-949d-3534f87ab970

## File

- [Comparison of FePt high-density magnetic recording media development between large language models and experimental experts  do LLMs recommend fluorid.pdf](https://mdr.nims.go.jp/filesets/a1062078-382a-44b9-8be4-29493215aba5/download) ([Detail](https://mdr.nims.go.jp/filesets/a1062078-382a-44b9-8be4-29493215aba5.md))

## Id

7804eb5a-bede-4266-949d-3534f87ab970

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-04-17T02:21:41.712359Z

## Updated at

2026-04-21T04:35:17.366104Z

## Published at

2026-04-21T09:26:11.338710Z

## Doi



## First published url

https://doi.org/10.1080/27660400.2026.2613512

## Date published

2026-12-31

## Recorded date published

2026-12-31

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'Comparison of FePt high-density magnetic recording media development between
    large language models and experimental experts: do LLMs recommend fluoride as
    a segregant?'
  title_type: original
  lang: en

## Description

- description: 'We investigated segregant development for FePt high-density magnetic
    recording media using LLMs and identified new fluoride-based materials. By increasing
    the temperature of the softmax function to select probable vocabularies, we successfully
    incorporated the prior knowledge involved in LLM training into the material selection
    process (exploratory generation) and identified LaF3 as an optimal material. Meanwhile,
    we independently conducted sputtering deposition of FePt-LaF3 nanogranular samples
    and verified whether the LLM could reproduce the results. The inhomogeneity in
    the surface chemical composition of FePt-LaF3 in the non-equilibrium state of
    sputtering were also reproduced by the LLM, leading to the identification of AlF3
    as an alternative segregant. Phenomena that can occur in physical experiments
    are almost accurately reproduced by LLM, demonstrating the usefulness of LLM predictions
    in material development. '
  description_type: abstract
  lang: und

## Creator

- name: Masashi Ishii
  role: author
  orcid: https://orcid.org/0000-0003-0357-2832
- name: Yasufumi Watanabe
  role: author
- name: Ippei Suzuki
  role: author
  orcid: https://orcid.org/0000-0002-8932-8226
- name: Yukiko K. Takahashi
  role: author
  orcid: https://orcid.org/0000-0001-9197-7236

## Contact agent



## Publisher

organization: Informa UK Limited

## Managing organization



## Keyword

- subject: large language model
  schema: not_defined
- subject: exploratory generation
  schema: not_defined
- subject: FePt nanogranular film
  schema: not_defined
- subject: fluoride segregant
  schema: not_defined
- subject: LaF3
  schema: not_defined
- subject: AlF3
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: 'Science and Technology of Advanced Materials: Methods'
  issn: '27660400'
  volume: '6'
  issue: '1'
  article_number: '2613512'

## Conference



## Related item



## Funding

- identifier: JPMXP1122715503
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPJ012308
  funder_name: Council for Science, Technology and Innovation

## 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: a1062078-382a-44b9-8be4-29493215aba5
  filename: Comparison of FePt high-density magnetic recording media development between
    large language models and experimental experts  do LLMs recommend fluorid.pdf
  content_type: application/pdf
  size: 12561454
  md5: 34bdd9e1f103ea74e516f18ffa5a6c60

## Thumbnail

fileset_id: a1062078-382a-44b9-8be4-29493215aba5
filename: Comparison of FePt high-density magnetic recording media development between
  large language models and experimental experts  do LLMs recommend fluorid.pdf