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Abstract
Magnetic susceptibility and EPR measurements were made on a PbFe0.5Nb0.5O3 (PFN) ceramic between 77 and 600 K. A Néel temperature of 155 K was found and the anomalies near the ferroelectric Curie point were indicated by the magnetic susceptibility and EPR data. In PFN partly reduced by thermal treatment in high temperature (1070 K) EPR measurements proved only the presence of Fe3+ and Fe1+ ions while no trace was found of the non-Kramer's Fe2+ and Fe4+ ions.