Growth of Fluorite Solid Solution Crystals in the Ternary SrF2–BaF2–LaF3 System and Investigation of Their Properties

A series of three-component isostructural fluorite crystals (Sr 1– x Ba x ) 0.7 La 0.3 F 2.3 (sp. gr. , 0 ≤ x ≤ 1), the compositions of which belong to the Sr 0.7 La 0.3 F 2.3 –Ba 0.7 La 0.3 F 2.3 polythermal section in the SrF 2 –BaF 2 –LaF 3 system, has been grown for the first time by vertical di...

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Bibliographic Details
Published in:Crystallography reports 2018-11, Vol.63 (6), p.1015-1021
Main Authors: Karimov, D. N., Buchinskaya, I. I., Ivanova, A. G., Il’ina, O. N., Ivanovskaya, N. A., Sorokin, N. I., Sobolev, B. P., Glushkova, T. M., Ksenofontov, D. A.
Format: Article
Language:English
Subjects:
Barium fluorides
Crystal Growth
Crystallization
Crystallography and Scattering Methods
Crystals
Electrical properties
Fluorite
Lanthanum fluorides
Optical design
Optical properties
Physics
Physics and Astronomy
Solid solutions
Strontium
Strontium fluorides
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Summary:A series of three-component isostructural fluorite crystals (Sr 1– x Ba x ) 0.7 La 0.3 F 2.3 (sp. gr. , 0 ≤ x ≤ 1), the compositions of which belong to the Sr 0.7 La 0.3 F 2.3 –Ba 0.7 La 0.3 F 2.3 polythermal section in the SrF 2 –BaF 2 –LaF 3 system, has been grown for the first time by vertical directional crystallization. Optical, mechanical, and electrical properties of three-component (Sr 1– x Ba x ) 0.7 La 0.3 F 2.3 and two-component M 0.7 La 0.3 F 2.3 ( M = Sr or Ba) crystals have been investigated and subjected to comparative analysis. It is shown that all three-component crystals (Sr 1– x Ba x ) 0.7 La 0.3 F 2.3 are promising optical design materials.
ISSN:1063-7745
1562-689X
DOI:10.1134/S1063774518060172