Antiferromagnetic Structure of Dysprosium Aluminum Garnet

Abstract

The low-temperature antiferromagnetic structure of ${\mathrm{Dy}}_3$ ${\mathrm{Al}}_5$ ${\mathrm{O}}_{12}$(DAG) has been established by means of neutron diffraction. The spin arrangement consists of six interpenetrating substructures directed along $\pm X$, $\pm Y$, $\pm Z$, as predicted by Wolf and co-workers. The observed value of the ${\mathrm{Dy}}^{+3\mathrm{}}$ moment is 9.0±0.5 ${\mathrm{\mu }}_{\mathit{B}}$, in agreement with the $g$ value obtained from esr measurements.