Magnetic properties enhancement of M-Ba ferrites embedded in a SiO2 matrix Article uri icon


  • M-Ba ferrite powders prepared by the coprecipitation method were embedded, using the sol-gel technique, in an inert silica xerogel matrix. Samples were analysed by X-ray diffraction and vibrating sample magnetometry. We compare the magnetic and structural properties of pure ferrite samples and those embedded in the inorganic matrix. The mixed samples had a proportion of 30%25 BaFe12O19:70%25 SiO2 in weight. We observed an enhancement of the coercive force in ferrite powders, embedded in the SiO2 matrix, accompanied by a decrease of the saturation magnetization, with respect to pure samples. © 2002 Elsevier Science B.V. All rights reserved.

publication date

  • 2002-01-01