Abstract
An electron paramagnetic resonance (EPR) study on the ferroelectromagnet Pb(Fe 1/2Nb 1/2)O 3 (PFN) powder is presented. The EPR spectra show one single broad line in the 300–90 K temperature range. The onset of the para-antiferromagnetic (AF) transition has been determined from the temperature dependence for three main parameters deduced from the EPR spectra: the g-factor, the peak-to-peak linewidth (Δ H pp) and the integrated intensity ( I EPR). Below 147 K, a weak ferromagnetic signal (WFS) is observed. This WFS is attributed to canting of Fe +3 ion sublattices in the AF matrix, and can be associated with the magnetoelectric effect in this material.
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