Publication detail

The effect of non-linearity contribution to the volume and enthalpy relaxations in amorphous materials

Authors: Málek Jiří | Shánělová Jana

Year: 2002

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: 779-784

Titles:

Language	Name	Abstract	Keywords
cze	Vliv příspěvku nelinearity na objemovou a entalpickou relaxaci amorfních materiálů	Vliv příspěvku nelinearity na objemovou a entalpickou relaxaci amorfních materiálů byl analyzován s využitím Tool - Narayanaswamy - Moynihan modelu. Byla odvozena rovnice vyjadřující rychlost relaxace v závislosti na příspěvku nelinearity, šířky spektra relaxačních časů a velikosti teplotní změny.
eng	The effect of non-linearity contribution to the volume and enthalpy relaxations in amorphous materials	The effect of non-linearity contribution to the relaxation behavior of amorphous materials is analyzed within the Tool-Narayanaswamy-Moynihan (TNM) model. It is shown that the rate of relaxation response to a temperature jump can conveniently be characterized on the basis of the stabilization period and the fictive relaxation rate. A simple equation relating these quantities and parameters of the TNM model is derived. This equation separates the contribution of non-exponentiality and non-linearity. It has been tested for polyvinylacetate and As2S3 relaxation data. Within the limits of experimental error it seems that volume and enthalpy relaxations in these materials exhibit a similar response that can be well correlated with previously published TNM parameters.	Inorganic compounds;Theoretical study;Arsenic sulfides;Amorphous state;Volume;Non linear effect;Enthalpy;Structure relaxation;

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