# Discovery of collective nonjumping motions leading to Johari–Goldstein process of stress relaxation in model ionic glass

https://mdr.nims.go.jp/datasets/1ae27fc5-84f8-4787-9cab-1da34de35435

## File

- [1-s2.0-S1359645424008851-main.pdf](https://mdr.nims.go.jp/filesets/41bb0e35-6279-497c-8f53-8f84dc4d061c/download) ([Detail](https://mdr.nims.go.jp/filesets/41bb0e35-6279-497c-8f53-8f84dc4d061c.md))

## Id

1ae27fc5-84f8-4787-9cab-1da34de35435

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-01-07T12:03:33.701430Z

## Updated at

2025-01-08T07:30:54.802288Z

## Published at

2025-01-08T07:30:54.854352Z

## Doi



## First published url

https://doi.org/10.1016/j.actamat.2024.120536

## Date published

2024-11-04

## Recorded date published

2025-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Discovery of collective nonjumping motions leading to Johari–Goldstein process
    of stress relaxation in model ionic glass
  title_type: original
  lang: en

## Description

- description: The slow β, or Johari–Goldstein (JG) relaxation process, has been widely
    observed in glasses and is known to induce the stress relaxation associated with
    mechanical properties. So far, jumping motions of only a fraction of the particles
    were believed to contribute to the JG process in glass. However, there is no direct
    experimental evidence of the atomic-scale images due to the difficulties in microscopic
    observation. In this study, atomic motions in the quasi-spherical model ionic-glass-former
    Ca0.4K0.6(NO3)1.4 were microscopically observed with one-angstrom resolution,
    the highest resolution to date, using X-ray time-domain interferometry. The microscopic
    experiment directly indicated that most particles underwent angstrom-scale motions
    in the time scale of the JG relaxation. This result was further supported by molecular
    dynamics (MD) simulations. A combined study of experiments and MD simulations
    revealed that most particles contributed to the JG process through unexpected
    collective nonjumping motions with angstrom-scale displacement, activated by jumping
    motions of a fraction of particles. The discovery of nonjumping motions by our
    atomic-scale dynamic observations has considerably advanced our understanding
    of the puzzling mechanism of the JG process.
  description_type: abstract
  lang: und

## Creator

- name: Makina Saito
  role: author
- name: Takeaki Araki
  role: author
- name: Yohei Onodera
  role: author
  orcid: https://orcid.org/0000-0002-3080-6991
  organization: National Institute for Materials Science
- name: Koji Ohara
  role: author
- name: Makoto Seto
  role: author
- name: Yoshitaka Yoda
  role: author
- name: Yusuke Wakabayashi
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Ionic glass
  schema: not_defined
- subject: Molecular dynamics simulation
  schema: not_defined
- subject: Johari–Goldstein relaxation
  schema: not_defined
- subject: Stress relaxation
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Acta Materialia
  issn: '13596454'
  volume: '284'
  article_number: '120536'

## Conference



## Related item



## Funding

- identifier: JPMJCR2095
  funder_name: Core Research for Evolutional Science and Technology
- identifier: 21K03486
  funder_name: Japan Society for the Promotion of Science
- identifier: 24K00592
  funder_name: Japan Society for the Promotion of Science
- funder_name: University of Tokyo
- identifier: 2016A1084
  funder_name: Toyo University
- identifier: 2020A1329
  funder_name: Toyo University
- identifier: 2019B2100
  funder_name: Toyo University
- identifier: 2016A1461
  funder_name: Toyo University
- identifier: 2020A0694
  funder_name: Toyo University
- funder_name: Japan Science and Technology Corporation
- funder_name: Iwatani Naoji Foundation
- funder_name: Japan Society for the Promotion of Science London

## 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



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## Custom property



## Fileset

- id: 41bb0e35-6279-497c-8f53-8f84dc4d061c
  filename: 1-s2.0-S1359645424008851-main.pdf
  content_type: application/pdf
  size: 6032419
  md5: ce8c7b479fa980cdcc037d3a061b0cd8

## Thumbnail

fileset_id: 41bb0e35-6279-497c-8f53-8f84dc4d061c
filename: 1-s2.0-S1359645424008851-main.pdf