# Insights into reduction of hysteresis in (Mn, Fe)2(P, Si) compounds by experimental approach and Landau theory

https://mdr.nims.go.jp/datasets/6da82c22-1e03-4a1c-8528-546182ccb64e

## File

- [submitted Manuscript.docx](https://mdr.nims.go.jp/filesets/1d81eedf-2635-4f51-bcaf-f02be4adf836/download) ([Detail](https://mdr.nims.go.jp/filesets/1d81eedf-2635-4f51-bcaf-f02be4adf836.md))

## Id

6da82c22-1e03-4a1c-8528-546182ccb64e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-16T10:01:24.488112Z

## Updated at

2024-11-18T05:08:34.618253Z

## Published at

2026-07-28T23:27:06.917358Z

## Doi

https://doi.org/10.48505/nims.4988

## First published url

https://doi.org/10.1016/j.mtla.2024.102195

## Date published

2024-07-29

## Recorded date published

2024-9

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Insights into reduction of hysteresis in (Mn, Fe)2(P, Si) compounds by experimental
    approach and Landau theory
  title_type: original
  lang: en

## Description

- description: The giant magnetocaloric effect in (Mn, Fe)2(P, Si) based alloys arises
    from a magnetoelastic ferromagnetic-paramagnetic (FM-PM) phase transition accompanied
    by a large thermal hysteresis. The thermal hysteresis leads to an undesirable
    irreversibility of the magnetocaloric effect (MCE) during cyclic operation, impeding
    the practical application in solid-state magnetic refrigeration. Here, we present
    pre-existing PM nuclei play a role in reducing hysteresis. A combinatorial analysis,
    using in situ X-ray diffraction (XRD) and magneto-optical Kerr effect (MOKE) microscopy,
    reveals that the residual PM phases at the ferromagnetic state of the compound
    acts as the nuclei for the growth of the PM phases. This is kinetically favorable
    for the FM-PM phase transition and contributes to a smaller hysteresis from an
    extrinsic perspective. In addition, the smaller changes in the lattice constants
    during the phase transition indicates a weakened first-order phase transition.
    Through a combined effect of intrinsic and extrinsic contributions, a giant MCE
    in the magnetic entropy change of 16 J kg–1 K−1 under 2 T and a low thermal hysteresis
    of 3.0 K were achieved in a basic Mn–Fe–Si–P quaternary system for room temperature
    applications. Furthermore, based on Landau theory and experimentally obtained
    data, we established an H-T phase diagram and unveiled the crucial role of the
    magnetoelastic coupling in manipulating thermal hysteresis. Overall, the findings
    in this work offer a strategy to mitigate hysteresis while retaining a large MCE
    through extrinsic control.
  description_type: abstract
  lang: und

## Creator

- name: Z. Wang
  role: author
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: E. Dengina
  role: author
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Anna Kosogor
  role: author
- name: T. Hiroto
  role: author
  orcid: https://orcid.org/0000-0002-6176-5782
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- 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: N. Kulesh
  role: author
  orcid: https://orcid.org/0000-0001-7046-2671
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: A. Bolyachkin
  role: author
  orcid: https://orcid.org/0000-0003-0420-1806
  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: H. Sepehri-Amin
  role: author
  orcid: https://orcid.org/0000-0002-7856-7897
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: magnetocaloric materials
  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: 2024-07-29
end_date: 2026-07-29

## Journal

- title: Materialia
  issn: '25891529'
  volume: '37'
  start_page: 102195
  end_page: 102200
  article_number: '102195'

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## Fileset

- id: 1d81eedf-2635-4f51-bcaf-f02be4adf836
  filename: submitted Manuscript.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 4649573
  md5: af5cae602542dde18e053ba56723af5d

## Thumbnail

fileset_id: 1d81eedf-2635-4f51-bcaf-f02be4adf836
filename: submitted Manuscript.docx