Phase diagram for pseudomorphic Si/sub x/Ge/sub 1-x/ crystals

Abstract

The solid-liquid phase diagram is calculated for semiconductor binary solid solutions Si/sub x/Ge/sub 1-x/ coherently coupled with the lattice-mismatched substrates of various orientations. It is shown that elastic strain in pseudomorphic alloys results in dramatic reconfiguration of the familiar lens-type bulk phase diagram significantly shifting the melting points of pure Si or Ge crystals due to additional stress-induced energy.