Growth from the Melt and Properties Investigation of ScF3 Single Crystals
Shubnikov Institute of Crystallography of Federal Scientific Research Center «Crystallography and Photonics», Russian Academy of Sciences, Leninskiy Prospekt 59, Moscow 119333, Russia
Lomonosov Moscow State University, GSP-1, Leninskie Gory, Moscow 119991, Russia
Petrovsky Bryansk State University, Bezhitskaya str. 14, Bryansk 241036, Russia
Author to whom correspondence should be addressed.
Received: 28 June 2019 / Revised: 12 July 2019 / Accepted: 19 July 2019 / Published: 20 July 2019
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optical quality bulk crystals of the ReO3
structure type (space group
= 4.01401(3) Å) have been grown from the melt by Bridgman technique, in fluorinating atmosphere for the first time. Aiming to substantially reduce vaporization losses during the growth process graphite crucibles were designed. The crystal quality, optical, mechanical, thermal and electrophysical properties were studied. Novel ScF3
crystals refer to the low-refractive-index (nD
= 1.400(1)) optical materials with high transparency in the visible and IR spectral region up to 8.7 µm. The Vickers hardness of ScF3
~ 2.6 GPa) is substantially higher than that of CaF2
crystals possess unique high thermal conductivity (k
= 9.6 Wm−1
at 300 K) and low ionic conductivity (σ = 4 × 10−8
at 673 К) cause to the structural defects in the fluorine sublattice.
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Karimov, D.; Buchinskaya, I.; Arkharova, N.; Prosekov, P.; Grebenev, V.; Sorokin, N.; Glushkova, T.; Popov, P. Growth from the Melt and Properties Investigation of ScF3 Single Crystals. Crystals 2019, 9, 371.
Karimov D, Buchinskaya I, Arkharova N, Prosekov P, Grebenev V, Sorokin N, Glushkova T, Popov P. Growth from the Melt and Properties Investigation of ScF3 Single Crystals. Crystals. 2019; 9(7):371.
Karimov, Denis; Buchinskaya, Irina; Arkharova, Natalia; Prosekov, Pavel; Grebenev, Vadim; Sorokin, Nikolay; Glushkova, Tatiana; Popov, Pavel. 2019. "Growth from the Melt and Properties Investigation of ScF3 Single Crystals." Crystals 9, no. 7: 371.
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