Abstract
A series of the ferrite system Co0.6Zn0.4MnxFe2-xO4 with (x = 0.7, 0.8, 0.9 and 1) were prepared by general ceramic method. The X-ray diffraction patterns confirmed the formation of the cubic single phase structure. The lattice parameter and the crystal size increased after irradiation which was attributed to the formation of ferrous ions of larger radius than that of ferrous ions in unirradiated samples. A small shift was observed in the diffraction peak position. This indicated the slight distortion of the cubic structure. The diffusion coefficient of electrons was found to be increased for the irradiated samples. The concentration of electrons was estimated and was found to be increased after ?-irradiation.
Highlights
Pressed into tablets of one cm diameter and thickness 0.2 cm
In ferromagnetic state the hopping electrons are oriented in one direction, which helps the electrons to jump from ferric to ferrous ions without scattering[2, 3]
The formation of spinel cubic phase was confirmed by X-ray diffraction patterns using Xray diffratometer type Philips, PW 1710
Summary
Pressed into tablets of one cm diameter and thickness 0.2 cm. Spinal ferrite is one of the most important classes of magnetic ceramic materials owing to their interesting applications. In the spinel structure the magnetic ions are distributed between two different lattice sites tetrahedral (A) and octahedral (B) sites. The magnetic as well as electrical properties of these ferrite depend on the relative distribution of cations at the different sites as well as the preparation conditions[1]. The formation of spinel cubic phase was confirmed by X-ray diffraction patterns using Xray diffratometer type Philips, PW 1710. After 2 days, the d.c conductivity was measured in the temperature range from room temperature to 310°C using an electrometer type Keithley 610 C
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