# Tomography-based digital twin of Nd-Fe-B permanent magnets

https://mdr.nims.go.jp/datasets/abf10a43-880c-4713-88f1-785c040ea7f4

## File

- [Anton NPJ Comp.pdf](https://mdr.nims.go.jp/filesets/6b08a1f2-f019-4ac0-a039-ec6bdd806b89/download) ([Detail](https://mdr.nims.go.jp/filesets/6b08a1f2-f019-4ac0-a039-ec6bdd806b89.md))

## Id

abf10a43-880c-4713-88f1-785c040ea7f4

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-06-27T05:56:34.522735Z

## Updated at

2024-10-21T03:30:52.038267Z

## Published at

2024-10-21T03:30:52.102257Z

## Doi



## First published url

https://doi.org/10.1038/s41524-024-01218-5

## Date published

2024-02-12

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Tomography-based digital twin of Nd-Fe-B permanent magnets
  title_type: original
  lang: en

## Description

- description: Many functional materials are designed at the multiscale level. To
    properly simulate their physical properties, large and sophisticated computer
    models capable of replicating the microstructure with nm-level accuracy are required.
    This is the case for permanent magnets, for which there is a long-standing problem
    of a significant offset between simulated and experimental coercivity. To overcome
    this problem and resolve the Brown paradox, we developed a novel approach to construct
    large-scale finite element models based on the microstructure tomography. It was
    applied to ultrafine-grained Nd-Fe-B magnets for which, besides the shape, size,
    and packing of the grains, we reconstructed individual regions of thin intergranular
    phase separated by triple junctions. Such micromagnetic model managed to reproduce
    not only experimental coercivity but also its mechanism according to the angular
    dependence of coercivity. Furthermore, a remarkable role of thin triple junctions
    as nucleation centers for magnetization reversa
  description_type: abstract
  lang: eng

## Creator

- name: Anton Bolyachkin
  role: author
  orcid: https://orcid.org/0000-0003-0420-1806
  organization: National Institute for Materials Science
- name: Ekaterina Dengina
  role: author
  organization: National Institute for Materials Science
- name: Nikita Kulesh
  role: author
  orcid: https://orcid.org/0000-0001-7046-2671
  organization: National Institute for Materials Science
- name: Xin Tang
  role: author
  orcid: https://orcid.org/0000-0001-6762-6145
  organization: National Institute for Materials Science
- name: Hossein Sepehri-Amin
  role: author
  orcid: https://orcid.org/0000-0002-7856-7897
  organization: National Institute for Materials Science
- name: Tadakatsu Ohkubo
  role: author
  orcid: https://orcid.org/0000-0003-3548-1951
  organization: National Institute for Materials Science
- name: Kazuhiro Hono
  role: author
  orcid: https://orcid.org/0000-0001-7367-0193
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Hard magnets
  schema: not_defined
- subject: Digital Twin
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: npj Computational Materials
  issn: '20573960'
  volume: '10'
  issue: '1'
  article_number: '34'

## Conference



## Related item



## Funding

- identifier: JPMXP1122715503
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMXP1122715503
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMXP1122715503
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMXP1122715503
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMXP1122715503
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMXP1122715503
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JPMXP1122715503
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JP23H01674
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: JP23H01674
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: JP23H01674
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: JP23H01674
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: JP23H01674
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: JP23H01674
  funder_name: MEXT | Japan Society for the Promotion of Science
- identifier: JP23H01674
  funder_name: MEXT | 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



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 6b08a1f2-f019-4ac0-a039-ec6bdd806b89
  filename: Anton NPJ Comp.pdf
  content_type: application/pdf
  size: 3084089
  md5: f0acde834e75a3cb7d47f3d4c96ef61d

## Thumbnail

fileset_id: 6b08a1f2-f019-4ac0-a039-ec6bdd806b89
filename: Anton NPJ Comp.pdf