Abstract
In this paper, BiFe1−xNixO3 (x=0, 0.05, 0.10, 0.15, 0.20, and 0.25) nanoparticles were synthesized by a sol–gel process X-ray diffraction (XRD), and Raman technique analysis showed that a rhombohedrally distorted BiFeO3 structure with compressive lattice distortion induced by the Ni substitution at Fe sites. Superconducting QUantum Interference Device (SQUID) results showed that, compared with BiFeO3 prepared under similar conditions, the magnetic properties were significantly enhanced at room temperature. The enhanced ferromagnetism was attributed to the size confinement effect of the nanostructures, the ferromagnetic exchange between the neighboring Fe3+ and Ni3+ ions, and the changing of the Fe–O–Fe bond angle. Superparamagnetism with blocking temperature of 10K for BiFe0.95Ni0.05O3, 75K for BiFe0.85Ni0.15O3, 125K for BiFe0.80Ni0.20O3, and 200K for BiFe0.75Ni0.25O3 was also observed.
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.