Exchange spring magnetic behavior in BaFe12O19/Fe3O4 nanocomposites

We report the investigation on exchange spring coupling behavior of BaFe12O19/Fe3O4 nanocomposite synthesized by simple mixing followed by heat treatment of individual ferrites. Morphologically tuned, well crystalline hard and soft ferrites were synthesized by simple chemical method and the phase composition, crystallinity, surface morphology and magnetic properties of the as prepared ferrites as well as the nanocomposites were studied by using XRD, FESEM and VSM respectively. Exchange coupling behavior is observed in the nanocomposite samples heated at 600 degrees C with simultaneous enhancements of (BH)(max) and remanence. (C) 2016 Elsevier B.V. All rights reserved.