Optical Properties and Electronic Structure of LaNi5-XCux (x=0–1.2) Intermetallic System
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.
Y.V. Knyazev et al., "Optical Properties and Electronic Structure of LaNi5-XCux (x=0–1.2) Intermetallic System", Solid State Phenomena, Vols. 168-169, pp. 529-532, 2011