# Ultra-low core loss in Fe-enriched soft magnetic ribbons enabled by nanostructure and high-frequency domain engineering

https://mdr.nims.go.jp/datasets/6375ad73-bc0e-4fff-b279-be37b3ba72a6

## File

- [Gautam et al Nature Comm.pdf](https://mdr.nims.go.jp/filesets/8256db13-f8bf-4ea9-820c-6848d50be4d3/download) ([Detail](https://mdr.nims.go.jp/filesets/8256db13-f8bf-4ea9-820c-6848d50be4d3.md))

## Id

6375ad73-bc0e-4fff-b279-be37b3ba72a6

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-09-30T01:01:39.476233Z

## Updated at

2025-09-30T03:30:25.001644Z

## Published at

2025-09-30T03:18:38.976727Z

## Doi



## First published url

https://doi.org/10.1038/s41467-025-63139-1

## Date published

2025-09-03

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Ultra-low core loss in Fe-enriched soft magnetic ribbons enabled by nanostructure
    and high-frequency domain engineering
  title_type: original
  lang: en

## Description

- description: The next generation of power electronics requires materials with rapid
    response at tens of kilohertz while minimizing core losses. Progress is limited
    by the shortage of ultra-low-loss soft magnets. We demonstrate a nanostructure-engineering
    approach with high-frequency domain control that boosts Fe-enriched amorphous
    ribbons, cutting core loss by 55% to ~75 ± 1.3 W/kg at 10 kHz, 1 T. This arises
    from optimized perpendicular anisotropy induced by positive magnetostriction and
    compressive stress from partial nanocrystallization of α-Fe in an amorphous matrix.
    The resulting narrow stripe-shaped domains (~4.8 ± 0.6 μm) suppress excess loss.
    Our findings mark a key step in soft magnet design, enabling energy-efficient,
    miniaturized power electronics.
  description_type: abstract
  lang: und

## Creator

- name: Ravi Gautam
  role: author
  orcid: https://orcid.org/0000-0002-5442-6328
- name: Shozo Hiramoto
  role: author
- name: Nikita Kulesh
  role: author
  orcid: https://orcid.org/0000-0001-7046-2671
- name: Hiroaki Mamiya
  role: author
  orcid: https://orcid.org/0000-0002-7840-3008
- name: Satoshi Okamoto
  role: author
- name: Nobuhisa Ono
  role: author
- name: Takeshi Ogasawara
  role: author
- name: Tadakatsu Ohkubo
  role: author
  orcid: https://orcid.org/0000-0003-3548-1951
- name: Hossein Sepehri-Amin
  role: author
  orcid: https://orcid.org/0000-0002-7856-7897

## Contact agent



## Publisher

organization: Springer Science and Business Media LLC

## Managing organization



## Keyword

- subject: Soft magnet
  schema: not_defined
- subject: Core loss
  schema: not_defined
- subject: Magnetic domain
  schema: not_defined
- subject: Nanostructure
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Nature Communications
  issn: '20411723'
  volume: '16'
  issue: '1'
  article_number: '8022'

## Conference



## Related item



## Funding

- funder_name: INNOPEL

## 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: 8256db13-f8bf-4ea9-820c-6848d50be4d3
  filename: Gautam et al Nature Comm.pdf
  content_type: application/pdf
  size: 10441442
  md5: b3ce22b0649349f0306f2255c39cb90d

## Thumbnail

fileset_id: 8256db13-f8bf-4ea9-820c-6848d50be4d3
filename: Gautam et al Nature Comm.pdf