Magnetic Property of Binary Ferrites. I

Enhancement of the Magnetic Properties for Co-Mn-Zn Ferrites

Aluminum substituted cobalt manganese zinc ferrite nanoparticles Co0.425Mn0.425Zn0.150AlxFe2-xO4 (from x= 0.0 to 0.15 with step 0.025) have been synthesized by chemical co-precipitation route. X-ray diffraction (XRD) and infrared spectroscopy (FTIR) revealed that the obtained powders have a single phase of cubic spinel structure. The crystallite sizes calculated from XRD data have been confirme...

Magnetic Phase Diagram of Ferrites with Selective Sublattice Dilution

The effect of magnetic field on the magnetic property of Agar/Fe3O4 nanocomposite

Agar/Fe3O4 nanocomposites were synthesized in the presence of an external magnetic field (~ 0.4 Tesla) and their characteristics were compared with the samples synthesized without considering the external magnetic field. In this study we used Fe2+ and Fe3+ for synthesizing Fe3O4 magnetic nanoparticles in the presence of agar as polymeric additive, by co-precipitation technique. Vibrating sample...

Dipolar Magnetic Anisotropy in Some Uniaxial Hexagonal Ferrites

Calculations for the magnetic dipolar contribution to the magnetic anisotropy of BaFeizOie and LaFeiiZnOie M-type and BaFerMn2Oil A-type hexagonal ferrites have been made. Our calculations take into account all the magnetic moments existing within a sphere with a radius of 118 1, from which good eonvergenee is reached. The results for there ferrite# suggest that the strong magnetic enisotropy i...

Site-Specified Magnetic States in Ferrites Probed by Magnetic Circular X-Ray Dichroism

To study magnetic states in ferrimagnetic Fe-oxides, we have measured magnetic circular x-ray dichroism at K-edge of Id-transition metal. The observed dichroic signals are separately assigned to the contribution come from 3d-cation in tetrahedral or octahedral sites. We discuss the magnetic states of 3d-metal ion in terms of local enviroment. Magnetic circular x-ray dichroism (MCXD is a powerfu...