Publication detail

Relaxation in Ge2Se98 and As2Se98 glasses

Authors: Svoboda Roman | Honcová Pavla | Málek Jiří

Year: 2010

Type of publication: článek v odborném periodiku

Name of source: Journal of Non-Crystalline Solids

Publisher name: Elsevier Science BV

Place: Amsterdam

Page from-to: 447-455

Titles:

Language	Name	Abstract	Keywords
cze	Relaxace v Ge2Se98 a As2Se98 sklech	Strukturní relaxace skel Ge2Se98 a As2Se98 byla studována pomocí rtuťové dilatometrie a diferenciální skenovací kalorimetrie. K fitování experimentálních dat byl použit model TNM. Pro všechna zpracovaná měření byla nalezena jednotná sada parametrů TNM modelu.Dále byla porovnána měření strukturní relaxace metodou rtuťové dilatometrie a metodou diferenciální skenovací kalorimetrie.	strukturní relaxace; DSC; Ge-Se; As-Se; sklo; aktivační energie
eng	Relaxation in Ge2Se98 and As2Se98 glasses	Mercury dilatometry and differential scanning calorimetry were used to study structural relaxation of Ge2Se98 and As2Se98 glasses. Tool-Narayanaswamy-Moynihan model was used to fit the experimental data. Single set of volume and enthalpy relaxation parameters describing all performed measurements was determined for each studied glass. Volumetric and enthalpic TNM parameters were for both glasses compared with each other as well as with values for amorphous selenium determined earlier. The comparison of the apparent activation energy of structural relaxation with the activation energy of viscous flow was made for accessible low-metal-content data in GexSe1-x and AsxSe1-x systems. Moreover, several non-fitting methods of TNM parameters estimation were applied to our data. A good agreement with curve-fitting results was achieved for most methods which consists with our previous results on amorphous selenium and polyvinyl acetate.	structural relaxation; DSC; Ge-Se; As-Se; glass; activation energy

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