ORBITAL AND SPIN MAGNETIC-MOMENTS OF TPT3 (T=V,CR,MN,FE, AND CO)

Magnetic properties of TPt3 (T = V, Cr, Mn, Fe, and Co) are investigat ed based on first principles electronic structure calculations. Our th eoretical orbital and spin magnetic moments are found to be in good ag reement with experiments, including the orbital moment of Pf which is comparable to its total moment in CrPt3 An interpretation for systemat ic trends seen in the orbital and spin magnetic moments of the series TPt3 is presented by analyzing the calculated density of d states. The important role of hybridization between the 3d transition metal and P t d states in realizing a variation of the magnetism observed is empha sized.