Influence of local environment on the electronic structure and magnetic properties of Ni1-xCuxMnSb alloys

The magnetic ordering in Ni1-xCuxMnSb alloys changes from ferromagnetic (x = 0) to antiferromagnetic (x = 1). The X-ray and neutron diffraction showed that the systems crystallise in C1(b) type structure. We present an influe nce of the local chemical ordering on the electronic and magnetic propertie s of Ni1-xCuxMnSb alloys. The band structure and the magnetic moments were calculated by the spin-polarised linear muffin-tin orbital in the atomic sp here approximation method for the experimental values of the lattice parame ters. The magnetic moment of Mn increases from 3.8 mu(B) for x = 0 to 4.18 mu B for x = 1.