# Reduced hysteresis in La            <sub>0.7</sub>            Ce            <sub>0.3</sub>            Fe            <sub>11.5</sub>            Si            <sub>1.5</sub>            hydrides by grain size reduction

https://mdr.nims.go.jp/datasets/4fae53bd-6501-4b40-a076-56a2c952c976

## File

- [Mitali STAM 2025.pdf](https://mdr.nims.go.jp/filesets/4871e5e1-9b1f-4c1a-86e9-74e20f528eb4/download) ([Detail](https://mdr.nims.go.jp/filesets/4871e5e1-9b1f-4c1a-86e9-74e20f528eb4.md))

## Id

4fae53bd-6501-4b40-a076-56a2c952c976

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-09-09T05:45:24.837153Z

## Updated at

2025-09-10T03:30:33.814127Z

## Published at

2025-09-10T03:17:58.601170Z

## Doi



## First published url

https://doi.org/10.1080/14686996.2025.2525742

## Date published

2025-12-31

## Recorded date published

2025-12-31

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Reduced hysteresis in La            <sub>0.7</sub>            Ce            <sub>0.3</sub>            Fe            <sub>11.5</sub>            Si            <sub>1.5</sub>            hydrides
    by grain size reduction
  title_type: original
  lang: en

## Description

- description: Magnetic cooling technology, based on the magnetocaloric effect (MCE),
    offers an energy-efficient and eco-friendly alternative to conventional gas compression,
    but is often hindered by large magnetic hysteresis, which limits cyclic performance.
    In this study, we show that the hysteresis of La₀.₇Ce₀.₃(Fe,Si)₁₃ hydrides – a
    promising material for room-temperature refrigeration – can be significantly reduced
    by refining the microstructure of the precursor alloy. Substituting Ce for La
    in (La₀.₇Ce₀.₃)(Fe,Si)₁₃Hx increases hysteresis losses from 12.3 J/kg to 34 J/kg.
    However, preparing the precursor alloy using the melt-spinning technique can almost
    eliminate this hysteresis. Lorentz transmission electron microscopy (Lorentz-TEM)
    shows that phase transition nucleation preferentially occurs at the grain boundaries.
    The hydrides prepared from melt-spun ribbons exhibit a much larger volume fraction
    of grain boundaries due to finer grains, providing a higher density of nucleation
    sites. This reduces the energy barrier for phase transition and weakens the magneto-structural
    phase transition, as confirmed by in-situ X-ray diffraction patterns. Consequently,
    the reduced phase transition energy barrier leads to significantly lower hysteresis
    in melt-spun hydrides samples. These findings demonstrate the potential of microstructure
    engineering to reduce hysteresis in (La,Ce)(Fe,Si)₁₃Hₓ materials for room-temperature
    magnetocaloric applications.
  description_type: abstract
  lang: und

## Creator

- name: Mitali Madhusmita Prusty
  role: author
- name: Sri Harsha Molleti
  role: author
- name: Hiroto Takanobu
  role: author
  orcid: https://orcid.org/0000-0002-6176-5782
- name: Sai Rama Krishna Malladi
  role: author
- name: Xin Tang
  role: author
  orcid: https://orcid.org/0000-0001-6762-6145
- name: Hossein Sepehri-Amin
  role: author
  orcid: https://orcid.org/0000-0002-7856-7897

## Contact agent



## Publisher

organization: Informa UK Limited

## Managing organization



## Keyword

- subject: La(Fe,Si)13
  schema: not_defined
- subject: Magnetocaloric
  schema: not_defined
- subject: Hysteresis
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Science and Technology of Advanced Materials
  issn: '14686996'
  volume: '26'
  issue: '1'
  article_number: '2525742'

## Conference



## Related item



## Funding

- funder_name: 'MEXT program: Data Creation and Utilization-Type Material Research
    and Development Project'
- identifier: JPJSJRP20221608
  funder_name: JSPS International Joint Research Program
- identifier: JPMJER2201
  funder_name: Magnetic Thermal Management Materials Project
- funder_name: JST, Japan
- funder_name: Data Creation and Utilization-Type Material Research and Development
    Project

## 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: 4871e5e1-9b1f-4c1a-86e9-74e20f528eb4
  filename: Mitali STAM 2025.pdf
  content_type: application/pdf
  size: 17593003
  md5: 18577641836886fba891d1f306c3c77f

## Thumbnail

fileset_id: 4871e5e1-9b1f-4c1a-86e9-74e20f528eb4
filename: Mitali STAM 2025.pdf