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Revista mexicana de física
Print version ISSN 0035-001X
Abstract
DIAZ ALBARRAN, S.F. and RODRIGUEZ PERALTA, P.. Unstable states of InxAlyGa1-x-yN quaternary alloys. Rev. mex. fis. [online]. 2010, vol.56, n.2, pp.132-134. ISSN 0035-001X.
Regions of unstable states characterized by the spinodal decomposition of high-Al-content InxAlyGa1-x-yN quaternary alloys lattices matched to the GaN (001) substrate are described. The alloy are represented as strictly regular solutions. In the analysis we take into account the internal deformation and elastic strain energies. The regions of unstable states or ranges of spinodal decomposition considering the compositions 0.06 < x < 0.18 and 0 < y < 0.95 with and without elastic energy are demonstrated up to 580°C. We conclude that high concentrations of aluminum dramatically increased the phase separation temperature.
Keywords : Quaternary alloys; spinodal decomposition.