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Local ordering and thermodynamic properties of bismuth‐tellurium alloy
Author(s) -
Hussain L. A.,
Akinlade O.,
Uhuegbu C. C.
Publication year - 1996
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221950203
Subject(s) - entropy of mixing , bismuth , alloy , thermodynamics , tellurium , mixing (physics) , short range order , long wavelength limit , materials science , entropy (arrow of time) , gibbs free energy , chemistry , enthalpy , metallurgy , condensed matter physics , crystallography , physics , quantum mechanics
Abstract A quasi‐lattice model is used to explain the concentration dependence of the free energy of mixing, heat of mixing, excess entropy of mixing, chemical short‐range order parameter, and concentration‐concentration fluctuation in the long‐wavelength limit for Bi‐Te molten alloys. The results show that the molten alloys form a complex of the form Bi 2 Te 3 , with chemical ordering throughout the whole concentration range with a peak at a concentration of 0.50.