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Entropy-stabilized oxides with medium configurational entropy
Ceramics International, 2021Abstract Medium-entropy oxides, ((Mg1/3Co1/3Ni1/3)1-xZnx)O with x between 0.292 and 0.388, were synthesized by sintering the corresponding powder mixtures and proven to be entropy stabilized. The enthalpy of mixing of these oxides was estimated from their critical formation temperatures.
Kepi Chen +4 more
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A universal configurational entropy metric for high-entropy materials
Scripta Materialia, 2021 Abstract In recent years, high-entropy materials have become increasingly complex, outgrowing simple solid-solution based calculations of configurational entropy, and with that, the previously established metrics for high-, medium-, and low-entropy.
Olivia F Dippo, Kenneth S Vecchio
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Maximum entropy Tokamak configurations
Plasma Physics and Controlled Fusion, 1990The new entropy concept for the collective magnetic equilibria developed in preceding papers is applied to the description of the states of a Tokamak subjected to Ohmic and auxiliary heating. The condition of existence of steady-state plasmas with vanishing entropy production implies, on the one hand, the resilience of specific current density profiles
E Minardi, G Lampis
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Configurational Entropy in Thermoset Polymers
The Journal of Physical Chemistry B, 2015The configurational entropy describes the atomic structure in a material and controls several material properties. Often the configurational entropy is determined through dielectric or calorimetric measurements where the difference between the entropies of the crystalline state and the amorphous state is determined.
Jensen, Martin, Jakobsen, Johnny
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CONFIGURATIONAL ENTROPY IN OCTAGONAL TILING MODELS
International Journal of Modern Physics B, 1993We calculate the configurational entropy of random tilings obtained by elementary flips from a perfect octagonal tiling with an octagonal boundary. We map the problem of generating all configurations onto a partition problem. We calculate numerically the number of configurations and the associated entropy.
Mosseri, Rémy, Bailly, Francis
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Modelling configurational entropy of silicate melts
Chemical Geology, 2017Abstract The Adam-Gibbs theory provides a robust connection between the transport or relaxation properties of melts and their thermochemical properties. In its expanded form: log η = A + B T S c Tg + C p c ln T T g the equation has adjustable unknown parameters A, B and Sc ( Tg ) which can be ...
J.K. Russell, D. Giordano
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Configurational Entropy Revisited
Journal of Chemical Education, 2007Entropy change is categorized in some prominent general chemistry textbooks as being either positional (configurational) or thermal. In those texts, the accompanying emphasis on the dispersal of matter independent of energy considerations and thus in discord with kinetic molecular theory is most troubling.
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Structural complexity and configurational entropy of crystals
Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 2016Using a statistical approach, it is demonstrated that the complexity of a crystal structure measured as the Shannon information per atom [Krivovichev (2012).Acta Cryst.A68, 393–398] represents a negative contribution to the configurational entropy of a crystalline solid.
Sergey V Krivovichev
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The configurational entropy of glass
Journal of Non-Crystalline Solids, 2009Abstract Configurational entropy is of fundamental importance to understanding the universal nature of the glassy state. According to the conventional view, the configurational entropy of a liquid is ‘frozen’ below the glass transition temperature ( T g ) all the way to absolute zero.
Prabhat K. Gupta, John C. Mauro
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