Results 271 to 280 of about 291,825 (313)

The nature of the colloidal ‘glass’ transition

Faraday Discussions, 2002
The dynamically arrested state of matter is discussed in the context of athermal systems, such as the hard sphere colloidal arrest. We believe that the singular dynamical behaviour near arrest expressed, for example, in how the diffusion constant vanishes may be 'universal', in a sense to be discussed in the paper.
DAWSON K. A, LAWLOR A, DE GREGORIO, PAOLO MARIO, MCCULLAGH G. D, ZACCARELLI E, FOFFI G, TARTAGLIA P.   +6 more
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Phase transitions and glass transition in a hyperquenched silica‐alumina glass

Journal of the American Ceramic Society, 2017
Abstract We investigate phase transitions, glass transition, and dynamic behavior in the hyperquenched 69SiO 2 –31Al 2 O 3 (mol%) glass ( SA glass).
Yanfei Zhang, Donghui Zhao, Yuanzheng Yue   +2 more
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FRACTALS IN THE GLASS TRANSITION

Fractals, 1996
The static and fractal properties of the frustrated percolation model are investigated. This model, which contains frustration as an essential ingredient, displays glassy behavior at high density or low temperature and exhibits two transitions: a percolation transition at a temperature Tp with critical exponents of the ferromagnetic s=1/2 state Potts ...
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Glass Transition in Chalcogenide Glasses

Japanese Journal of Applied Physics, 1971
Introduction of arsenic to amorphous selenium and selenium-tellurium systems as well as amorphous sulfur and sulfur-tellurium is found to produce increase of the glass transition temperature T g .
Kazuo Arai, Shogo Saito
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The glass transition of atomic glasses

The Journal of Chemical Physics, 1978
The nature of the glass transition in liquids composed of monatomic species is discussed using a hard sphere model. Recent molecular dynamics calculations by Woodcock [J. Chem. Soc. Faraday II 72, 1667 (1976)] indicate that a hard sphere fluid undergoes a glass transition when it is compressed to a high enough density.
Suzanne Hudson, Hans C. Andersen
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Percolation Transition in Spin Glasses

Europhysics Letters (EPL), 1991
The percolation properties of geometrical clusters related to spin fluctuations have been investigated for the 3d ± J Ising spin glass. The percolation transition is found at a temperature Tp 3.92, far from the spin glass critical temperature. The critical exponents are consistent with the random percolation exponents.
DE ARCANGELIS, Lucilla, CONIGLIO A., PERUGGI F.   +2 more
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Strong-Superstrong Transition in Glass Transition of Metallic Glass

Chinese Physics Letters, 2010
Dynamic fragility of bulk metallic glass (BMG) of Zr64Cu16Ni10Al10 alloy is studied by three-point beam bending methods. The fragility parameter mfor Zr64Cu16Ni10Al10 BMG is calculated to be 24.5 at high temperature, which means that the liquid is a "strong" liquid, while to be 13.4 at low temperature which means that the liquid is a "super-strong ...
Wang Dan, Peng Hong-Yan, Xu Xiao-Yu, Chen Bao-Ling, Wu Chun-Lei, Sun Min-Hua   +5 more
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Glass transition of covalent glasses

Solid State Communications, 1985
Abstract The glass transition temperature Tg of various glasses has been studied in light of their bonding structures. An empirical relationship, 1n Tg≅ 1.6Z + 2.3, where Z expresses the average coordination number is retained for the glasses consisting of covalent molecules held together by van der Waals forces.
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The glass transition in orientational glasses

AIP Conference Proceedings, 1992
It has been possible to account for the temperature and frequency dependence of the dielectric and quadrupolar relaxations in KBr1−xKCNx, and the temperature dependence of Tl in glassy solid Hydrogen with a hierarchically constrained relaxation model.
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Glass Transition and Glass Dynamics

2014
The transition from an undercooled liquid towards a glass (glass transition) is introduced and discussed in terms of mode-coupling theory. It is demonstrated that mode-coupling theory leads to a two-step relaxation scenario near the transition with time-critical exponents, which characterize the two relaxation steps (beta and alpha relaxation).
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