# Study on a Stationary Metamagnetic AMR System Using AC Superconducting Magnet

https://mdr.nims.go.jp/datasets/0e8edaf0-07ef-4d22-99ae-dc5bea59ecbe

## File

- [20251127_ISS.pdf](https://mdr.nims.go.jp/filesets/c93367aa-3be6-4581-9b94-69c4633b3f6e/download) ([Detail](https://mdr.nims.go.jp/filesets/c93367aa-3be6-4581-9b94-69c4633b3f6e.md))

## Id

0e8edaf0-07ef-4d22-99ae-dc5bea59ecbe

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-12-29T20:08:46.996101Z

## Updated at

2026-01-07T05:23:50.894696Z

## Published at

2026-01-07T07:20:29.082049Z

## Doi

https://doi.org/10.48505/nims.6112

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## Resource type

conference_presentation

## Manuscript type

na

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## Title

- title: Study on a Stationary Metamagnetic AMR System Using AC Superconducting Magnet
  title_type: original
  lang: en

## Description

- description: Magnetic refrigeration is a cooling technology that utilizes the magnetocaloric
    effect, in which a change in the magnetic field applied to a magnetic material
    induces a temperature change. Compared with gas-based refrigeration, it offers
    higher theoretical efficiency and fewer restrictions related to refrigerant gases.
    Active Magnetic Refrigeration (AMR) employs magnetic materials as both regenerator
    and refrigerant to cover a wide temperature range.  However, the requirement of
    a large magnetic field variation exceeding 1 T and the necessity of stacking multiple
    materials to broaden the operating temperature range remain significant challenges
    toward practical implementation. We designed a stationary magnetic refrigeration
    system composed of an AC superconducting magnet to generate the alternating magnetic
    field required for the cycle, a DC superconducting magnet to control the operating
    temperature range, and the magnetic refrigerant. Therefore, we propose a stationary
    magnetic refrigeration system employing metamagnetic materials, which can exhibit
    a large magnetocaloric effect even under a field variation of only about 1 T.
    We constructed a numerical simulation model of metamagnetic refrigeration and
    evaluated the cooling capacity.
  description_type: abstract
  lang: eng

## Creator

- name: Haruumi Yamamoto
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Hydrogen
    Technology Materials Field/Magnetic Refrigeration System Group
- name: Daiki Kobayashi
  role: author
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Hydrogen
    Technology Materials Field/Magnetic Refrigeration System Group
- name: Kyohei Natsume
  role: author
  orcid: https://orcid.org/0000-0003-3949-6923
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)/Hydrogen
    Technology Materials Field/Magnetic Refrigeration System Group
- name: Koji Kamiya
  role: author
  orcid: https://orcid.org/0000-0002-6765-4485
  organization: National Institute for Materials Science
  department: Research Center for Energy and Environmental Materials (GREEN)

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## Keyword

- subject: 磁気冷凍
  schema: not_defined
- subject: 交流損失
  schema: not_defined
- subject: メタ磁性
  schema: not_defined
- subject: 静止型
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

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## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: The 38th International Symposium on Superconductivity ISS2025
start_date: 2025-12-02
end_date: 2025-12-04
identifier: https://pub.confit.atlas.jp/en/event/iss2025/search

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## Fileset

- id: c93367aa-3be6-4581-9b94-69c4633b3f6e
  filename: 20251127_ISS.pdf
  content_type: application/pdf
  size: 1937419
  md5: 4510865f78ec04d2e3a5ef64e04d38de

## Thumbnail

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filename: 20251127_ISS.pdf