Abstract

DIAZ ALBARRAN, S.F.  and  ELYUKHIN, V.A.. Spinodal decomposition ranges of In_x Ga_1-x N_y P_1-y and GaAs_x N_y P_1-x-y alloys. Rev. mex. fis. [online]. 2007, vol.53, n.2, pp.114-119. ISSN 0035-001X.

We have described spinodal decomposition ranges of GaP-rich GaAs_x N_yP_1-x-y and In_x Ga_1-x N_yP_1-y alloy lattices matched to the GaP (001) substrate up to temperatures of 600°C. Transformation of bonds, strain and coherency strain energies at the phase separation are taken into account. The alloys are considered to be strictly regular solutions. The strain energies of the alloys were calculated with the interaction parameters estimated by the valence force field model. It is shown that GaAs_xN_yP_1-x-y, having one mixed sublattice, are more promising from the spinodal decomposition standpoint than In_xGa_1-xN_yP_1-y, with two mixed sublattices.

Keywords : Quaternary alloys; spinodal decomposition.