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Analysis of the growth conditions of long single crystalline basal-plane-faceted sapphire ribbons by the Stepanov/EFG technique

: Denisov, A.V.; Molchanov, A.; Punin, Y.O.; Krymov, V.M.; Müller, G.; Friedrich, J.


Journal of Crystal Growth 344 (2012), Nr.1, S.38-44
ISSN: 0022-0248
Fraunhofer IISB ()

The 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.