# Recent advances in the development of high-performance HRE-free and  RE-lean permanent magnets

https://mdr.nims.go.jp/datasets/db9a6719-3845-4dde-916e-0bd15cc20c3f

## File

- [REPM-2025 Navid.docx](https://mdr.nims.go.jp/filesets/5fb43d2c-7540-400d-9e9d-6af44f8ddfab/download) ([Detail](https://mdr.nims.go.jp/filesets/5fb43d2c-7540-400d-9e9d-6af44f8ddfab.md))

## Id

db9a6719-3845-4dde-916e-0bd15cc20c3f

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-01-13T00:13:49.974799Z

## Updated at

2026-01-14T06:01:40.035628Z

## Published at

2026-01-14T07:22:16.147097Z

## Doi

https://doi.org/10.48505/nims.6124

## First published url



## Date published



## Recorded date published



## Resource type

conference_presentation

## Manuscript type

authors_original

## Collection



## Title

- title: Recent advances in the development of high-performance HRE-free and  RE-lean
    permanent magnets
  title_type: alternative
  lang: ja
- title: Recent advances in the development of high-performance HRE-free and  RE-lean
    permanent magnets
  title_type: original
  lang: en

## Description

- description: The demand for (Nd,Dy)-Fe-B permanent magnets is growing due to their
    applications in green energy conversion and transportation. To ensure sustainable
    long-term production, it is essential to reduce dependence on critical elements
    like Dy and diversify the use of rare earths while maintaining high coercivity
    and energy density in the magnets. In this talk, we will discuss how the integration
    of advanced materials processing, multi-scale microstructural characterization,
    FIB/SEM tomography-based micromagnetic simulations, and machine learning models
    has contributed to the development of high-performance permanent magnets that
    are free of heavy rare earths or contain minimal rare-earth content.
  description_type: abstract
  lang: eng

## Creator

- name: SEPEHRI AMIN Hossein
  role: author
  orcid: https://orcid.org/0000-0002-7856-7897
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Green Magnetic
    Materials Group
- name: KULESH Nikita
  role: author
  orcid: https://orcid.org/0000-0001-7046-2671
  organization: National Institute for Materials Science
  department: International Center for Young Scientists
- name: ZHANG Jiasheng
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Green Magnetic
    Materials Group
- name: KAUTSAR Zulfa Hilmi
  role: author
  orcid: https://orcid.org/0000-0002-5318-9033
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Green Magnetic
    Materials Group
- name: BOLYACHKIN Anton
  role: author
  orcid: https://orcid.org/0000-0003-0420-1806
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Green Magnetic
    Materials Group
- name: TANG Xin
  role: author
  orcid: https://orcid.org/0000-0001-6762-6145
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials/Green Magnetic
    Materials Group
- name: H. Nakamura
  role: author
  organization: Shin-Etsu Chemical
- name: OHKUBO Tadakatsu
  role: author
  orcid: https://orcid.org/0000-0003-3548-1951
  organization: National Institute for Materials Science
  department: Research Center for Magnetic and Spintronic Materials
- name: HONO Kazuhiro
  role: author
  orcid: https://orcid.org/0000-0001-7367-0193
  organization: National Institute for Materials Science

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## Keyword

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

## Rights

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

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## Data origin



## Embargo



## Journal



## Conference

name: The 28th International Workshop on Rare Earth and Future Permanent Magnets and
  Their Applications (REPM2025)
start_date: 2025-07-27
end_date: 2025-07-31
identifier: https://www.nims.go.jp/mmu/repm2025/

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## Fileset

- id: 5fb43d2c-7540-400d-9e9d-6af44f8ddfab
  filename: REPM-2025 Navid.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 1980068
  md5: 252da806511a324f5b4561c932c6f6e5

## Thumbnail

fileset_id: 5fb43d2c-7540-400d-9e9d-6af44f8ddfab
filename: REPM-2025 Navid.docx