Abstract
-
The dielectric constant and loss of perovskite DyMn1xFexO3 samples show strong dispersion in
various frequencies, which is indicative of relaxation. The activation energies were obtained
through Arrhenius law fitting and range from 0.213 eV to 0.385 eV. The Fe content dependence of
the characteristic frequency f0 and the activation energy Ea shows two transitions that are well
consistent with the change in orbital ordering. Meanwhile, different magnetic orderings could
affect the relaxation and induce the change in Ea