The magnetic structure of multiferroic BaMnF₄

Abstract

The multiferroic material BaMnF(4) has been investigated with unpolarized and polarized neutron diffraction. The structure has been shown to be antiferromagnetic. The magnetic moments are aligned at 12° to the b direction in the bc plane, 3° different from the previously determined value. The ferromagnetic component that is indicative of the linear magnetoelectric effect was not observed.