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Papers by Author: Y.I. Kuz’min

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Optical Properties and Electronic Structure of LaNi_5-XCu_x (x=0–1.2) Intermetallic System

Authors: Yu.V. Knyazev, Y.I. Kuz’min, A.V. Lukoyanov, Anatoly G. Kuchin

Abstract: Optical properties of the LaNi5-xCux (x = 0, 0.6, 1, 1.2) compounds were studied. It was shown that substitution of copper for nickel led to noticeable changes in the optical conductivity spectra. Calculations of the electronic structure of compounds with x = 0, 1, 2 were performed using a generalized gradient approximation. The interband optical conductivity of these intermetallics was calculated. The optical ellipsometrical measurements and theoretical calculations testify to the appearance of a broad absorption structure associated with the Cu 3d  Ni 3d electron transitions and increasing with the growth of copper content.

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Role of Electronic Band Structure and Lattice Parameters in Magnetism of the R₂(Fe,M)₁₇, М = Si, Al Compounds

Authors: Anatoly G. Kuchin, Yu.V. Knyazev, Y.I. Kuz’min, A.V. Lukoyanov, I.A. Nekrasov, V.I. Anisimov, N.I. Kourov, I.V. Medvedeva, V.I. Voronin

Abstract: Magnetic, electronic, structural and magnetovolume properties of the R2Fe17-xMx (R = Y, Lu, Ce; M = Si or Al) compounds were studied. We pioneered to apply electronic band parameters determination to account for the anomalous volume dependence of ferromagnetism in these compounds.