Title
Fabrication, magnetic, and ferroelectric properties of multiferroic BiFeO3 hollow nanoparticles
Document Type
Journal Article
RIS ID
37730
Abstract
Hollow BiFeO3 nanoparticles were synthesized by an electrospray route for the first time. The phase purity and structure have been investigated by x-ray diffraction and Raman spectroscopy. Transmission and scanning electron microscope investigations revealed that the as-obtained BiFeO3 hollow spheres were polycrystalline, with a shell thickness of 35 nm. The formation mechanism can be possibly explained by Ostwald ripening. Raman spectra have verified decreased vibrational frequencies in BiFeO3 nanoparticles. These hollow and core-shell multiferroic nanoparticles exhibit significantly enhanced ferromagnetism from 5 to 600 K due to a broken spiral spin structure. The ferroelectricity of hollow BiFeO3 particles exhibits a lower switching electric field, which is confirmed by Kelvin probe force microscopy.
Publication Details
Du, Y., Cheng, Z., Dou, S. Xue., Attard, D. J. & Wang, X. (2011). Fabrication, magnetic, and ferroelectric properties of multiferroic BiFeO3 hollow nanoparticles. Journal of Applied Physics, 109 (7), 073903-1-073903-5.