The dielectric constant decreases due to the electronic exchange which arises because of the local
displacement of electrons in the direction of the applied electric field. This induces polarization in the
ferrite [28]. Figure (3b) shows a high dielectric loss initially, which decreases at higher frequencies. The
high loss can also be due to hopping conduction between Fe2+and Fe3+ions [29]. But a very low variation
in the dielectric constant is observed for the CuFe2O4.