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
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

Structural, Magnetic, and Electrical Properties of Al3+ Substituted CuZn-ferrites

doi: 10.1088/1674-0068/23/05/591-595
Funds:  We are grateful to Dr. S. Naseem, Dr. M. S. An-war and M. Saleem for their help in the experimental measurements and useful discussions.
  • Received Date: 2010-03-10
  • 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.
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Structural, Magnetic, and Electrical Properties of Al3+ Substituted CuZn-ferrites

doi: 10.1088/1674-0068/23/05/591-595
Funds:  We are grateful to Dr. S. Naseem, Dr. M. S. An-war and M. Saleem for their help in the experimental measurements and useful discussions.

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.

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
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

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