Abstrait

Effect Of Gamma Irradiation On The Structural And Electrical Properties Of Co0.5Zn0.5CeyFe2-yO4

E.Ateia

The effect of γ - irradiation on structural and electrical properties of rare earth ferrite of the general formula Co0.5Zn0.5CeyFe2-yO4 ( 0.0≤y≤ 0.2) was discussed. X- ray diffraction pattern of irradiated and un- irradiated samples showed the formation of cubic spinel structure. The obtained data show that electrical conductivity ln σ as well as the dielectric constant ε‘ are highly dependent on both Ce ion concentration and radiation dose. The number of ferrous ion at octahedral sites play a dominant role in the change of the crystal size due to irradiation effect. All samples exhibit a change in slope of the conductivity versus inverse temperature giving two regions with different conduction mechanisms.