Stoichiometric balancing of bismuth ferrite-perovskite nanoparticles: comparative investigations on biogenic versus conventional chemical synthesis

• Published in: Journal of materials science. Materials in electronics Vol. 34; no. 30; p. 2034
• Main Authors: Kay, S. Jasmine Jecintha, Chidhambaram, N., Thirumurugan, Arun, Shanavas, Shajahan, Sakthivel, P., Rimal Isaac, R. S.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.10.2023; Springer Nature B.V
• Subjects: Aldehydes; Alkanes; Bismuth; Bismuth ferrite; Bonding strength; Characterization and Evaluation of Materials; Chemical synthesis; Chemistry and Materials Science; Comparative studies; Compensation; Electrons; Ferromagnetism; Materials Science; Nanoparticles; Optical and Electronic Materials; Perovskites; Photoelectrons; Room temperature; Spectroscopic analysis; Spectrum analysis; Stoichiometry; Valence; X ray photoelectron spectroscopy
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-023-11486-4

This work signifies the comparative study of physicochemical features of perovskite bismuth ferrite (P-BiFeO 3 ) nanoparticles synthesized via the chemical coprecipitation and Azadirachta indica (neem)-mediated biogenic methods. The X-ray diffraction analysis of the P-BiFeO 3 corroborates the biogenic (B-BFO) sample requires no non-stoichiometric compensation, whereas the chemical (C-BFO) sample experiences volatile bismuth nitrate compensation. The C-BFO and B-BFO samples exhibit bandgap values of 2.14 and 2.10 eV, respectively. The strong bonds related to P-BiFeO 3 and the existence of alkanes and aldehydes of C–H bonds in the green-mediated sample were confirmed using FTIR spectroscopy. X-ray photoelectron spectroscopy study confirms that the Bi and Fe elements exist in the 3 + valence state in the P-BiFeO 3 , which is of 3:3 perovskite type in both samples. The FESEM analysis of B-BFO and C-BFO samples reveals sporadic-spherical shape morphology. The B-BFO and C-BFO samples, in an applied magnetic field, at room temperature display weak ferromagnetism. The production of perovskite BiFeO 3 via the biogenic approach will pave the way for next-level clean practical devices.