Pb(Fe1/2Nb1/2)O-3-Pb(Fe2/3W1/3)O-3 solid solutions were characterized by di
electric measurements at low frequencies and in the microwave rang and magn
etic measurements at high frequencies. The observed microwave dispersion wa
s tentatively attributed to the domain mechanism of polarization. The obtai
ned results suggest that the solid solutions studied are potential microwav
e-absorbing materials.