Growth of a 3 inches langasite crystal with clear faceting

Satoshi Uda, Oleg Buzanov

Research output: Contribution to journalConference articlepeer-review

40 Citations (Scopus)


A macrodefect-free langasite (La3Ga5SiO14) crystal 3 inches in diameter was grown along its Z-axis by the Czochralski technique. The grown crystal showed clear faceting on (0001) and (011̄0) faces, forming a hexagonal column shape, and it had minor faceting on (011̄1) in the conical part, making a stepped hexagonal pyramid. Thermal treatment of the melt and uniform interface shape are important to the growth of langasite with stable facet development. Interface instability occurred during the formation of the conical portion of the crystal under a high crystal rotation rate. The homogeneity in composition was investigated two dimensionally by the X-ray Bond diffraction method. The congruent melt composition for langasite is also discussed relative to the stoichiometric composition.

Original languageEnglish
Pages (from-to)318-324
Number of pages7
JournalJournal of Crystal Growth
Issue number1
Publication statusPublished - 2000 Apr 1
EventThe 11th American Conference on Crystal Growth and Epitaxy - Tucson, AZ, USA
Duration: 1999 Aug 11999 Aug 6


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