Surface Stability of Ordered Ga0.5In0.5P and GaAs0.5Sb0.5 Alloys
P. Bogusławski
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland
(Received: August 8, 1990)
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Formation enthalpies of (001) surfaces terminating ordered Ga0.5In0.5P and GaAs0.5Sb0.5 alloys were calculated using the VFF model. For several ordered phases, chemically ordered surfaces were found to be stable against surface segregation. In particular, even phases unstable against bulk segregation may be terminated by a stable surface.
DOI: 10.12693/APhysPolA.79.125
PACS numbers: 68.65.+g, 68.60.Dv, 61.55.Hg