Quasi-chemical treatment of intermediate phases appearing in nonstoichiometric compounds |
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| Authors: | Jun Tateno |
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| Institution: | Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken, Japan |
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| Abstract: | A quasi-chemical treatment of the superlattice formation model is applied to intermediate phases appearing in nonstoichiometric compounds. Two kinds of interaction energy are introduced and both the intermediate phase and two-phase separation are described in a single formula. The order parameter and the free energy are obtained as a function of temperature and composition. The boundaries of phases are determined by the common-tangent method. |
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