2 Matching Results

Search Results

Advanced search parameters have been applied.

Cluster-Variation Method for the Triangular Lattice Gas [Part] 1. Three-Sublattice Point Approximation

Description: The triangular lattice gas is examined as a model for the ordering of Li{sup +} ions in intercalated transition metal dichalcogenides. A three-sublattice Bragg~ Williams (point approximation) calculation illustrates the meaning of the features in the incremental capacity versus concentration curves: (a) minima are associated with ordered structures, (b) sharp maxima (divergences) are caused by the coexistence of ordered and disordered phases over small concentration intervals and (c) smooth maxima can be found at concentrations of no direct relevance to ordering.
Date: August 1, 1980
Creator: Osorio, R. & Falicov, L. M.
Partner: UNT Libraries Government Documents Department

Cluster-Variation Method for the Triangular Lattice Gas [Part] 2. Triangle Approximation

Description: A triangular lattice gas with nearest~neighbor repulsions and three-particle attractions is examined in a three-sublattice triangle approximation as a model for lithium intercalation in the transition metals dichalcogenides. Order-disorder phase diagrams and thermodynamic functions are computed. Peaks in the incremental capacity as function of concentration in the experimental data of Thompson are reproduced in our model.
Date: August 1, 1980
Creator: Osorio, R. & Falicov, L. M.
Partner: UNT Libraries Government Documents Department