Electrical conductivity of Cu,(As0.4Se0.3Te0.3)100-x Glasses

Giridhar, A and Mahadevan, Sudha (1999) Electrical conductivity of Cu,(As0.4Se0.3Te0.3)100-x Glasses. Technical Report. National Aerospace Laboratories, Bangalore,India.

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    Results of the d. c. electrical conductivity (6) measurements (from 90 to 420K) on13; fifteen glass compositions, represented as Cu,(As0 .4Se0 3Te0_3)100-x (with x varying13; from 0 to 30) are reported and discussed. Similar to that observed [I] in the13; composition dependencies of the mean atomic volume (V) and the glass transition13; temperature (T8) of these glasses, it is possible to delineate three regions in the13; composition dependence of the 6 of these glasses. (i) For addition of Cu up to 113; at.%., the cr register a decrease compared to that of the parent AsO.4Se0_3Te0 3 glass.13; (ii) For Cu gt; 1 at.%., the conductivity activation energy (AE) and the preexponential13; factor (C) decrease, with a concomitant increase in 6 (at 250K) by13; about six orders magnitude. (iii) Both AF and C show saturation for Cu gt; 23 at.%.13; The composition data are examined using the model developed earlier [I ] to13; understand the V ( and Tr ) - composition dependencies of these glasses.

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Glasses;Metallic additives;Electrical conductivity Abstract
    Subjects: CHEMISTRY AND MATERIALS > Composite Materials
    Division/Department: Materials Science Division, Materials Science Division
    Depositing User: Mrs Manoranjitha M D
    Date Deposited: 05 May 2006
    Last Modified: 24 May 2010 09:41
    URI: http://nal-ir.nal.res.in/id/eprint/1252

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