Initial stage of physical ageing in network glasses
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F12%3A39895961" target="_blank" >RIV/00216275:25310/12:39895961 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1080/14786435.2012.704428" target="_blank" >http://dx.doi.org/10.1080/14786435.2012.704428</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/14786435.2012.704428" target="_blank" >10.1080/14786435.2012.704428</a>
Alternative languages
Result language
angličtina
Original language name
Initial stage of physical ageing in network glasses
Original language description
An atomistic view on Johari-Goldstein secondary beta-relaxation processes responsible for structural relaxation far below the glass transition temperature (T-g) in network glasses is developed for the archetypal chalcogenide glass, As20Se80, using positron annihilation lifetime, differential scanning calorimetry, Raman scattering and nuclear magnetic resonance techniques. Increased density fluctuations are shown to be responsible for the initial stage of physical ageing in these materials at the temperatures below T-g. They are correlated with changes in thermodynamic parameters of structural relaxation through the glass-to-supercooled liquid transition interval. General shrinkage, occurred during the next stage of physical ageing, is shown to be determined by the ability of system to release these redundant open volumes from the glass bulk through the densification process of glass network.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP204%2F11%2F0832" target="_blank" >GAP204/11/0832: Fabrication of optical elements based on micro- and nanostructuring of chalcogenide layers</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Philosophical Magazine
ISSN
1478-6435
e-ISSN
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Volume of the periodical
92
Issue of the periodical within the volume
33
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
4182-4193
UT code for WoS article
000310854700009
EID of the result in the Scopus database
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