Denisov, A.V.A.V.DenisovMolchanov, A.A.MolchanovPunin, Y.O.Y.O.PuninKrymov, V.M.V.M.KrymovMüller, G.G.MüllerFriedrich, J.J.Friedrich2022-03-042022-03-042012https://publica.fraunhofer.de/handle/publica/22857910.1016/j.jcrysgro.2012.02.005The influence of the growth conditions and process parameters on the formation of blocks during growth of basal-plane-faceted single crystalline sapphire ribbons by the Stepanov/EFG technique was investigated. A number of modifications of the crystallization unit were used to vary systematically the crystal growth conditions. The results gave clearly the growth conditions which are favorable to get blocks-free single crystalline basal-plane-faceted sapphire ribbons.en670548journal article