Structural, Magnetic, and Electrical Properties of Al3+ Substituted CuZn-ferrites
- Received Date: 2010-03-10
- Oxide material, Ferrite, Solid state reaction, Electrical resistivity, Dielectric constant
Abstract: Nanocrystalline Cu0.5Zn0.5Fe2-xAlxO2 (x=0.0, 0.1, 0.2, 0.3, 0.4, and 0.5) ferrite materials were synthesized using standard solid state reaction technique. The effects of Al3+ contents on the structural, electrical, and magnetic properties were investigated. Single phase cubic spinel structure was revealed by X-ray diffraction analysis. The crystallite size was evaluated considering the most intense diffraction peak (311) using Scherrer formula. Lattice constant decreased, whereas porosity increased with the increase in Al3+ concentration. The value of saturation magnetization decreased with increasing aluminum contents. Temperature dependent value of direct current electrical resistivity has been determined. It is observed that the substitution of Al3+ has significant impact on the dielectric constant, tangent of dielectric loss angle and dielectric loss factor. The variation in dielectric properties was attributed to space charge polarization.
|Citation:||S. M. Ramay, Saadat A. Siddiqi, S. Atiq, M. S. Awan, S. Riaz. Structural, Magnetic, and Electrical Properties of Al3+ Substituted CuZn-ferrites[J]. Chinese Journal of Chemical Physics , 2010, 23(5): 591-595. doi: 10.1088/1674-0068/23/05/591-595|