Calculated spinodal and isotherms for In1-x-yGaxAlyN for a constant K of 7 x 106 cal/mol·Å2.5. The spinodal isotherms at a temperature of 600, 800, and 1000°C are shown with solid curves. The hatched region shows the miscibility gap at 800°C predicted from the spinodal isotherm. The binodal isotherm at a temperature of 800°C and its tie lines are shown with dotted curves and dashed lines, respectively. The transformed lattice constants of binary alloys from a wurtzite structure to a zinc-blende structure and the interaction parameter of three pseudobinary alloys are also expressed.
© 1998 The Materials Research Society
