It is calculated that spin-orbit coupling induces a predominant orbital magnetic moment ($-1.5\mathrm{}{\mu }_{\mathrm{B}}$) antiparallel to the spin moment ($1.0{\mu }_{\mathrm{B}}$) in the spin-polarized energy bands of UN. The shape of the magnetic form factor, pressure dependence of the moment, and presence of large magnetic anisotropy then become compatible with itinerant-electron theory.

• Received 8 July 1983

DOI:https://doi.org/10.1103/PhysRevLett.51.1708