Temperature Dependence of Relaxation Time in Adam-Gibbs Model of Glass-Forming Liquids: Fluctuation Effects

2008 ◽  
Author(s):  
Udayan Mohanty ◽  
Albert Co ◽  
Gary L. Leal ◽  
Ralph H. Colby ◽  
A. Jeffrey Giacomin
Keyword(s):  
Relaxation Time ◽  
Temperature Dependence ◽  
Glass Forming ◽  
Gibbs Model ◽  
Fluctuation Effects

Thermodynamic and kinetic fragilities of Mg-based bulk metallic glass-forming liquids

2008 ◽  
Vol 23 (10) ◽  
pp. 2816-2820 ◽  
Author(s):  
H. Ma ◽  
H-J. Fecht
Keyword(s):  
Relaxation Time ◽  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Metallic Glass ◽  
Temperature Dependence ◽  
Bulk Metallic Glass ◽  
Excess Entropy ◽  
Gibbs Equation ◽  
Glass Forming

The thermodynamic and kinetic fragilities of two near-eutectic Mg-based bulk metallic glass (BMG)-forming liquids, Mg61Cu28Gd11 and Mg59.5Cu22.9Ag6.6Gd11, were investigated using high-precision differential scanning calorimeter (DSC). The thermodynamic fragility denoted as F3/4 was determined by evaluating the temperature dependence of the excess entropy Sex. The heating rate dependence of the relaxation time at the glass transition temperature was investigated to measure the kinetic fragility. A positive correlation between the thermodynamic and kinetic fragilities could be established in Mg-based BMG-forming liquids on the basis of Adam-Gibbs equation in contrast to a number of other BMGs.

Measurement scheme to detect α relaxation time of glass-forming liquid

2019 ◽  
Vol 28 (8) ◽  
pp. 086601
Author(s):  
Xing-Yu Zhao ◽  
Li-Na Wang ◽  
Hong-Mei Yin ◽  
Heng-Wei Zhou ◽  
Yi-Neng Huang
Keyword(s):  
Relaxation Time ◽  
Glass Forming ◽  
Measurement Scheme

Temperature dependence of the rotational relaxation time in nitrogen

1994 ◽  
Vol 231 (4-6) ◽  
pp. 444-448 ◽  
Author(s):  
Andrey E. Belikov ◽  
Ravel G. Sharafutdinov ◽  
Mikhail L. Strekalov
Keyword(s):  
Relaxation Time ◽  
Temperature Dependence ◽  
Rotational Relaxation ◽  
Rotational Relaxation Time
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