The spectra of the dielectric constant and dielectric loss in nanostru
ctured gamma-Fe2O3 have been measured by using the ac LRC method. The
relaxation time of polarization and the conductance have also been cal
culated by means of the Debye mechanism, and Mo kinds of polarization
processes with two different relaxation times have been proposed. (C)
1997 Acta Metallurgica Inc.