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Temperature distribution in growing semi‐transparent crystals (III). Conical liquid/solid interface
Author(s) -
Kvapil Jiří,
Kubelka J.,
Kvapil Josef,
Perner B.
Publication year - 1983
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170180523
Subject(s) - materials science , conical surface , stoichiometry , melting point , crystal (programming language) , enhanced data rates for gsm evolution , phase (matter) , layer (electronics) , crystallography , analytical chemistry (journal) , composite material , chemistry , telecommunications , organic chemistry , chromatography , computer science , programming language
Temperature distribution in Al 2 O 3 and YAG crystals grown by Czochralski method and in the melt layer adjacent to the liquid/solid interface of the conical shape was computed. The results were compared with the quality of the crystals. Using a highly absorbing material, temperature difference near the deeply submerged sharp interface decreases from the edge to the centre of a crystal and it is relatively great and unalterable in the case of a shallowly submerged blunt interface. Sharp interface show the crystals grown from the melt of the same composition (Al 2 O 3 or accurately “stoichiometric” YAG), whereas the blunt one is typical of YAG grown from the melt of the “non‐stoichiometric” composition, because its solidifying point is below the melting point of YAG phase.