Antiferromagnetism in ${\mathrm{V}}_2$${\mathrm{O}}_3$

The existence of antiferromagnetic order in the monoclinic phase of ${\mathrm{V}}_2$${\mathrm{O}}_3$ has been confirmed by a neutron polarization analysis experiment. Conventional neutron-diffraction experiments on powders and single crystals have been performed to determine the magnetic structure. The observations are in accord with a model in which the V moments are ferromagnetically coupled in monoclinic (010) layers, or hexagonal (110) layers, with a reversal between adjacent layers. The ordered moment is (1.2 ± 0.1)${\mathrm{\mu }}_{\mathrm{B}}$ per V atom.