Electron spin resonance studies of Bi1-xScxFeO3 nanoparticulates: Observation of an enhanced spin canting over a large temperature range. (December 2017)

• Record Type: Journal Article
• Authors: Titus, S.; Balakumar, S.; Sakar, M.; Das, J.; Srinivasu, V.V.
• Is Part Of: Solid state communications. Volume 268(2017)
• Page Start: 61
• Page End: 63
• Publication Date: 2017-12
• Subjects: A. Bismuth Ferrite -- C. Electron spin resonance -- C. Magneto crystalline anisotropy -- C. Spin canting; Solid state chemistry -- Periodicals; Solid state physics -- Periodicals; Chimie de l'état solide -- Périodiques; Physique de l'état solide -- Périodiques; 530.41
• DOI: 10.1016/j.ssc.2017.08.006
• Languages: English
• ISSNs: 0038-1098

Abstract

Abstract: Bi1- x Sc x FeO3 ( x = 0.0, 0.1, 0.15, 0.25) nano particles were synthesized by sol gel method. We then probed the spin system in these nano particles using electron spin resonance technique. Our ESR results strongly suggest the scenario of modified spin canted structures. Spin canting parameter Δg/g as a function of temperature for Scandium doped BFO is qualitatively different from undoped BFO. A broad peak is observed for all the Scandium doped BFO samples and an enhanced spin canting over a large temperature range (75–210 K) in the case of x = 0.15 doping. We also showed that the asymmetry parameter and thereby the magneto-crystalline anisotropy in these BSFO nanoparticles show peaks around 230 K for ( x = 0.10 and 0.15) and beyond 300 K for x = 0.25 system. Thus, we established that the Sc doping significantly modifies the spin canting and magneto crystalline anisotropy in the BFO system.