# Non-equilibrium spin dynamics of the frustrated trication spinel ZnMnCoO<sub>4</sub> in the hierarchical free-energy framework

https://mdr.nims.go.jp/datasets/a3e6e897-adbf-44a6-a89e-31243fb80143

## File

- [Clean-Version-ZMCO-all-black-18Dec2024.pdf](https://mdr.nims.go.jp/filesets/32f9e9f2-303c-4097-9631-b1ba7aa1d1bd/download) ([Detail](https://mdr.nims.go.jp/filesets/32f9e9f2-303c-4097-9631-b1ba7aa1d1bd.md))

## Id

a3e6e897-adbf-44a6-a89e-31243fb80143

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-12-16T07:50:14.461768Z

## Updated at

2026-02-18T03:30:10.125552Z

## Published at

2026-02-18T00:29:35.456966Z

## Doi

https://doi.org/10.48505/nims.6023

## First published url

https://doi.org/10.1088/1361-648x/adb194

## Date published

2025-03-31

## Recorded date published

2025-3-31

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Non-equilibrium spin dynamics of the frustrated trication spinel ZnMnCoO<sub>4</sub>
    in the hierarchical free-energy framework
  title_type: original
  lang: en

## Description

- description: Short-range spin correlations, memory and rejuvenation effects have
    been reported in the trication oxispinel ZnMnCoO4 whose low-temperature spin dynamics,
    triggered by magnetic frustration, could be better explained by the ‘phenomenological’
    hierarchical free-energy model than the short-range droplet theory. Accordingly,
    the aging mechanism of the system had an asymmetric memory response to the positive
    and negative thermal cycles within the cluster-glass state (T < 32.6 K) and demonstrated
    a hierarchical organization of the phase space where its metastable energy states
    undergo continuous splitting with decreasing temperature. An attempt to reproduce
    the time evolution of the isothermal remanent magnetization in the system led
    to an investigation of various relaxation models featuring semi-logarithmic, algebraic,
    fractional or stretched-exponential tails. Nevertheless, Weron’s probabilistic
    relaxation model (here, the fractal character beta ~0.4, the hierarchical constraint
    k > 0, and the order parameter q(T~0.12T_SG) = 1.88 based on a purely stochastic
    approach, was best suited for understanding the slow spin dynamics of the cluster-glass
    phase in the entire temporal range. A comprehensive picture of the magnetic phase
    map was developed for the system, aided by magnetometry techniques and heat-capacity
    studies.
  description_type: abstract
  lang: und

## Creator

- name: Mouli Roy-Chowdhury
  role: author
  orcid: https://orcid.org/0000-0001-9128-5563
- name: Tapati Sarkar
  role: author
  orcid: https://orcid.org/0000-0003-4754-2504
- name: Bruno Weise
  role: author
  orcid: https://orcid.org/0000-0002-4789-2363
- name: Eun Sang Choi
  role: author
  orcid: https://orcid.org/0000-0001-9272-4134
- name: Zhenchao Wen
  role: author
  orcid: https://orcid.org/0000-0001-7496-1339
- name: Subhash Thota
  role: author
  orcid: https://orcid.org/0000-0003-0740-2195

## Contact agent



## Publisher

organization: IOP Publishing

## Managing organization



## Keyword

- subject: Spinel ZnMnCoO4
  schema: not_defined
- subject: Non-equilibrium spin dynamics
  schema: not_defined
- subject: Frustrated trication
  schema: not_defined
- subject: Hierarchical free-energy framework
  schema: not_defined

## Rights

- description: 'This is the Accepted Manuscript version of an article accepted for
    publication in Journal of Physics: Condensed Matter.  IOP Publishing Ltd is not
    responsible for any errors or omissions in this version of the manuscript or any
    version derived from it.  The Version of Record is available online at https://doi.org/10.1088/1361-648X/adb194.'
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2025-02-18
end_date: 2026-02-18

## Journal

- title: 'Journal of Physics: Condensed Matter'
  issn: '09538984'
  volume: '37'
  issue: '13'
  article_number: '135806'

## Conference



## Related item



## Funding

- identifier: VR Grant No. 2021-03675
  funder_name: Vetenskapsrådet
- identifier: 'PMRF ID: 1901274'
  funder_name: Prime Minister’s Research Fellowship, Ministry of Education, Govt.
    of India
- identifier: CRG/2022/006155
  funder_name: DST SERB Core Research Grant
- identifier: CRS/2021-22/09/849
  funder_name: UGC-DAE CSR
- identifier: Cooperative Agreement No. DMR-2128556 and the Stat
  funder_name: NHMFL National Science Foundation
- identifier: SR/FST/PSII- 020/2009
  funder_name: FIST, DST, India,

## Instrument



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## Specimen



## Chemical composition



## Structure for specimen



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## Energy level/transition state



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## Fileset

- id: 32f9e9f2-303c-4097-9631-b1ba7aa1d1bd
  filename: Clean-Version-ZMCO-all-black-18Dec2024.pdf
  content_type: application/pdf
  size: 5901443
  md5: ef766c87cde2d43aab813ecb7b3ea1ba

## Thumbnail

fileset_id: 32f9e9f2-303c-4097-9631-b1ba7aa1d1bd
filename: Clean-Version-ZMCO-all-black-18Dec2024.pdf