Abstract
Abstract Surface modification of nanocrystalline NiFe 2 O 4 spinel particles with amorphous SiO 2 by the sol–gel process at 350 °C was demonstrated. Amorphous phase of the SiO 2 layer was evaluated by X-ray diffraction technique. Structural coordination of the pristine and SiO 2 coated NiFe 2 O 4 particles as investigated by employing FTIR analysis. Thickness of the SiO 2 layer was investigated through transmission electron microscopy and it was identified to be ∼10–23 nm over nanocrystalline NiFe 2 O 4 particles. The magnetic behavior of pristine and surface modified NiFe 2 O 4 particles were investigated using vibrating sample magnetometer (VSM). Magnetic studies showed the retention of magnetic property of surface modified NiFe 2 O 4 particles with the reduced saturation magnetization and coercivity compared to the pristine NiFe 2 O 4 particles, which is respectively due to the lower fraction of the magnetic component and the formation of interfacial structure.
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.
