# High-coercivity SmFe12-based anisotropic sintered magnets by Cu addition

https://mdr.nims.go.jp/datasets/335ae27c-b4ab-46be-9416-5b7689287c88

## File

- [Srinithi et al Acta Mater 2023.pdf](https://mdr.nims.go.jp/filesets/e66b8983-b668-43d8-be14-bc13f38edac9/download) ([Detail](https://mdr.nims.go.jp/filesets/e66b8983-b668-43d8-be14-bc13f38edac9.md))
- [Final version-Manuscript.docx](https://mdr.nims.go.jp/filesets/c7df9532-d33e-42e4-b7f2-4060bd03acb9/download) ([Detail](https://mdr.nims.go.jp/filesets/c7df9532-d33e-42e4-b7f2-4060bd03acb9.md))

## Id

335ae27c-b4ab-46be-9416-5b7689287c88

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-08-19T23:34:34.997212Z

## Updated at

2025-07-08T06:15:26.076049Z

## Published at

2025-07-08T06:13:00.621233Z

## Doi

https://doi.org/10.48505/nims.4913

## First published url

https://doi.org/10.1016/j.actamat.2023.119111

## Date published

2023-06-26

## Recorded date published

2023-9

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: High-coercivity SmFe12-based anisotropic sintered magnets by Cu addition
  title_type: original
  lang: en

## Description

- description: 'We achieved a record-high coercivity of 1.40 T in a SmFe12-based ThMn12-type
    anisotropic sintered magnet. This magnet was prepared by sintering jet-milled
    powder made from strip-cast alloys with a nominal composition of Sm8Fe73.5Ti8V8Al2Cu0.5,
    using the conventional process for anisotropic sintered magnet production. Detailed
    microstructural investigations conducted using scanning electron microscopy and
    transmission electron microscopy revealed that the formation of Fe-lean intergranular
    phases (with < 20 at.% of Fe) surrounding the fine SmFe12 phase grains resulted
    in the high coercivity. Nanobeam electron diffraction patterns showed that these
    Fe-lean intergranular phases (IGPs) exhibiting excellent wettability in this magnet
    are mainly composed of two phases: a hexagonal close-packed Mg-type Sm-based phase
    and a primitive cubic CsCl-type SmCu-based phase, which co-exist in the same intergranular
    region. Such Fe-lean IGPs minimize the intergranular exchange coupling in the
    SmFe12 main phase, which contributes to the high coercivity, as revealed by magneto-optical
    Kerr effect microscopy. Overall, this study provides detailed microstructure-coercivity
    correlations and insights for the future development of high-performance SmFe12-based
    sintered magnets.'
  description_type: abstract
  lang: und

## Creator

- name: A.K. Srinithi
  role: author
- name: Xin Tang
  role: author
  orcid: https://orcid.org/0000-0001-6762-6145
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: H. Sepehri-Amin
  role: author
  orcid: https://orcid.org/0000-0002-7856-7897
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: J. Zhang
  role: author
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: T. Ohkubo
  role: author
  orcid: https://orcid.org/0000-0003-3548-1951
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: K. Hono
  role: author
  orcid: https://orcid.org/0000-0001-7367-0193
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Hard magnets
  schema: not_defined
- subject: SmFe12 sintered magnets
  schema: not_defined
- subject: Coercivity
  schema: not_defined
- subject: Microstructure
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2023-06-26
end_date: 2025-06-26

## Journal

- title: Acta Materialia
  issn: '13596454'
  volume: '256'
  article_number: '119111'

## Conference



## Related item



## Funding



## 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: e66b8983-b668-43d8-be14-bc13f38edac9
  filename: Srinithi et al Acta Mater 2023.pdf
  content_type: application/pdf
  size: 15029963
  md5: 3df9db70b62b83c22bb60df1f5a4e304
- id: c7df9532-d33e-42e4-b7f2-4060bd03acb9
  filename: Final version-Manuscript.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 15076480
  md5: bb6ebc5361a5a51b0877b6a1b9341aa0

## Thumbnail

fileset_id: c7df9532-d33e-42e4-b7f2-4060bd03acb9
filename: Final version-Manuscript.docx