Abstract
Directional magnetic Compton profiles (MCPs) of ferromagnetic intermetallic compound Mn 1.1 Sb are measured using a circularly polarized synchrotron radiation light source. The overall shape of the derived momentum-density distribution of the magnetic electrons is reproduced well with the Hartree-Fock 3 d wavefunction of free Mn atoms except in the low momentum region (∣ P ∣2.0 atomic units). The anisotropy observed in the low momentum region is inexplicable only with the population, determined previously by a polarized neutron measurement, of unpaired electrons in Mn-3 d orbitals in the trigonal crystalline field. The present result suggests an additional anisotropic negative polarization of Sb-5 p electrons. The anisotropy is discussed using the hydrogen-like atomic Sb-5 p wavefunctions.
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