# Search for a ferroelectric ice under high pressure by dielectric and neutron diffraction measurements using newly developed high-pressure cells

https://mdr.nims.go.jp/datasets/3ee5e84c-7453-48f7-9a21-7c034d9a0443

## Files

- [20250930_slide.pptx](https://mdr.nims.go.jp/filesets/8654e0ca-09f9-457e-b7bc-1d307ddf1e9b/download) ([Detail](https://mdr.nims.go.jp/filesets/8654e0ca-09f9-457e-b7bc-1d307ddf1e9b.md))

## Id

3ee5e84c-7453-48f7-9a21-7c034d9a0443

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-12-24T06:12:47.693071Z

## Updated at

2025-12-24T06:36:31.281946Z

## Published at

2025-12-24T23:19:46.022123Z

## Doi

https://doi.org/10.48505/nims.6064

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## Resource type

conference_presentation

## Manuscript type

na

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## Title

- title: Search for a ferroelectric ice under high pressure by dielectric and neutron
    diffraction measurements using newly developed high-pressure cells
  title_type: original
  lang: en

## Description

- description: To date, more than 20 crystalline and amorphous phases of ice have
    been reported. This extraordinary polymorphism makes ice unique and has inspired
    numerous studies in the broad fields of materials science and Earth and planetary
    science. As a single water molecule (H2O) has an electric dipole moment, ice exhibits
    a relatively high dielectric constant (about 100). Regardless of the number of
    ice polymorphs and their high dielectric constants, no clear evidence of the existence
    of ferroelectric ice (FI) has been reported (there are reports of FI in nano-confined
    waters). Control of the direction of the H2O dipole moment is an attractive subject
    in physical chemistry, and I have searched for a hitherto unknown FI phase under
    high pressure, where many ice polymorphs appear. I have developed three high-pressure
    cells for my aim. I will talk about the details of the developed cells and the
    high-pressure behavior of ice, particularly its hydrogen ordering.
  description_type: abstract
  lang: eng

## Creator

- name: Ryo Yamane
  role: author
  orcid: https://orcid.org/0000-0001-9953-5280
  organization: National Institute for Materials Science
  department: Research Center for Electronic and Optical Materials/Functional Materials
    Field/Environmental Circulation Composite Materials Group

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## Keyword

- subject: 氷の高圧研究
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

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## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: 29th International Conference on High Pressure Science and Technology (AIRAPT-29)
start_date: 2025-09-28
end_date: 2025-10-03
identifier: https://smartconf.jp/content/airapt29/

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## Fileset

- id: 8654e0ca-09f9-457e-b7bc-1d307ddf1e9b
  filename: 20250930_slide.pptx
  content_type: application/vnd.openxmlformats-officedocument.presentationml.presentation
  size: 16293997
  md5: 4c3a6f0323166c93a8ffa5a7c6b8f285

## Thumbnail

fileset_id: 8654e0ca-09f9-457e-b7bc-1d307ddf1e9b
filename: 20250930_slide.pptx