Pressure-induced structural changes in titanophosphate glasses studied by neutron and X-ray total scattering analyses

Ying Shi, Nadja T. Lonnroth, Randall E. Youngman, Sylwester J. Rzoska, Michal Bockowski, Morten Mattrup Smedskjær

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

3 Citationer (Scopus)

Resumé

In this paper, the densification mechanism of two titanophosphate glasses (binary 73TiO 2-27P 2O 5 and ternary 68TiO 2-5Al 2O 3-27P 2O 5) is investigated. The glasses are densified by isostatic N 2-mediated pressure treatment at elevated temperature and the pressure-induced structural changes are studied by neutron and X-ray total scattering analyses. The medium range structure change is revealed from the change in the first sharp diffraction peak (FSDP), where the density increase by pressurization is correlated with the decreased medium range repeating spacing calculated from the position of FSDP. The hot compression treatment also increases the medium range order, as shown by the increased correlation length calculated from the width of FSDP. The short range structure changes are examined by separating P–O and Ti–O pair distribution functions (PDF) using differential neutron and X-ray PDFs. Pressurization is also found to increase the coordination number of Ti, as previously observed for other network formers in densified glasses.

OriginalsprogEngelsk
TidsskriftJournal of Non-Crystalline Solids
Vol/bind483
Sider (fra-til)50-59
Antal sider10
ISSN0022-3093
DOI
StatusUdgivet - 1 mar. 2018

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Neutrons
Pressurization
Diffraction
Scattering
neutrons
X rays
Glass
glass
scattering
diffraction
x rays
Hot pressing
densification
Densification
coordination number
Distribution functions
distribution functions
spacing
Temperature
temperature

Citer dette

Shi, Ying ; Lonnroth, Nadja T. ; Youngman, Randall E. ; Rzoska, Sylwester J. ; Bockowski, Michal ; Smedskjær, Morten Mattrup. / Pressure-induced structural changes in titanophosphate glasses studied by neutron and X-ray total scattering analyses. I: Journal of Non-Crystalline Solids. 2018 ; Bind 483. s. 50-59.
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title = "Pressure-induced structural changes in titanophosphate glasses studied by neutron and X-ray total scattering analyses",
abstract = "In this paper, the densification mechanism of two titanophosphate glasses (binary 73TiO 2-27P 2O 5 and ternary 68TiO 2-5Al 2O 3-27P 2O 5) is investigated. The glasses are densified by isostatic N 2-mediated pressure treatment at elevated temperature and the pressure-induced structural changes are studied by neutron and X-ray total scattering analyses. The medium range structure change is revealed from the change in the first sharp diffraction peak (FSDP), where the density increase by pressurization is correlated with the decreased medium range repeating spacing calculated from the position of FSDP. The hot compression treatment also increases the medium range order, as shown by the increased correlation length calculated from the width of FSDP. The short range structure changes are examined by separating P–O and Ti–O pair distribution functions (PDF) using differential neutron and X-ray PDFs. Pressurization is also found to increase the coordination number of Ti, as previously observed for other network formers in densified glasses.",
author = "Ying Shi and Lonnroth, {Nadja T.} and Youngman, {Randall E.} and Rzoska, {Sylwester J.} and Michal Bockowski and Smedskj{\ae}r, {Morten Mattrup}",
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Pressure-induced structural changes in titanophosphate glasses studied by neutron and X-ray total scattering analyses. / Shi, Ying; Lonnroth, Nadja T.; Youngman, Randall E.; Rzoska, Sylwester J.; Bockowski, Michal; Smedskjær, Morten Mattrup.

I: Journal of Non-Crystalline Solids, Bind 483, 01.03.2018, s. 50-59.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Pressure-induced structural changes in titanophosphate glasses studied by neutron and X-ray total scattering analyses

AU - Shi, Ying

AU - Lonnroth, Nadja T.

AU - Youngman, Randall E.

AU - Rzoska, Sylwester J.

AU - Bockowski, Michal

AU - Smedskjær, Morten Mattrup

PY - 2018/3/1

Y1 - 2018/3/1

N2 - In this paper, the densification mechanism of two titanophosphate glasses (binary 73TiO 2-27P 2O 5 and ternary 68TiO 2-5Al 2O 3-27P 2O 5) is investigated. The glasses are densified by isostatic N 2-mediated pressure treatment at elevated temperature and the pressure-induced structural changes are studied by neutron and X-ray total scattering analyses. The medium range structure change is revealed from the change in the first sharp diffraction peak (FSDP), where the density increase by pressurization is correlated with the decreased medium range repeating spacing calculated from the position of FSDP. The hot compression treatment also increases the medium range order, as shown by the increased correlation length calculated from the width of FSDP. The short range structure changes are examined by separating P–O and Ti–O pair distribution functions (PDF) using differential neutron and X-ray PDFs. Pressurization is also found to increase the coordination number of Ti, as previously observed for other network formers in densified glasses.

AB - In this paper, the densification mechanism of two titanophosphate glasses (binary 73TiO 2-27P 2O 5 and ternary 68TiO 2-5Al 2O 3-27P 2O 5) is investigated. The glasses are densified by isostatic N 2-mediated pressure treatment at elevated temperature and the pressure-induced structural changes are studied by neutron and X-ray total scattering analyses. The medium range structure change is revealed from the change in the first sharp diffraction peak (FSDP), where the density increase by pressurization is correlated with the decreased medium range repeating spacing calculated from the position of FSDP. The hot compression treatment also increases the medium range order, as shown by the increased correlation length calculated from the width of FSDP. The short range structure changes are examined by separating P–O and Ti–O pair distribution functions (PDF) using differential neutron and X-ray PDFs. Pressurization is also found to increase the coordination number of Ti, as previously observed for other network formers in densified glasses.

U2 - 10.1016/j.jnoncrysol.2017.12.055

DO - 10.1016/j.jnoncrysol.2017.12.055

M3 - Journal article

VL - 483

SP - 50

EP - 59

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

SN - 0022-3093

ER -