Electrical properties of ϒ-irradiation on nano composite ferrites: Radar systems and microwave application - Tapa blanda

Sinopsis

Ferrimagnetic ceramics exhibits spontaneous magnetization in the absence of an external field consists of self-saturated domains and show the characteristics hysteresis behavior. A remarkable property of ferrite is the combination of extension magnetic parameters such as high permeability, small coercive force, high saturation magnetization and low hysteresis loss. Ferrites have higher resistances than ferromagnetic material by several orders of magnitude. The dielectric dispersion with frequency was observed and successfully explained on the basis of Maxwell-Wagner theory of interfacial polarization in consonance with the Koops phenomenological theory. The lower value of dielectric loss for a sample having equal concentrations Zn2+ dopant and Ni2+ host material makes them suitable material for electromagnetic interference suppression, telecommunication, radar systems and microwave application. The high D.C. resistivity and conductivity are the desired characteristics of NiFe2O4: Zn nanoparticles used to prepare Ferro Fluids and magnetic coating.

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