A new ferromagnetic perovskite: LaMn1/2Rh1/2O3 Original Research Article

The new, ferromagnetic perovskite type oxide LaMn1/2Rh1/2O3 has been synthesized by conventional ceramic techniques. Rietveld refinements from X-ray diffraction data confirm a slight GdFeO3-type distortion and a disordered cation arrangement on the B-sites. The space group is Pnma (No. 62) with lattice parameters and DC magnetic measurements and hysteresis loops show ferromagnetic behavior at temperatures below 120 K. Due to domain effects divergences occur between zero-field-cooled and field-cooled magnetization curves at low fields. The anisotropy is investigated using AC techniques. Domains of short-range cationic order between MnII and RhIV lead to ferromagnetic properties.