Growth of the KR3F10 (R = Tb–Er) Compounds by the Vertical Directional Crystallization Method. II. Refinement of the Character of Melting, Growth, and Some Physical Properties of KDy3F10 Crystals

• Published in: Crystallography reports Vol. 66; no. 6; pp. 1133 - 1137
• Main Authors: Karimov, D. N., Buchinskaya, I. I., Popov, P. A., Koshelev, A. V., Samsonova, N. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-11-2021; Springer Nature B.V
• Subjects: Bridgman method; Composition; Crystal Growth; Crystallization; Crystallography and Scattering Methods; Cubic lattice; Homogeneity; Optical properties; Physical properties; Physics; Physics and Astronomy; Temperature dependence; Thermal conductivity
• ISSN: 1063-7745; 1562-689X
• DOI: 10.1134/S1063774521060171

KDy
3
F
10
crystals have been grown from melt by the Bridgman technique. The incongruent character of melting of this compound is confirmed. The optimal melt composition for growing KDy
3
F
10
crystals has been determined experimentally and found to be 27.0 ± 0.5 mol % KF. KDy
3
F
10
, as well as KTb
3
F
10
, is a phase of variable composition. It is characterized by the presence of a small homogeneity region, where the cubic lattice (sp. gr.
) parameter is limited to the range from 11.6276(2) to 11.6118 (2) Å. The temperature dependence of the thermal conductivity of KDy
3
F
10
and DyF
3
crystals has been investigated for the first time, and some of their optical characteristics have been studied.