Comparative Study of Structure, FMR and Magnetic Properties of Nanocomposite and Mixture Ferrite.

Abstract

This investigation presents a design of 20% M-type BaFe12O19 hexaferrite as a core coated by 80% MgFe2O4 spinel ferrite as a shell (〖Mg〗_80-H_20) in addition to, a mixture of 80% MgFe2O4 spinel ferrite and 20% M-type BaFe12O19 hexa-ferrite powders. The spinel and nanocompsite ferrite materials were synthesized by uingthe wet mechano-chemical co-precipitation route. All prepared samples; spinel, nanocomposite and mixture are annealed at 1200 oC for 6 hours. The results of X-ray diffraction patterns, TEM images and the transmitted IR spectra revealed the formation of two different composite materials. The results of ferromagnetic resonance FMR spectra and magnetic hysteresis loops represents contrast between the nanocomposite structure and the mixed material of the same constitutes with the same ratio