[en] The field and temperature dependences of the electrical conductivity of europium sulfide are studied in the temperature range 160–430 K. It is found that the electrical conductivity increases in strong electric fields of up to 2 × 10⁴ V/cm by the Poole–Frenkel mechanism.

[en] In this work the basic principles of creation of semiconductor Fourier spectroscopy for the gas analysis are formulated, that will allow us to increase selectivity, sensitivity and stability of an operation of the gas sensors. The experimental data obtained by means of semiconductor sensors on the basis of samarium sulfide made by zol-gel technology given detecting micro impurity of propane and methane in atmospheric air are given in work. (paper)

[en] The influence of doping of samarium monosulfide with gadolinium has been investigated. Experiments have been carried out in the temperature range of 300–450 K. A decrease in the effect value with increasing gadolinium content in the Sm1–xGdxS heterostructure with x ranged from 0 to 0.13 has been found and explained. Formulas for calculating the output signal in dependence of the doping value have been derived.

[en] The article emphasizes the mechanism of the thermovoltaic effect in the rare-earth semiconductor material of samarium sulfide (SmS). The maximum achieved parameters of the SmS based thermal energy converters are given. Comparison of them with the parameters of classical thermoelements proves the practicability of further developments in this field. (paper)

[en] The developed method of semiconductor gas Fourier spectroscopy is based on the relationship of the obtained calibration characteristics of the concentration sensors for volatile hydrocarbons contained in atmospheric air (in our case, it is methane and propane), with electrophysical parameters of the gas sensitive layers. The study used gas sensors based on samarium sulfide with reproducible and stable calibration characteristics. The working layers of hydrocarbon concentration sensors were obtained by two different methods: the explosive spraying method and the sol-gel coating technology. In this paper we present a system of equations that includes the main electrophysical characteristics of a gas-sensitive film which is solved by numerical methods. These equations reflect a unique relationship between the Debye screening length (L_d), film thickness (d), Fermi level (E_F), concentration of impurity levels (N_d), dielectric constant of the medium (ε), crystal lattice constant (a), and mobility of the main charge carriers (μ) with the observed data on the change in the conductivity of thin films of samarium sulfide in the processes of adsorption of methane and propane molecules on their surface. In the present work, we obtained the first calculated data of such parameters for the current prototype images of gas sensors of methane and propane. (paper)

[en] In this paper, the dependencies of Young's modulus and attenuation decrement on samarium sulfide polycrystals (SmS) under various annealing temperatures are studied by the piezoelectric ultrasonic composite oscillator technique at a frequency of 100 kHz in the temperature range of 80–300 K. A decrease in Young's modulus with an increase of the annealing temperature due to the texturing of the material was revealed. At the same time, attenuation peaks were observed at temperatures about 90 and 125 K, presumably due to Niblett-Wilks and Bordoni relaxations. (paper)