# Synthesis of hyperordered permanently densified silica glasses by hot compression above the glass transition temperature

https://mdr.nims.go.jp/datasets/bf73bd9f-1b2d-4224-aff5-468d3ca1dad3

## File

- [132_24013.pdf](https://mdr.nims.go.jp/filesets/30492ff2-5c45-4a43-afcc-983e3de3ea34/download) ([Detail](https://mdr.nims.go.jp/filesets/30492ff2-5c45-4a43-afcc-983e3de3ea34.md))

## Id

bf73bd9f-1b2d-4224-aff5-468d3ca1dad3

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-08-09T19:39:30.177142Z

## Updated at

2024-08-26T07:30:29.346864Z

## Published at

2024-08-26T07:30:29.443428Z

## Doi



## First published url

https://doi.org/10.2109/jcersj2.24013

## Date published

2024-07-01

## Recorded date published

2024

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Synthesis of hyperordered permanently densified silica glasses by hot compression
    above the glass transition temperature
  title_type: original
  lang: en

## Description

- description: Synthesizing densified glasses with structure ordering is an important
    issue for the development of new optical fibers with high refractive index and
    low dispersion. Herein, we report on our attempt to synthesize densified silica
    (SiO2) glasses by hot compression at a pressure of 7.7 GPa and temperatures above
    1200 °C. We succeeded for the first time in recovering densified SiO2 glasses
    compressed at 7.7 GPa and 1300 °C. Samples compressed above 1300 °C were crystallized
    into coesite by heterogeneous nucleation. The height of the first sharp diffraction
    peak in high-energy X-ray and neutron diffraction data of densified SiO2 glasses
    increased with increasing temperature, indicating the evolution of intermediate-range
    ordering. Furthermore, the density increase of hot-compressed SiO2 glasses was
    estimated by analyzing reduced pair distribution functions. We found that the
    SiO2 glass compressed at 7.7 GPa and 1300 °C is by far the most densified and
    structurally ordered (hyperorderd) glass in the world.
  description_type: abstract
  lang: und

## Creator

- name: Shuya Sato
  role: author
- name: Masashi Miyakawa
  role: author
  orcid: https://orcid.org/0000-0002-0838-8156
  organization: National Institute for Materials Science
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- 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: Kazutaka Ikeda
  role: author
- name: Naoto Kitamura
  role: author
- name: Yasushi Idemoto
  role: author
- name: Shinji Kohara
  role: author
  orcid: https://orcid.org/0000-0001-9596-2680
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: The Ceramic Society of Japan

## Managing organization



## Keyword

- subject: Densified glass
  schema: not_defined
- subject: Hot compression
  schema: not_defined
- subject: Structure
  schema: not_defined
- subject: X-ray diffraction
  schema: not_defined
- subject: Neutron diffraction
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of the Ceramic Society of Japan
  issn: '13486535'
  volume: '132'
  issue: '7'
  start_page: 427
  end_page: 433
  article_number: '24013'

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## Fileset

- id: 30492ff2-5c45-4a43-afcc-983e3de3ea34
  filename: 132_24013.pdf
  content_type: application/pdf
  size: 808784
  md5: 00dd986b38c828e74099154dc0dc2134

## Thumbnail

fileset_id: 30492ff2-5c45-4a43-afcc-983e3de3ea34
filename: 132_24013.pdf