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- W2040243785 abstract "Abstract First principles calculations have been performed to study the electronic structure and magnetic properties of Cr-based double perovskite oxides Sr 2 CrSbO 6 and Ca 2 CrSbO 6 using full potential linearized augmented plane wave method under generalized gradient approximation (GGA) scheme. In our calculation, we have applied onsite Coulomb potential U at Cr site. The density of states (DOS) of Sr 2 CrSbO 6 has been studied in three different crystal structures. Due to the different crystal symmetry of Sr 2 CrSbO 6 at different temperatures, the DOS spectra differ from one another near the Fermi level. The insulating ground states have been obtained from GGA+ U calculation for both the materials. It has been observed from DOS spectra that oxygen 2p-derived states hybridize strongly with Cr-d states and this hybridization plays an important role in the magnetic properties. The calculated magnetic moments for Cr are found to be 2.65, 2.60 and 2.72 μB for monoclinic, tetragonal, cubic phases of Sr 2 CrSbO 6 , respectively and 2.68 μB for Ca 2 CrSbO 6 . The obtained magnetic moments suggest the 3+ states of Cr (3d 3 ) in these oxides." @default.
- W2040243785 created "2016-06-24" @default.
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- W2040243785 date "2013-02-01" @default.
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- W2040243785 title "Electronic structure of A2CrSbO6 [A=Sr, Ca]: Ab-initio study" @default.
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- W2040243785 doi "https://doi.org/10.1016/j.jpcs.2012.09.014" @default.
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