TITLE

Generic features of the primary relaxation in glass-forming materials (Review Article)

AUTHOR(S)
Kokshenev, Valery B.
PUB. DATE
August 2017
SOURCE
Low Temperature Physics;Aug2017, Vol. 43 Issue 8, p942
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We discuss structural relaxation in molecular and polymeric supercooled liquids, metallic alloys and orientational glass crystals. The study stresses especially the relationships between observables raised from underlying constraints imposed on degrees of freedom of vitrification systems. A selfconsistent parametrization of the a-timescale on macroscopic level results in the material-andmodel independent universal equation, relating three fundamental temperatures, characteristic of the primary relaxation, that is numerically proven in all studied glass formers. During the primary relaxation, the corresponding small and large mesoscopic clusters modify their size and structure in a self-similar way, regardless of underlying microscopic realizations. We show that cluster-shape similarity, instead of cluster-size fictive divergence, gives rise to universal features observed in primary relaxation. In all glass formers with structural disorder, including orientational-glass materials (with the exception of plastic crystals), structural relaxation is shown to be driven by local random fields. Within the dynamic stochastic approach, the universal subdiffusive dynamics corresponds to random walks on small and large fractals.
ACCESSION #
125543757

 

Related Articles

  • Large supercooled liquid region and phase separation in the Zr-Ti-Ni-Cu-Be bulk metallic glasses. Hays, C.C.; Kim, C.P.; Johnson, W.L. // Applied Physics Letters;8/23/1999, Vol. 75 Issue 8, p1089 

    Analyzes results of calorimetric, differential thermal analysis and structural measurements for a series of bulk metallic glass forming compositions in the Zr-Ti-Cu-Ni-Be alloy system. Transition from phase separating to nonphase separating compositions; Supercooled liquid regions exhibited by...

  • Dynamic phase coexistence in glass-forming liquids. Pastore, Raffaele; Coniglio, Antonio; Ciamarra, Massimo Pica // Scientific Reports;7/10/2015, p11770 

    One of the most controversial hypotheses for explaining the heterogeneous dynamics of glasses postulates the temporary coexistence of two phases characterized by a high and by a low diffusivity. In this scenario, two phases with different diffusivities coexist for a time of the order of the...

  • Undercooled liquid-to-glass transition during continuous cooling in Pd-Cu-Ni-P alloys. Nishiyama, N.; Horino, M.; Haruyama, O.; Inoue, A. // Applied Physics Letters;6/26/2000, Vol. 76 Issue 26 

    The glass-transition behavior from the supercooled liquid of a Pd[sub 40]Cu[sub 30]Ni[sub 10]P[sub 20] alloy was investigated by employing a power-compensated differential scanning calorimetry under continuous cooling. At cooling rates of 0.83, 1.17, and 1.67 K/s, the transition was clearly...

  • Dendrite growth kinetics of βZr phase within highly undercooled liquid Zr-Si hypoeutectic alloys under electrostatic levitation condition. Hu, L.; Yang, S. J.; Wang, L.; Zhai, W.; Wei, B. // Applied Physics Letters;4/17/2017, Vol. 110 Issue 16, p1 

    The liquid Zr100-xSix (x = 1, 3, and 5) alloys were substantially undercooled by up to 392 K (0.19TL), 423 K (0.21TL), and 451 K (0.23TL), respectively, under the electrostatic levitation condition. The measured dendrite growth velocity of the primary βZr phase increased with the enhancement...

  • Synergistic Effect of Soda-Lime-Silica Glass and Porcelain Scrap on the Vitrification Behavior of Porcelanized Stoneware Tile. Oluseyi, A. K.; Das, S. K. // Interceram: International Ceramic Review;Jul/Aug2014, Vol. 63 Issue 4, p193 

    Porcelain scrap, a by-product from the table ware industry, was gradually added to a soda-lime-silica scrap-glass-containing traditional porcelanized stoneware tile body replacing sand. The effect of this addition on the vitrification and physico-mechanical properties was studied by measuring...

  • Glass formation in a (Ti,Zr,Hf)-(Cu,Ni,Ag)-Al high-order alloy system by mechanical alloying. Zhang, L.C.; Shen, Z.Q.; Xu, J. // Journal of Materials Research;Sep2003, Vol. 18 Issue 9, p2141 

    Presents a study which investigated glass formation in a (Ti,Zr,Hf)-(Cu,Ni,Ag)-Al high-order alloy system by mechanical alloying. Structural features of the alloy system; Observations on the behavior of the high-order alloy upon completion of the primary nanocrystallization; Usual methods in...

  • Fe-based soft magnetic amorphous alloys with a wide supercooled liquid region. Makino, A.; Koshiba, H. // Journal of Applied Physics;4/15/1999 Part 2A of 2, Vol. 85 Issue 8, p5136 

    Presents information on a study which examined the glass transition and supercooled liquid region in the temperature range before crystallization in iron...cobalt...nickel...hafnium...niobium...tantalum...boron alloys. Experimental procedure; Results and discussion; Conclusions.

  • Deformation of inherent structures to detect long-range correlations in supercooled liquids. Mosayebi, Majid; Del Gado, Emanuela; Ilg, Patrick; Öttinger, Hans Christian // Journal of Chemical Physics;7/14/2012, Vol. 137 Issue 2, p024504 

    We propose deformations of inherent structures as a suitable tool for detecting structural changes underlying the onset of cooperativity in supercooled liquids. The non-affine displacement (NAD) field resulting from the applied deformation shows characteristic differences between the high...

  • Structural correlations and cooperative dynamics in supercooled liquids. Singh, Murari; Agarwal, Manish; Dhabal, Debdas; Chakravarty, Charusita // Journal of Chemical Physics;7/14/2012, Vol. 137 Issue 2, p024508 

    The relationships between diffusivity and the excess, pair and residual multiparticle contributions to the entropy are examined for Lennard-Jones liquids and binary glassformers, in the context of approximate inverse power law mappings of simple liquids. In the dense liquid where diffusivities...

  • Note: Microsecond long atomistic simulation of supercooled water. Shevchuk, Roman; Rao, Francesco // Journal of Chemical Physics;7/21/2012, Vol. 137 Issue 3, p036101 

    A 3 μs long molecular dynamics simulation of the TIP4P-Ew water model is presented to investigate the relaxation properties of an atomistic model in the supercooled region below the temperature of homogeneous nucleation. This is an effort towards a better understanding of the equilibrium...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics