Abstract
Barium monoferrite (BaFe2O4) was synthesized by citrate combustion method. The structural, magnetic properties as well as permittivity and permeability at microwave frequencies have been investigated and discussed in present paper. Formation of orthorhombic crystal structure was confirmed from the X-ray diffraction pattern. These polycrystalline samples sintered at different temperatures have higher Curie temperature (∼700 K) and coercivity (∼4000 Oe) as compared to the values reported in literature. Next to detailed structural and magnetic properties, also permittivity and permeability at X-band microwave frequencies were measured using cavity perturbation technique. The high and quite comparable values of dielectric constant and permeability make this material suitable for use as a microwave absorbing paint as well as a promising electromagnetic interference (EMI) shielding material.
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