ELECTRONIC-STRUCTURE AND FERMI-SURFACE OF NI3FE

We have studied the electronic structure of the strongly ferromagnetic compound, ordered Ni3Fe. The calculations are done self-consistently using a semirelativistic linear-muffin-tin-orbital method in the atomic-sphere approximation. A basis of s, p, and d orbitals is used. Different Wigner-Seitz radii are used for Ni and Fe atoms. We present a detailed theoretical study of the Fermi surface of Ni3Fe. A comparison with the Fermi surface of Ni3Al, for which experimental data are also available, makes an interesting study and points to the consistency of our calculations.