The electronic structure of ordered Ni3Mn, which is a strong ferromagn
et, is calculated self-consistently using the semirelativistic linear-
muffin-tin-orbital method in the atomic-sphere approximation. Differen
t Wigner-Seitz radii are used for Ni and Mn atoms. Good agreement with
experimental data is obtained for the coefficient of electronic speci
fic heat and the magnetic moment at the Ni and Mn sites. We have calcu
lated the Fermi surface of Ni3Mn.