Article ID Journal Published Year Pages File Type
1593209 Solid State Communications 2011 4 Pages PDF
Abstract

The electronic density of states (DOS) and magnetic moments of rare-earth antimonides (RCrSb3) have been studied by the first principles full-potential linearized augmented plane wave (FP-LAPW) method based on density functional theory (DFT). For the exchange–correlation potential, the LSDA+U method is used. The effective moments of LaCrSb3, CeCrSb3, NdCrSb3, GdCrSb3, and DyCrSb3 were found to be 3.03μB, 3.73μB, 5.77μB, 8.27μB and 4.69μB respectively. The exchange-splittings of Cr-3d state electrons and 4f-states of rare earth elements were analyzed to explain the magnetic nature of these systems. The Cr atom plays a significant role on the magnetic properties due to the hybridization between Cr-3d and Sb-5p state orbitals. The results obtained are compared and found to be in close agreement with the available data.

► First principle based ground state calculations of RCrSb3 (where R=La, Ce, Nd, Gd and Dy) are made. ► They showed ferromagnetic behavior due to the exchange-splitting. ► Exchange-splitting occurs between spin-up and spin-down states of Cr-3d and R (La, Ce, Nd, Gd and Dy)-4f ions. ► Hybridization between Cr-3d and Sb-5p atom shows the magnetic properties of RCrSb3. ► The effective moments of LaCrSb3, CeCrSb3, NdCrSb3, GdCrSb3, and DyCrSb3 were found to be 3.03μB, 3.73μB, 5.77μB, 8.27μB and 4.69μB respectively.

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Physical Sciences and Engineering Materials Science Materials Science (General)
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