The local-spin-density ground state properties of three Ni-based Heusler alloys Ni2MnY with Y=In, Sn and Sb have been calculated self-consistently using the linear-muffin-tin-orbital (LMTO) method. The ground state properties are in good agreement with available experimental data. In particular the observed decrease of magnetic moment with increasing atomic number for the metalloid is reproduced theoretically and explained as a rigid band effect.
 

Solid State Communications, 67 13-14, 1988.