Publication detail

Structural relaxation in Se-rich As-Se glasses

Authors: Svoboda Roman | Málek Jiří

Year: 2013

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: 89-95

Titles:

Language	Name	Abstract	Keywords
cze	Strukturní relaxace v Se-bohatých sklech systému As-Se	Entalpická strukturní relaxace skel AsySe(100-y) byla studována pomocí DSC. Pro analýzu byla vybrána skla s obsahem arsenu 0-15 molárních procent. Získaná data byla fitována TNM modelem.	entalpická relaxace; DSC; TNM mode; As-Se skla
eng	Structural relaxation in Se-rich As-Se glasses	Enthalpic structural relaxation in the AsySe(100-y) glassy system was studied by means of differential scanning calorimetry (DSc). Glasses in the compositional range 0 <= y <= 15 were examined. Based on the curve-fitting results, the description of relaxation behavior was obtained in terms of the Tool-Narayanaswamy-Moynihan model. These results were further confirmed by a novel simulation-comparative non-fitting method. Evolution of TNM parameters with changing arsenic content was interpreted in terms of joint movements of occasionally linked Se polymeric chains continuously transiting towards rather independent positional changes within inter-linked segments or clusters. The interpretation represents a novel approach associating a phenomenological description with factual changes in the molecular structure of the material.	enthalpic relaxation; DSC; TNM model; As-Se glasses

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