Role of Gd3+ concentration on the structure, transport and magnetic properties of (Ni-Ti) doped Mn-Zn nanocystalline ferrite [ READ ]
K. E. Rady
A system of general chemical formula Mn0.9Zn0.1(Ni-Ti)0.05GdyFe1.9-yO4; (0.0 = y = 0.05) were prepared using standard ceramic method. The structure of the prepared samples was indicated using XRD diffraction. The average crystallite size of the prepared samples was estimated using Scherrer's equation and ranged from 96 to 104nm. DC electrical resistivity of the prepared samples was measured at room temperature using the two probe method. The thermoelectric power measurements show n-type conduction for all the prepared samples. The substitution of Fe3+ ions by Gd3+ ions improves the physical properties by increasing resistivity and consequently decreasing the dielectric loss so, they can be used in the core transformers. Also, the effect of temperature on the initial magnetic permeability was studied. Finally the cation distribution of the prepared samples was assumed and the theoretical magnetic moment was also calculated and compared with the experimental one. The substitution by Gd3+ improves the physical properties of the prepared samples where the sample of y= 0.01 exhibits high resistivity, highest initial permeability.
K. E. Rady
A system of general chemical formula Mn0.9Zn0.1(Ni-Ti)0.05GdyFe1.9-yO4; (0.0 = y = 0.05) were prepared using standard ceramic method. The structure of the prepared samples was indicated using XRD diffraction. The average crystallite size of the prepared samples was estimated using Scherrer's equation and ranged from 96 to 104nm. DC electrical resistivity of the prepared samples was measured at room temperature using the two probe method. The thermoelectric power measurements show n-type conduction for all the prepared samples. The substitution of Fe3+ ions by Gd3+ ions improves the physical properties by increasing resistivity and consequently decreasing the dielectric loss so, they can be used in the core transformers. Also, the effect of temperature on the initial magnetic permeability was studied. Finally the cation distribution of the prepared samples was assumed and the theoretical magnetic moment was also calculated and compared with the experimental one. The substitution by Gd3+ improves the physical properties of the prepared samples where the sample of y= 0.01 exhibits high resistivity, highest initial permeability.
