# Toward Maximum Utilization of Heavy Rare Earths in Sintered Nd–Fe–B Magnets by Grain Boundary Diffusion Source and Application Area Optimization

https://mdr.nims.go.jp/datasets/047bfb9a-8038-4d85-880c-55721aa6d289

## File

- [Adv Eng Mater - 2025 - Durgun - Toward Maximum Utilization of Heavy Rare Earths in Sintered Nd Fe B Magnets by Grain.pdf](https://mdr.nims.go.jp/filesets/67344548-129c-4115-808e-c16b1bca1d66/download) ([Detail](https://mdr.nims.go.jp/filesets/67344548-129c-4115-808e-c16b1bca1d66.md))

## Id

047bfb9a-8038-4d85-880c-55721aa6d289

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-09-30T00:07:12.921567Z

## Updated at

2025-09-30T03:30:19.794776Z

## Published at

2025-09-30T03:18:38.083606Z

## Doi



## First published url

https://doi.org/10.1002/adem.202501145

## Date published

2025-09-26

## Recorded date published

2025-11

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Toward Maximum Utilization of Heavy Rare Earths in Sintered Nd–Fe–B Magnets
    by Grain Boundary Diffusion Source and Application Area Optimization
  title_type: original
  lang: en

## Description

- description: The study focuses on reducing costly heavy rare earth (HRE) elements
    Dy and Tb in NdFeB magnets while maintaining high coercivity for electric motors.
    By optimizing the grain boundary diffusion process (GBDP) with TbHx and Tb-containing
    alloys, researchers achieved highly efficient Tb utilization. A normalized coercivity
    gain of 3866 kA/m/wt% Tb (4.86 T/wt% Tb) was obtained with minimal remanence loss
    (1.45 T to 1.43 T). This approach enables HRE-balanced, high-performance magnets
    for sustainable e-motor applications.
  description_type: abstract
  lang: und

## Creator

- name: Abdullatif Durgun
  role: author
- name: Dominik Ohmer
  role: author
  orcid: https://orcid.org/0000-0002-7129-331X
- name: Matthias Katter
  role: author
- name: Andreas Thul
  role: author
  orcid: https://orcid.org/0000-0001-6930-3999
- name: Simon Steentjes
  role: author
  orcid: https://orcid.org/0000-0002-3346-4560
- name: Hossein Sepehri Amin
  role: author
  orcid: https://orcid.org/0000-0002-7856-7897
- name: Oliver Gutfleisch
  role: author
  orcid: https://orcid.org/0000-0001-8021-3839
- name: Imants Dirba
  role: author
  orcid: https://orcid.org/0000-0002-5335-2152

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: Permanent Magnet
  schema: not_defined
- subject: Nd-Fe-B
  schema: not_defined
- subject: Coercivity
  schema: not_defined
- subject: Diffusion process
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Advanced Engineering Materials
  issn: '14381656'
  article_number: e202501145

## Conference



## Related item



## Funding

- identifier: '405553726'
  funder_name: Deutsche Forschungsgemeinschaft
- identifier: 03VP10552
  funder_name: Bundesministerium für Bildung und Forschung

## 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: 67344548-129c-4115-808e-c16b1bca1d66
  filename: Adv Eng Mater - 2025 - Durgun - Toward Maximum Utilization of Heavy Rare
    Earths in Sintered Nd Fe B Magnets by Grain.pdf
  content_type: application/pdf
  size: 2570246
  md5: 5188905d02499c168a41ed5684205442

## Thumbnail

fileset_id: 67344548-129c-4115-808e-c16b1bca1d66
filename: Adv Eng Mater - 2025 - Durgun - Toward Maximum Utilization of Heavy Rare
  Earths in Sintered Nd Fe B Magnets by Grain.pdf