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Low‐temperature phase formation in the SrF 2 –LaF 3 system
Author(s) -
Fedorov Pavel P.,
Alexandrov Alexander A.,
Voronov Valery V.,
Mayakova Mariya N.,
Baranchikov Alexander E.,
Ivanov Vladimir K.
Publication year - 2021
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17666
Subject(s) - solubility , phase (matter) , analytical chemistry (journal) , flux (metallurgy) , materials science , solid solution , chemistry , mineralogy , crystallography , metallurgy , chromatography , organic chemistry
Phase formation in the SrF 2 –LaF 3 system was studied at temperatures ranging from 300°C to 450°C using nitrate flux. The solubility of LaF 3 in SrF 2 decreases with decreasing temperature. The equilibrium width of the solid solution region Sr 1− x La x F 2+ x at 400°C, it is 44.6 ± 0.4 mol% LaF 3 ( x = 0.446), at 350°C — 38.3 ± 0.7 mol% LaF 3 ( x = 0.383), and decreases almost to zero at 300°C.