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Low Temperature Synthesis, Structural, Optical and Magnetic Properties of Bismuth Ferrite Nanoparticles
Author(s) -
Srivastav Simant Kumar,
S. Gajbhiye Namdeo
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05411.x
Subject(s) - materials science , raman spectroscopy , bismuth ferrite , rietveld refinement , differential thermal analysis , analytical chemistry (journal) , nanoparticle , absorption spectroscopy , transmission electron microscopy , band gap , spectroscopy , crystal structure , crystallography , chemistry , nanotechnology , diffraction , ferroelectricity , optics , optoelectronics , multiferroics , physics , chromatography , quantum mechanics , dielectric
Phase pure nanosized BiFeO 3 ( BFO ) powder was synthesized by sol–gel method based on the propylene glycol‐gel reaction. The formation mechanism, crystal structure, magnetic and optical properties were investigated by thermogravimetry, differential thermal analysis, infrared spectroscopy, X –ray diffractometry, Rietveld analysis, Raman spectroscopy, transmission electron microscopy, SQUID magnetometry and ultraviolet–visible spectroscopy. X –ray diffraction and Raman studies revealed the formation of pure and well‐crystallized BFO nanocrystallites at a low temperature of 400°C. The BFO nanoparticles showed weak ferromagnetic property at room temperature due to size‐confinement effects. The UV –visible spectra showed strong band‐gap absorption at ~590 nm (2.1 eV) for BFO nanoparticles suggesting their potential application as visible‐light‐response photocatalyst.