Abstract
AbstractThe pseudopotential theory of covalent crystals is applied to Si1−xGex systems using the virtual crystal approximation, the pseudo alloy atom model, and the ordered zinc‐blende‐type lattice (Si0.5Ge0.5). Calculated values of the equilibrium point are in good agreement with the experimental lattice constants. But, at the low temperatures, the phase mixture Si1−x + Gex is favourable compared with the disordered solid solution.
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