Electronic Structure and Magnetic Exchange Coupling in Ferromagnetic Full Heusler Alloys

Abstract

Density-functional studies of the electronic structures and exchange interaction parameters have been performed for a series of ferromagnetic full Heusler alloys of general formula Co${}_2$MnZ (Z = Ga, Si, Ge, Sn), Rh${}_2$MnZ (Z = Ge, Sn, Pb), Ni${}_2$MnSn, Cu${}_2$MnSn and Pd${}_2$MnSn, and the connection between the electronic spectra and the magnetic interactions have been studied. Different mechanisms contributing to the exchange coupling are revealed. The band dependence of the exchange parameters, their dependence on volume and valence electron concentration have been thoroughly analyzed within the Green function technique.

9 figures, 6 tables

References in corpus (2)

• Slater-Pauling Behavior of the Half-Ferromagnetic Full-Heusler Alloys
• The exchange coupling and spin waves in metallic magnets: removal of the long-wave approximation

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