Ionic dynamics in the glass-forming liquidCa0.4K0.6(NO3)1.4:A molecular dynamics study with a polarizable model

2001 ◽  
Vol 63 (9) ◽  
Author(s):  
Mauro C. C. Ribeiro
2020 ◽  
Vol 978 ◽  
pp. 436-445
Author(s):  
Mouparna Manna ◽  
Snehanshu Pal

In this present study, molecular dynamics (MD) simulation has been performed to investigate the influence of applied hydrostatic compressive and tensile pressure on glass forming process of Ni62Nb38 bimetallic glass using embedded atom method (EAM). During fast cooling (~10 K ps-1), tensile and compressive pressure has been applied having 0.001 GPa,0.01 GPa and 0.1 GPa magnitude. The glass transition temperature (Tg) for each pressurized (Tensile and Compressive nature) cooling case has been calculated and Tg is found to be dependent on both magnitude and nature of the pressure applied during cooling process.Voronoi cluster analysis has also been carried out to identify the structural evaluation during hydrostatically pressurised fast cooling process. In case of both hydrostatic tensile and compressive pressurised cooling processes, Tgincreases with the increase of pressure from 0.001 GPa to 0.1 GPa in magnitude.


2020 ◽  
Vol 22 (4) ◽  
pp. 2557-2565 ◽  
Author(s):  
Qi-Long Cao ◽  
Pan-Pan Wang ◽  
Duo-Hui Huang

Molecular dynamics simulations of Ni36Zr64, Cu65Zr35 and Ni80Al20 were carried out over a broad range of temperature (900–3000 K) to investigate the Stokes–Einstein (SE) relation for glass-forming melts.


2020 ◽  
Vol 22 (32) ◽  
pp. 17948-17959
Author(s):  
Hubert Hellwig ◽  
Andrzej Nowok ◽  
Jan Grzegorz Małecki ◽  
Piotr Kuś ◽  
Agnieszka Jędrzejowska ◽  
...  

The dielectric properties, glass transition temperature and molecular dynamics of thiacrown ethers are strongly dependent on the thiacrown ring type.


1999 ◽  
Vol 1 (4) ◽  
pp. 519-523 ◽  
Author(s):  
Frank Rittig ◽  
Andreas Huwe ◽  
Gerald Fleischer ◽  
Jörg Kärger ◽  
Friedrich Kremer

1996 ◽  
Vol 455 ◽  
Author(s):  
J. Matsui ◽  
M. Fujisaki ◽  
T. Odagaki

ABSTRACTWe have carried out the molecular dynamics (MD) simulation for a binary soft-sphere system and calculated the self part of the generalized susceptibility χs(q, ω) at various temperatures. At higher temperatures in liquid state, only one peak appears in the imaginary part of Xa, which tends to split into two peaks, the so-called α- and β- peaks, as the temperature is reduced. The temperature dependence of the peak frequency is well described by the Vogel-Fulcher law for the α- peak, and the peak frequency does not change much for the α- peak. We have also measured the trajectory volume of a tagged atom V(t), which is related to the dynamical order parameter, the “generalized capacity”, in structural glass transitions recently proposed by J. F. Douglas. These results show the transition temperature which is in good agreement with that determined by the trapping diffusion model.


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