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Published in:
22-01-2019
Study of electrical, dielectric and magnetic properties of Dy-Co bi-substituted strontium hexaferrite nanoparticles
Published in: Journal of Materials Science: Materials in Electronics | Issue 5/2019
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Abstract
Herein we report the electrical and magnetic properties of Dy-Co bi-substituted strontium hexagonal nanoferrites Sr1−xDyxFe12−yCoyO19 (Dy = 0.00–0.15, Co = 0.00–0.60) synthesized by sol–gel combustion method. The XRD analysis revealed formation of the magnetoplumbite phase of nanoferrites with average crystallite size ranging 35–50 nm. Electrical resistivity of synthesized nanoferrites lies in the range of 19×109 to 37×109 Ωcm. Beneficial from Dy-Co co-dopants, the synthesized nanoferrites exhibited very low dielectric losses (up to 0.28 at 1 MHz) together with high coercivity and magnetization (~ 188.4 KA/m and ~ 68 KA/m, respectively). Our study provides a general idea to prepare highly resistive nanoferrite magnets; which offer possibilities for designing components of magnetic recording media and conductors for various technological applications.