Exploiting different morphologies of non-ferromagnetic interacting precursor’s for preparation of hexaferrite magnets

Sintered cold compacted hexaferrite magnets with appreciable magnetic properties and crystallite alignment were made from non-magnetic precursors without applying an external field. This work presents a novel approach employing non-ferromagnetic interacting comprising of platelet shaped six-line ferrihydrite needle goethite nanoparticles. A hydrothermal synthesis route was employed to produce ~5 nm thickness. Needle nanoparticles likewise prepared by apparent dimensions ~10 × 27 10 nm3 extracted X-ray powder diffraction data. The Rietveld modelling also revealed the presence amorphous phase in SrCO3 impurity. improves magnets, while retaining coercivity (Hc), contrast spark plasma sintering (SPS). non-ferromagnetically directly converted SrFe12O19 pressing them conventional compaction technique followed subsequent pellets. Decoupling step is interesting for industrial production magnets. displayed good combination saturation magnetization Ms = 70 Am2/kg Hc 297 kA/m some degree crystallites Mr/Ms 0.71. procedure exploits anisotropic shape using uniaxial pressure into aligned bulk Two sets at 900 °C held 2 h 1050 holding time 0 min. sintered subjected transmission pole figure analysis. texture index each pellet Employing actually enhanced magnet obtained only slightly improved when compared mixture