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Complex analysis of the quality of the surface of the multicomponent epitaxial layers AIIIBV compounds grown at the different conditions of temperature gradient zone recrystallization was performed. Main parameters that determine the quality of the surface and structural perfection of multicomponent heterostructures AlInGaPAs / GaAs have been found: the temperature gradient, the composition of the solution-melt, subcooling, matching the lattice parameters and the CTE of the layer and the substrate, the substrate orientation.

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