Heat Capacity And Structural Relaxation In Se80-xTe20Agx (x=3 and 9) Glassy Alloys

被引:0
|
作者
Naqvi, S. Faheem [1 ]
Saxena, N. S. [1 ]
机构
[1] Univ Rajasthan, Dept Phys, Semicond & Polymer Sci Lab, Jaipur 302004, Rajasthan, India
来源
OPTICS: PHENOMENA, MATERIALS, DEVICES, AND CHARACTERIZATION: OPTICS 2011: INTERNATIONAL CONFERENCE ON LIGHT | 2011年 / 1391卷
关键词
Enthalpy relaxation; Apparent specific heat; Excess enthalpy; TRANSFORMATIONS; TRANSITION;
D O I
10.1063/1.3643600
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
This paper reports the effects of annealing time and temperature on the thermodynamics of enthalpy relaxation of Se80-xTe20Agx (x=3, 9) glasses. Differential Scanning Calorimetry (DSC) method is optimized for the measurement of enthalpy relaxation in the vicinity of glass transition. The recovery of excess enthalpy (Delta H-excess) has been calculated from the knowledge of excess specific heat (Delta C-p). It is found that excess enthalpy released (Delta H-excess) increase with increase in annealing time (t(a)). From the knowledge of excess specific heat (Delta C-p) and Delta H-excess , it has been found that sub-T-g annealing of glass leads to decrease in enthalpy of the system and thereby taking it to the more equilibrium state.
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页数:3
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