Electrical and magnetic properties of barium hexaferrite nanoparticles prepared by citrate precursor method

Ferromagnetic nanomaterials are of particular interest, because at nanoscale a crystallite can exhibit a single magnetic domain. These nanomaterials therefore exhibit different magnetic properties as compared to bulk. Recently, barium ferrite has gained importance due to its potential use in magnetic recording and in microwave devices. Barium ferrite nanoparticles are prepared by the citrate precursor method by varying the pH of the solution and calcination temperature. The effect of particle size and capping reagent on the structural, dielectric and magnetic properties of the resulting barium hexaferrite particles has been studied, and reported in the present paper. (C) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.