Abstract
We report the study of CoFe2O4 with biopolymers (chitosan and dextran), synthesized via a solvothermal method. The formation of the CoFe2O4 spinel phase has been validated using XRD and Rietveld analyses. The pattern of polyhedral and spherical shapes was observed for uncoated and coated samples using TEM. Mössbauer's study revealed the mixed spinel nature of the nanoparticles, in which Fe3+ and Co2+ ions are distributed in both tetrahedral and octahedral sites. The M − H curves obtained at ambient temperature show the typical ferromagnetic behavior for all the magnetic nanoparticles. The surface modification influences the specific loss power (SLP) value of the magnetic nanoparticles. Furthermore, our study revealed that dipole-dipole interactions are responsible for the self-heating behavior. SLP values demonstrated non-monotonic behavior for all the nanoparticle samples, implying that both Néel and Brownian relaxation is the responsible for heat generation in a high viscosity medium.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.