# The variation of oxygen and cation vacancies in strontium titanate polycrystals flash-sintered under direct and alternating electric fields

https://mdr.nims.go.jp/datasets/09402975-26ad-4a01-8732-21992ceeace6

## Files

- [Revised_ver2_Inagaki_etal_UNMARKED.docx](https://mdr.nims.go.jp/filesets/4b2bdf8c-f338-4e8f-a833-4cb7a94ecbc6/download) ([Detail](https://mdr.nims.go.jp/filesets/4b2bdf8c-f338-4e8f-a833-4cb7a94ecbc6.md))

## Id

09402975-26ad-4a01-8732-21992ceeace6

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-09-29T01:51:24.981814Z

## Updated at

2025-09-29T07:30:21.879239Z

## Published at

2025-09-29T07:22:58.400376Z

## Doi

https://doi.org/10.48505/nims.5785

## First published url

https://doi.org/10.1016/j.jeurceramsoc.2025.117611

## Date published

2025-06-07

## Recorded date published

2025-12

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: The variation of oxygen and cation vacancies in strontium titanate polycrystals
    flash-sintered under direct and alternating electric fields
  title_type: original
  lang: en

## Description

- description: Point defect formation was investigated based on the electron energy-loss
    near-edge structure observed within the grains and 10 nm from the grain boundaries
    of strontium titanate flash-sintered under direct (DC) and alternating (AC) electric
    fields with strengths of 100 and 200 V/cm. More oxygen vacancies were generated
    in both regions under the DC field than under no field, but the same behavior was
    only observed under the AC field of 200 V/cm. Similarly, strontium vacancies were
    generated in both regions under the DC field but only within the grains under the
    AC field. The discrepancies in vacancy formation may be related to their generation
    and annihilation rates at grain boundaries under AC electric fields. The intricacies
    of the electric field-induced vacancy formation mechanism require further elucidation,
    but this work underscores the importance of considering the roles of both oxygen
    and cation vacancies in the accelerated mass diffusion during flash sintering.
  description_type: abstract
  lang: und

## Creator

- name: Shunta Inagaki
  role: author
- name: Tomoharu Tokunaga
  role: author
- name: Kiyoshi Kobayashi
  role: author
  orcid: https://orcid.org/0000-0001-9644-1879
- name: Takahisa Yamamoto
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: flash sintering
  schema: not_defined
- subject: strontium titanate
  schema: not_defined
- subject: oxygen vacancies
  schema: not_defined
- subject: strontium vacancies
  schema: not_defined
- subject: electron energy-loss spectroscopy
  schema: not_defined

## Rights

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

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## Data origin



## Embargo



## Journal

- title: Journal of the European Ceramic Society
  issn: '09552219'
  volume: '45'
  issue: '15'
  article_number: '117611'

## Conference



## Related item



## Funding

- identifier: JPMJCR1996
  funder_name: Core Research for Evolutional Science and Technology
- funder_name: Ministry of Education, Culture, Sports, Science and Technology
- funder_name: Japan Science and Technology Agency
- identifier: 24K01156
  funder_name: Japan Society for the Promotion of Science

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## Fileset

- id: 4b2bdf8c-f338-4e8f-a833-4cb7a94ecbc6
  filename: Revised_ver2_Inagaki_etal_UNMARKED.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 720423
  md5: d299aa9cd3c65a2498331db72afa9da1

## Thumbnail

fileset_id: 4b2bdf8c-f338-4e8f-a833-4cb7a94ecbc6
filename: Revised_ver2_Inagaki_etal_UNMARKED.docx