화학공학소재연구정보센터
Current Applied Physics, Vol.12, No.1, 184-187, 2012
Investigation of half metallicity in Fe doped CdSe and Co doped CdSe materials
The objective of the present work is to evaluate half metallicity and spin dependent transport properties of iron doped CdSe and cobalt doped CdSe compounds. The spin-polarized band structures (semi-conductor in one spin state and conductor in the other spin state) predict that Cd(0.875)Fe(0.125)Se and Cd(0.875)Co(0.125)Se are half metals. The calculated crystal filed splitting energy show larger energy gap between e(g) and t(2g) for Fe than Co doped CdSe compound. Furthermore, magnetization, exchange coupling and band-gap increase with decrease in the lattice constant. Overall, Cd(0.875)Fe(0.125)Se and Cd(0.875)Co(0.125)Se in the zinc-blend phase show half-metallic ferromagnetic nature and are expected to be potential materials for spintronic devices. (C) 2011 Elsevier B. V. All rights reserved.