Chin. Phys. Lett.  2009, Vol. 26 Issue (1): 016402    DOI: 10.1088/0256-307X/26/1/016402
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
Configurational Entropy, Diffusivity and Potential Energy Landscape in Liquid Argon
DUAN Yong-Ping, MA Cong-Xiao, LI Jia-Yun, LI Cong, WANG Dan, LI Mei-Li, SUN Min-Hua
Heilongjiang Key Laboratory for Advanced Functional Materials and Excited State Process, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025
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DUAN Yong-Ping, MA Cong-Xiao, LI Jia-Yun et al  2009 Chin. Phys. Lett. 26 016402
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Abstract

The configurational entropy, diffusion coefficient, dynamics and thermodynamics fragility indices of liquid argon are calculated using molecular dynamics simulations at two densities. The relationship between dynamics and thermodynamics properties is studied. The diffusion coefficient depends linearly on configurational entropy, which is consistent with the hypothesis of Adam-Gibbs. The consistence of dynamics and thermodynamics fragility indices demonstrates that dynamical behaviour is governed by thermodynamics behaviour in glass transition of liquid argon.

Keywords: 64.70.Kj      65.40.Gd      66.20.Gd     
Received: 30 May 2008      Published: 24 December 2008
PACS:  64.70.kj (Glasses)  
  65.40.gd (Entropy)  
  66.20.Gd (Diffusive momentum transport)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/1/016402       OR      https://cpl.iphy.ac.cn/Y2009/V26/I1/016402
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DUAN Yong-Ping
MA Cong-Xiao
LI Jia-Yun
LI Cong
WANG Dan
LI Mei-Li
SUN Min-Hua
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