# Opening the Hysteresis Loop in MAB Magnets: Experimental and Computational Studies of CrMn<sub>4</sub>SiB<sub>2</sub> and Mo<sub>0.8</sub>Mn<sub>4.2</sub>SiB<sub>2</sub>

https://mdr.nims.go.jp/datasets/dbce3f5b-0528-4546-9a2c-2cbc6816f03e

## File

- [ChemMater-V37-2349-MAB.pdf](https://mdr.nims.go.jp/filesets/c532d248-e77c-4b1a-8458-a3793875dc4f/download) ([Detail](https://mdr.nims.go.jp/filesets/c532d248-e77c-4b1a-8458-a3793875dc4f.md))

## Id

dbce3f5b-0528-4546-9a2c-2cbc6816f03e

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-11-07T00:50:50.326062Z

## Updated at

2025-11-07T23:30:26.088262Z

## Published at

2025-11-07T23:21:17.898152Z

## Doi



## First published url

https://doi.org/10.1021/acs.chemmater.5c00187

## Date published

2025-03-25

## Recorded date published

2025-3-25

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'Opening the Hysteresis Loop in MAB Magnets: Experimental and Computational
    Studies of CrMn<sub>4</sub>SiB<sub>2</sub> and Mo<sub>0.8</sub>Mn<sub>4.2</sub>SiB<sub>2</sub>'
  title_type: original
  lang: en

## Description

- description: 'This study presents the synthesis and magnetic characterization of
    two new quaternary MAB phases: CrMn4SiB₂ and Mo0.8Mn4.2SiB2. Using a refined synthesis
    method, we successfully produced single-phase compounds, overcoming previous challenges
    associated with impurity phases. Both compounds crystallize in the tetragonal
    space group I4/mcm, with Mo demonstrating distinct site preferences in Mo0.8Mn4.2SiB2.
    Magnetic measurements indicate the presence of long-range ferromagnetic interactions,
    with Curie temperatures (TC) of approximately 270 K for CrMn4SiB₂ and 340 K for
    Mo0.8Mn4.2SiB2. Field-dependent magnetization measurements indicate a saturation
    magnetization (Ms) of 5.128 μB/f.u. (at 5 K) for CrMn4SiB₂ and 6.214 μB/f.u. (at
    5 K) and 3.692 μB/f.u. (at 300 K) for Mo0.8Mn4.2SiB2. The introduction of Mo or
    Cr in the ternary parent compound Mn5SiB2, opens a hysteresis for the first time
    in this class of T2 phases, with intrinsic coercivities of Hc = 5.57 kA/m for
    CrMn4SiB₂ and 6.53 kA/m for Mo0.8Mn4.2SiB2. DFT calculations confirm the ferromagnetic
    ordering while the magnetocrystalline anisotropy energy (MAE) calculations show
    that CrMn4SiB2 and MoMn4SiB2 have in-plane anisotropy with higher MAE values than
    Mn5SiB2, thus confirming experimental findings. This research not only introduces
    a new synthesis pathway toward single-phase T2-based quaternary materials, but
    it also opens a new avenue toward MAB-based permanent magnets.'
  description_type: abstract
  lang: und

## Creator

- name: Shola E. Adeniji
  role: author
- name: Alexei A. Belik
  role: author
  orcid: https://orcid.org/0000-0001-9031-2355
  organization: National Institute for Materials Science
- name: Takao Mori
  role: author
  orcid: https://orcid.org/0000-0003-2682-1846
  organization: National Institute for Materials Science
- name: Boniface P. T. Fokwa
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: MAB Magnets
  schema: not_defined
- subject: magnetic properties
  schema: not_defined
- subject: magneto crystalline anisotropy
  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: Chemistry of Materials
  issn: '15205002'
  volume: '37'
  issue: '6'
  start_page: 2349
  end_page: 2357

## Conference



## Related item



## Funding

- identifier: JPMJMI19A1
  funder_name: JST-Mirai Program
- funder_name: Committee on Research
- funder_name: San Diego Supercomputer Center

## 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



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## Fileset

- id: c532d248-e77c-4b1a-8458-a3793875dc4f
  filename: ChemMater-V37-2349-MAB.pdf
  content_type: application/pdf
  size: 5644452
  md5: e4e2b72e5d65e5d5d28ba4e5ff1f95bc

## Thumbnail

fileset_id: c532d248-e77c-4b1a-8458-a3793875dc4f
filename: ChemMater-V37-2349-MAB.pdf