Publikace detail

Structural relaxation in Se-rich As-Se glasses

Autoři: Svoboda Roman | Málek Jiří

Rok: 2013

Druh publikace: článek v odborném periodiku

Název zdroje: Journal of Non-Crystalline Solids

Název nakladatele: Elsevier Science BV

Místo vydání: Amsterdam

Strana od-do: 89-95

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
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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