151Eu and 57Fe Moessbauer effect studies of magnetic interactions in europium transition element oxides solution

The solid state solutions of europium transition element oxides Eu(Fe0.8M0.2)O3 (M=Sc, Cr, Mn, Co) are synthesized. The X-ray diffraction of the compound shows that all the compounds possess the perovskite structures. Both the 151Eu Moessbauer spectra and the 57Fe Moessbauer spectra are measured. The hyperfine magnetic field and non-axisymmetric electric field gradient are observed in the 151Eu Moessbauer spectrum. The 57Fe Moessbauer spectrum shows that there are four components of hyperfine fields corresponding to four kinds of different neighbours of the Fe ion. (orig.)