Cation distribution and ferromagnetic exchange in the image perovskite investigated by neutron powder diffraction

The synthesis and characterization of a polycrystalline image sample are reported. The oxygen-content, determined by the thermogravimetric method from complete reduction in flowing image, shows some oxygen deficiency leading to the composition image. Neutron powder diffraction shows some cation ordering at the six-coordinate site resulting in a monoclinic unit cell with image, image, image and, image (space group image) at 290 K. The sample undergoes a transition to a ferromagnetic phase at image, with an ordered magnetic moment of 2.72(2) image per formula unit aligned along [0 0 1].