Magnetic structure of binary fluorides containing Mn2+

Abstract
Spin orderings of the binary fluorides with chemical formula XMnF3 (X = Na, Rb, Cs, and NH4) were investigated by neutron diffraction. The antiferromagnetic lattices of the compounds with X = Na, Rb, and NH4 are found to be of the same basic type as found in KMnF3 (G-type). In CsMnF3, which is hexagonal, the Mn2+ layers are arranged in an antiparallel sequence along the c-axis, with the spin direction normal to the axis