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Paper Title : Structural, morphological and magnetic properties of M-type strontium hexaferrite synthesized via sol-gel auto combustion technique

ISSN : 2395-1303
Year of Publication : 2022
10.5281/zenodo.7334364

Authors: Ravil R. Bhosale, D. R. Shengule, K. M. Jadhav

         


Abstract
Strontium hexaferrite nanoparticles with the composition SrNixZrxFe12-2xO19 (where x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) have been successfully synthesized via sol-gel auto combustion technique. The structural characterizations were systematically investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The X-ray diffraction results showed that the crystallite size obtained is in the range of 36-47 nm. The lattice constant ‘a’ almost remains constant while ‘c’ increases as Ni-Zr concentration ‘x’ increases. The other parameters like cell volume, X-ray density, bulk density and porosity have also been calculated. Scanning electron microscopy (SEM) showed that most of the particles formed had hexagonal structure and energy dispersive spectroscopy (EDS) confirmed that the composition obtained is near stoichiometric. Magnetization measurements at room temperature were performed using vibrating sample magnetometer (VSM) technique. The values of saturation magnetization (Ms), remenanace magnetization (Mr) and magneton number (nB) increases up to x = 0.8 and then decreases for higher substitution while coercivity (Hc) decreases continuously as Ni-Zr content increases.

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Keywords
— Strontium ferrite, Sol-Gel auto combustion, SEM, XRD, Magnetic properties.