Magnetic and dielectric properties of pure and doped barium hexaferrite nanoparticles at microwave frequencies

• Published in: Physica status solidi. A, Applications and materials science Applications and materials science, 2009-02, Vol.206 (2), p.270-275
• Main Authors: Dimri, Mukesh C., Stern, R., Kashyap, Subhash C., Bhatti, K. P., Dube, D. C.
• Format: Article
• Language: English
• Subjects: 61.46.Df; 75.50.−y; 77.22.Ch; 78.60.Gq; 81.20.Ka; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Dielectric properties of solids and liquids; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Exact sciences and technology; Magnetic properties and materials; Magnetic properties of nanostructures; Materials science; Nanopowders; Nanoscale materials and structures: fabrication and characterization; Permittivity (dielectric function); Physics
• ISSN: 1862-6300; 0031-8965; 1862-6319
• DOI: 10.1002/pssa.200824381

Preparation of barium hexaferrite nanoparticles by chemical route and investigations of their dielectric and magnetic properties at microwave frequencies (8–12 GHz) are reported in the present paper. Measurements of these properties were carried out at microwave frequencies by using a cavity perturbation technique. It is observed that the values of the permittivity and permeability of nanoparticles are lower than the corresponding values for the bulk material. The effects of particle size, calcination temperature and compositional dependence on structural, microstructural and magnetic properties are also discussed. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)