Neutron diffraction and Mössbauer studies of the isotope iron doped La–Ba–Mn–O

Abstract The perovskite La 0.67 Ba 0.33 Mn 0.99 57 Fe 0.01 O 3 compound has been studied with X-ray, neutron diffraction and Mossbauer spectroscopy. The sample had orthorhombic structure of Pnma symmetry. Mossbauer spectra showed that with lowering temperature of the sample, two magnetic phases were increased and finally, showed two sharp sextets of spectra at 15 K. Above 45 K, the outer sextet rapidly changed to paramagnetic phase. This result corresponded with the sudden change of magnetic peaks at same temperature region in neutron diffraction patterns.