Study of congruent-melting composition of langasite and its effects on crystal quality

Shou Qi Wang, Jiro Harada, Satoshi Uda

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

Congruent-melting composition of langasite (La3Ga5SiO14) was studied by a combination of melting-point measurement, crystal growth and compositional characterizations. The melting points of sintered samples with various compositions within the solid solution range determined by X-ray diffraction (XRD) around the stoichiometric composition were measured by differential thermal analysis (DTA). Upon the growth of single crystals from the compositions with the highest melting point, the compositions of various parts of the crystals and residual melts were investigated by X-ray fluorescence spectrum (XFS). The congruent-melting composition was determined to be the composition from which a minimum deviation of composition of both the crystal and the residual melt was obtained.

Original languageEnglish
Pages (from-to)263-268
Number of pages6
JournalJournal of Crystal Growth
Volume219
Issue number3
DOIs
Publication statusPublished - 2000 Oct 15
Externally publishedYes

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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