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Crystal growth and dislocation arrangement of Czochralski alexandrite (BeAl 2 O 4 :Cr) single crystals
Author(s) -
Qiang Zhang,
Peizhen Deng,
Fuxi Gan
Publication year - 1990
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.2170250407
Subject(s) - czochralski method , perpendicular , crystallography , dislocation , crystal (programming language) , materials science , seed crystal , crystal growth , single crystal , optics , chemistry , physics , geometry , mathematics , computer science , programming language
The [001] oriented alexandrite (BeAl 2 O 4 :Cr) single crystals have been grown by the Czochralski pulling technique. The X‐ray topographic investigation indicates that the grown‐in dislocations mainly originate from the seed and propagate along the path normal or nearly perpendicular to the growth interface. The dislocation density and arrangement is closely related to the quality of the seed crystal.