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

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.

• Periodical: Solid State Phenomena (Volumes 168-169)
• Pages: 529-532
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.168-169.529
• Online since: December 2010
• Authors: Yu.V. Knyazev, Y.I. Kuz’min, A.V. Lukoyanov, Anatoly G. Kuchin
• Keywords: Crystal Structure, Density of States (DOS), Electronic Structure, Interband Absorption, Nickel-Rare-Earth Intermetallic Compounds, Optical Conductivity

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