Ring compaction as a mechanism of densification in amorphous silica

Philip S. Salmon; Anita Zeidler; Motoki Shiga; Yohei Onodeira; Shinji Kohara

doi:10.1103/PhysRevB.107.144203

Ring compaction as a mechanism of densification in amorphous silica

Philip S. Salmon, Anita Zeidler, Motoki Shiga, Yohei Onodeira, Shinji Kohara

Research output: Contribution to journal › Article › peer-review

6 Citations (SciVal)

Abstract

The structure of permanently densified silica glass is investigated by neutron and x-ray diffraction, and by the production of atomistic models that reproduce the diffraction results. The focus is on the nature of the ordering on an intermediate length scale that originates from the formation of
n
-rings, where
n
is the number of Si or O atoms within a ring. The densification process has a large effect on this ordering, as identified by pronounced changes to the first sharp diffraction peak (FSDP) in the measured structure factors. A clear and systematic dependence of the distribution of ring sizes on the position and shape of the FSDP could not be found, i.e., the ring statistics are not directly encoded into the form of this peak. Instead, a significant contribution to the glass densification originates from compaction of the n-rings, a metric that is quantified by the radius of gyration and lifetime of the rings. We thereby uncover and quantify a key densification mechanism in amorphous materials.

Original language	English
Article number	144203
Journal	Physical Review B : Condensed Matter and Materials Physics
Volume	107
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.107.144203
Publication status	Published - 1 Apr 2023

Bibliographical note

Funding Information:
A.Z. was supported by a Royal Society–EPSRC Dorothy Hodgkin Research Fellowship. This research was also supported by the TIA collaborative research program “Kakehashi,” Grant No. TK19-004 (to S.K.), and JSPS KAKENHI Grants No. 20H05878 (to M.S. and S.K.), No. 20H05881 (to S.K. and Y.O.), No. 20H05884 (to M.S.), No. 20H04241 (to S.K., M.S., and Y.O.), and No. 19K05648 (to Y.O.).

Access to Document

10.1103/PhysRevB.107.144203Licence: CC BY

Cite this

@article{ad9db4c58842466c964cdcd01f1b6666,

title = "Ring compaction as a mechanism of densification in amorphous silica",

abstract = "The structure of permanently densified silica glass is investigated by neutron and x-ray diffraction, and by the production of atomistic models that reproduce the diffraction results. The focus is on the nature of the ordering on an intermediate length scale that originates from the formation of n-rings, where n is the number of Si or O atoms within a ring. The densification process has a large effect on this ordering, as identified by pronounced changes to the first sharp diffraction peak (FSDP) in the measured structure factors. A clear and systematic dependence of the distribution of ring sizes on the position and shape of the FSDP could not be found, i.e., the ring statistics are not directly encoded into the form of this peak. Instead, a significant contribution to the glass densification originates from compaction of the n-rings, a metric that is quantified by the radius of gyration and lifetime of the rings. We thereby uncover and quantify a key densification mechanism in amorphous materials.",

author = "Salmon, {Philip S.} and Anita Zeidler and Motoki Shiga and Yohei Onodeira and Shinji Kohara",

note = "Funding Information: A.Z. was supported by a Royal Society–EPSRC Dorothy Hodgkin Research Fellowship. This research was also supported by the TIA collaborative research program “Kakehashi,” Grant No. TK19-004 (to S.K.), and JSPS KAKENHI Grants No. 20H05878 (to M.S. and S.K.), No. 20H05881 (to S.K. and Y.O.), No. 20H05884 (to M.S.), No. 20H04241 (to S.K., M.S., and Y.O.), and No. 19K05648 (to Y.O.). ",

year = "2023",

month = apr,

day = "1",

doi = "10.1103/PhysRevB.107.144203",

language = "English",

volume = "107",

journal = "Physical Review B : Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "14",

}

TY - JOUR

T1 - Ring compaction as a mechanism of densification in amorphous silica

AU - Salmon, Philip S.

AU - Zeidler, Anita

AU - Shiga, Motoki

AU - Onodeira, Yohei

AU - Kohara, Shinji

N1 - Funding Information: A.Z. was supported by a Royal Society–EPSRC Dorothy Hodgkin Research Fellowship. This research was also supported by the TIA collaborative research program “Kakehashi,” Grant No. TK19-004 (to S.K.), and JSPS KAKENHI Grants No. 20H05878 (to M.S. and S.K.), No. 20H05881 (to S.K. and Y.O.), No. 20H05884 (to M.S.), No. 20H04241 (to S.K., M.S., and Y.O.), and No. 19K05648 (to Y.O.).

PY - 2023/4/1

Y1 - 2023/4/1

N2 - The structure of permanently densified silica glass is investigated by neutron and x-ray diffraction, and by the production of atomistic models that reproduce the diffraction results. The focus is on the nature of the ordering on an intermediate length scale that originates from the formation of n-rings, where n is the number of Si or O atoms within a ring. The densification process has a large effect on this ordering, as identified by pronounced changes to the first sharp diffraction peak (FSDP) in the measured structure factors. A clear and systematic dependence of the distribution of ring sizes on the position and shape of the FSDP could not be found, i.e., the ring statistics are not directly encoded into the form of this peak. Instead, a significant contribution to the glass densification originates from compaction of the n-rings, a metric that is quantified by the radius of gyration and lifetime of the rings. We thereby uncover and quantify a key densification mechanism in amorphous materials.

AB - The structure of permanently densified silica glass is investigated by neutron and x-ray diffraction, and by the production of atomistic models that reproduce the diffraction results. The focus is on the nature of the ordering on an intermediate length scale that originates from the formation of n-rings, where n is the number of Si or O atoms within a ring. The densification process has a large effect on this ordering, as identified by pronounced changes to the first sharp diffraction peak (FSDP) in the measured structure factors. A clear and systematic dependence of the distribution of ring sizes on the position and shape of the FSDP could not be found, i.e., the ring statistics are not directly encoded into the form of this peak. Instead, a significant contribution to the glass densification originates from compaction of the n-rings, a metric that is quantified by the radius of gyration and lifetime of the rings. We thereby uncover and quantify a key densification mechanism in amorphous materials.

UR - http://www.scopus.com/inward/record.url?scp=85158916456&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.107.144203

DO - 10.1103/PhysRevB.107.144203

M3 - Article

SN - 1098-0121

VL - 107

JO - Physical Review B : Condensed Matter and Materials Physics

JF - Physical Review B : Condensed Matter and Materials Physics

IS - 14

M1 - 144203

ER -

Ring compaction as a mechanism of densification in amorphous silica

Abstract

Bibliographical note

Access to Document

Other files and links

Fingerprint

Data sets for article entitled "Ring compaction as a mechanism of densification in amorphous silica"

Cite this

Ring compaction as a mechanism of densification in amorphous silica

Abstract

Bibliographical note

Access to Document

Other files and links

Fingerprint

Datasets

Data sets for article entitled "Ring compaction as a mechanism of densification in amorphous silica"

Cite this