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A Triple Point in an Alloy with Modulated Compositional Order by Vittorio Massidda is a Physics and Astronomy article available to read on EtoBox.

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We consider a triangular lattice whose sites can be occupied by atoms A or B, which interact with each other up to second neighbours. The concentration of A atoms, x, is fixed. Using the mean-field approximation the free energy is written in terms of the occupation probabilities of the sites, which are evaluated by a classical statistical formalism. In this way, the free energies of different configurations can be compared with each other. It is found that in a certain range of values of the interaction constants a triple-point exists in the (x,1) phase diagram, where the disordered phase (D) coexists with a commensurate (C) and an incommensurate (I) modulated phase.

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Author

Vittorio Massidda

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-4526)

Published

1998

Language

EN

Field

Physics and Astronomy (Physical Sciences)