Magnetic Structure ofMn4N

Abstract

The magnetic structure of ${\mathrm{Mn}}_{4}$N has been determined by neutron diffraction from powders. The cubic unit cell has Mn at the corner and face centers and N at the body center. Standard diffraction techniques led to four possible models and it was necessary to perform polarized neutron beam experiments to resolve this ambiguity. The structure is ferrimagnetic with a corner moment of $3.5{\ensuremath{\mu}}_{B}$ antiparallel to the three face center moments of ${0.7}_{7}{\ensuremath{\mu}}_{B}$.