Abstract
The origin of the room-temperature ferromagnetism of Bi(Fe1−xCox)O3 (x=0, 0.05) has been investigated by X-ray Absorption Fine Structure (XAFS) and Soft X-ray Absorption Spectroscopy (SXAS). The results of XAFS data indicate that partial Fe cations occupy Bi-sites of lattices and the dopant Co cations occupy Fe-sites. The existence of divalent Fe2+ ions in this system is detected. The O1s core level SXAS spectra indicate the crystal field split energy for x=0.05 sample is larger than that for x=0 sample, which means a structural distortion. The origin of ferromagnetism in both samples is related to the existence of Fe2+ ions, crystal lattice distortion and occupation of Fe ions. To the enhancement of saturated magnetizations in the Co-doped sample, the existence of Fe2+ ions is not the dominant factor, while the crystal lattice distortion due to partial Fe ions occupying at Bi-sites plays an important role.
Sign-in/Register to access full text options 
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.
