Premium
Phase equilibria in the ternary reciprocal system Li, Ba // BO 2 , F and growth of bulk β‐BaB 2 O 4 crystals
Author(s) -
Simonova E. A.,
Kokh A. E.,
Koova N. G.,
Shevchenko V. S.,
Kokh D. A.,
Vlezko V. A.,
Fedorov P. P.
Publication year - 2017
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s1600576716017970
Subject(s) - isothermal process , ternary numeral system , differential thermal analysis , crystallization , ternary operation , phase (matter) , crystallography , crystal growth , diffraction , materials science , powder diffraction , crystal (programming language) , analytical chemistry (journal) , mineralogy , chemistry , thermodynamics , optics , physics , organic chemistry , chromatography , computer science , programming language
In order to find the optimum solvent for the growth of nonlinear optical β‐BaB 2 O 4 crystals, the phase relationships in the ternary reciprocal system Li, Ba // BO 2 , F have been studied using solid state synthesis, differential thermal analysis and X‐ray powder diffraction. Isothermal and polythermal sections of the system Li, Ba // BO 2 , F are reported. In the studied system, the following compounds are formed: LiBa 2 B 5 O 10 (melts by peritectic reaction at 930°C, i.e. 1203 K) and LiBaF 3 (melts incongruently at 850°C, i.e. 1123 K). Visual polythermal analysis of seeding and growth of β‐BaB 2 O 4 crystals in this system was carried out. The primary crystallization field of β‐BaB 2 O 4 was defined. Using the top‐seeded pulling technique, a β‐BaB 2 O 4 crystal of 93 mm in diameter, 34 mm in height and 520 g in weight has been grown.