Open AccessGrowth and physical properties of CaSrBaF6 single crystals
Author(s) -
S. N. Ushakov,
M. A. Uslamina,
А. А. Пыненков,
V. P. Mishkin,
К. Н. Нищев,
S. V. Kuznetsov,
Е. В. Чернова,
П. П. Федоров
Publication year - 2021
Publication title -
kondensirovannye sredy i mežfaznye granicy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.13
H-Index - 2
eISSN - 2687-0711
pISSN - 1606-867X
DOI - 10.17308/kcmf.2021.23/3310
Subject(s) - materials science , crystal (programming language) , absorption edge , absorption (acoustics) , doping , wavelength , infrared , single crystal , refractive index , visible spectrum , optics , refraction , ion , analytical chemistry (journal) , crystallography , optoelectronics , chemistry , band gap , physics , composite material , programming language , organic chemistry , chromatography , computer science
Using the Bridgman-Stockbarger method, crystals of triple fluoride CaF2-SrF2-BaF2 were grown in a composition range similar to that of CaSrBaF6. The crystals were 10-12 mm in diameter and 50–60 mm in length. The CaSrBaF6 crystal is a new optical material which is transparent in the mid-IR, visible and UV ranges. The uneven distribution of the components along the length of the crystal did not exceed 10 %. The edge of the absorption band in the IR range was 14.3 μm, and the optical absorption at the wavelength of 200 nm did not exceed 18 % (less than 0.2 cm–1). The refraction indices were 1.4527, 1.4488, and 1.4458 for the wavelengths of 633, 969, and 1539 nm respectively. The crystal melts in the temperature range of 1150–1210 °С. The CaSrBaF6 composition is an appropriate matrix for doping with rare-earth ions in order to obtain functional single-crystal and ceramic materials of the visible and IR ranges.