Magnetic structure of the inverse perovskite (Ce3N)In

Single-phase microcrystalline powder (Ce3N)In was prepared by reaction of CeN, Ce and In. The magnetic moments located on the cerium atoms in the inverse cubic perovskite (space group Pm3¯m, Z = 1, a = 5.0416(4) Å) order antiferromagnetically below 9(1) K. Application of an external magnetic field reveals a multistep metamagnetic behavior. Neutron diffraction was performed at various temperatures without application of external magnetic fields. Below TN additional reflections due to magnetic order correspond to a magnetic propagation vector of k = (0, ½, ½). Refinements of the magnetic structure well below TN lead to three independent magnetic substructures parallel to the crystallographic axes. All three magnetic substructures are internally antiferromagnetically ordered resulting in a zero net magnetic moment.

Figure optionsDownload as PowerPoint slide