Abstract
Electronic band structures of manganese compounds having cubic perovskite-type structure are calculated by a self-consistent augmented-plane-wave method. The energy dispersion, density of states and Fermi surface calculated for the nonmagnetic state of Mn3MC (M=Zn,Ga,In,Sn) are shown. The ferromagnetic band is also calculated for Mn3GaC and the authors obtain the magnetic moment, which is in good agreement with observation.