Summary
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1.
A study was made of the influence of temperature on the electrical resistivity (20–950°C), a differential thermal emf (20–350°C), and magnetic susceptibility (20–800°C of chromium disilicide, as well as of solid solutions of VSi2 (0–100 mol.%) and TiSi2 (0–80 mol.%) in chromium disilicide.
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2.
On the basis of experimental data it is shown that the chromium, vanadium, and titanium atoms in the solid solutions investigated are in a tetravalent state. The atomic orbits of vanadium alone have a single electron with an uncompensated spin, whereas neither chromium nor titanium atoms have such electrons.
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3.
It has been established that, with increasing concentration of VSi2 and TiSi2 in chromium disilicide, the overlapping of the wave functions of the metal atoms is intensified, and a gradual change from typically semiconducting to metallic properties is observed.
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4.
The characteristics of the valence and zone models of solid solutions based on chromium disilicide are examined. It is noted that the concentration dependence of the properties of these solid solutions at substantial VSi2 and TiSi2 concentrations is responsible for changes in the density of states near the Fermi surface rather than changes in the degree of filling of the valence band.
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Translated from Poroshkovaya Metallurgiya, No. 9(45), pp. 67–74, September, 1966.
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Sidorenko, F.A., Radovskii, I.Z., Zelenin, L.P. et al. Electrical and magnetic properties of solid solutions of vanadium and titanium disilicides in chromium disilicide. Powder Metall Met Ceram 5, 730–736 (1966). https://doi.org/10.1007/BF00774101
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DOI: https://doi.org/10.1007/BF00774101