Abstract
The far- and mid-IR reflection spectra of Sm1 + xS (x = 0–0.17) samples are recorded and analyzed, as well as their electrical and structural parameters at a temperature of T = 300 K. The bond ionicity in SmS is shown to fall with a decrease in the area of the X-ray coherent scattering region and an increase in the concentration of donor impurities and, consequently, conduction electron concentration. The electrical conductivity of stoichiometric SmS single crystals and polycrystals can be determined with an error of 10% from the IR reflection spectra. Due to the low structural quality of the samples, the electrical conductivity cannot be determined in the case of deviation from stoichiometry.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
V. V. Kaminskii, A. A. Molodykh, S. M. Solov’ev, A. A. Vinogradov, and N. M. Volodin, RF Patent No. 2564698 (2014).
V. M. Egorov, V. V. Kaminskii, M. M. Kazanin, S. M. Solov’ev, and A. V. Golubkov, Tech. Phys. Lett. 41, 381 (2015).
S. A. Kazakov, V. V. Kaminskii, S. M. Solov’ev, and N. V. Sharenkova, Nauch. Priborostroen. 25, 116 (2015).
A. V. Golubkov, E. V. Goncharova, V. P. Zhuze, G. M. Lozhnov, V. M. Sergeeva, and I. A. Smirnov, Physical Properties of Rare-Earth Chalcogenides (Nauka, Leningrad, 1973) [in Russian].
Yu. V. Ulashkevich, V. V. Kaminskii, and M. M. Kazanin, Phys. Solid State 54, 2198 (2012).
G. P. Skornyakov and V. L. Konstantinov, in Physics and Chemistry of Rare-Earth Semiconductors (Sverdlovsk, 1977), p. 20 [in Russian].
V. Zelezny, J. Petzelt, V. V. Kaminski, M. V. Romanova, and A. V. Golubkov, Solid State Commun. 72, 43 (1089).
Yu. V. Ulashkevich, V. V. Kaminskii, and A. V. Golubkov, Semiconductors 43, 305 (2009).
A. V. Golubkov, T. B. Zhukova, and V. M. Sergeeva, Neorg. Mater. 2, 77 (1966).
N. V. Sharenkova, V. V. Kaminskii, A. V. Golubkov, L. N. Vasil’ev, and G. A. Kamenskaya, Phys. Solid State 47, 622 (2005).
V. M. Sergeeva et al., Neorg. Mater. 8, 2114 (1972).
G. Navascues and F. Flores, Solid State Commun. 9, 1261 (1971).
V. D. Kulakovskii and V. D. Egorov, Sov. Phys. Solid State 15, 368 (1973).
F. Flores, F. Garsia-Voliner, and G. Navascues, Surf. Sci. 24, 61 (1971).
L. N. Vasil’ev, V. V. Kaminskii, M. V. Romanova, N. V. Sharenkova, and A. V. Golubkov, Phys. Solid State 48, 1884 (2006).
B. Szigeti, Trans. Faraday Soc. 45, 155 (1949).
J. D. Axe, J. Phys. Chem. Solids 30, 1403 (1969).
N. V. Sharenkova, V. V. Kaminskii, M. V. Romanova, L. N. Vasil’ev, and G. A. Kamenskaya, Phys. Solid State 50, 1207 (2008).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © Yu.V. Ulashkevich, V.V. Kaminskiy, M.V. Romanova, N.V. Sharenkova, 2018, published in Fizika i Tekhnika Poluprovodnikov, 2018, Vol. 52, No. 2, pp. 184–188.
Rights and permissions
About this article
Cite this article
Ulashkevich, Y.V., Kaminskiy, V.V., Romanova, M.V. et al. Investigation of the Far-IR Reflection Spectra of SmS Single Crystals and Polycrystals in the Homogeneity Range. Semiconductors 52, 172–176 (2018). https://doi.org/10.1134/S1063782618020227
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063782618020227