A unified model of physical ageing in chalcogenide glasses.

Shpotyuk, O. I.; Golovchak, R. Y.; Kozdras, A.; Szymura, S.

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Tytuł artykułu

A unified model of physical ageing in chalcogenide glasses.

Autorzy

Shpotyuk O. I. , Golovchak R. Y. , Kozdras A. , Szymura S.

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Warianty tytułu

Języki publikacji

Abstrakty

Physical ageing processes in As(Ge)-Se glasses are analyzed using the chains crossing model and the constraints theory. It is shown that short-term physical ageing in these materials is fully determined by elementary relaxation acts of inner Se atoms within Se chains leading to the straightening of the latter with further shrinkage of glass matrix. Long term physical ageing is associated with pure shrinkage of under-constrained glass network. Phenomenological model of physical ageing in As(Ge)-Se glasses is developed to explain its compositional behaviour. The main statements of the model are verified by differential scanning calorimetry for chalcogenide glasses of As-Se family.

Słowa kluczowe

model of physical ageing physical ageing chalcogenide glasses As(Ge)-Se glasses shrinkage calorimetry

model fizycznego starzenia starzenie fizyczne szkła chalkogenidkowe szkła As(Ge)-Se kurczliwość kalorymetria

Wydawca

Komitet Nauki o Materiałach PAN

Czasopismo

Archives of Materials Science

Rocznik

2006

Tom

Vol. 27, nr 4

Strony

143--158

Opis fizyczny

Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Shpotyuk O. I.

autor

Golovchak R. Y.

autor

Kozdras A.

autor

Szymura S.

Lviv Scientific Research Institute of Materials of SRC "Carat", Stryjska 202, Lviv, UA-79031, Ukraine

Bibliografia

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Bibliografia

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bwmeta1.element.baztech-article-BOS5-0017-0056