Abstract
Article history : Nanocrystalline strontium hexaferrite (SrFe 12 O19 ) powders have been successfully synthesized using facile Co-preci pitation method. Ferrite precursors were obtained from mixtures of strontium and ferric chloride in an aqueous medium without any surfactant and soft template. The as-received powde rs were calcined at 800 and 1000 ˚C for 2 hours in air. The final powders were characterized by X-ray diffraction (XRD), scan ning electron microscopy (SEM), transmission electron microscopy (TEM), BET surface area analysis and Vibrating Sample Magnetometer (VSM). The effects of calcination temperature on phase com position, particle size and shape as well as magnetic propert ies of the products have been investigated. The results indica ted that higher calcination temperature (1000 o C) resulted in higher particle sizes (98.1 nm), maximum saturation magnetization (60.53 emu/g), remanence value (36.23 emu/g) and less surface area (12 m 2 g -1 ). The magnetocrystalline anisotropy constant, K, calc ulated from the Stoner-Wohlfarth theory, increases by increasing te mperature up to 15.1 (HA 2 /kg).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
