Fabrication, magnetic, and ferroelectric properties of multiferroic BiFeO3 hollow nanoparticles

Yi Du; Zhen Xiang Cheng; Shi Xue Dou; Darren Jon Attard; Xiao Lin Wang

doi:10.1063/1.3561377

Fabrication, magnetic, and ferroelectric properties of multiferroic BiFeO₃ hollow nanoparticles

Yi Du^*
, Zhen Xiang Cheng
, Shi Xue Dou
, Darren Jon Attard
, Xiao Lin Wang

^*Corresponding author for this work

University of Wollongong

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

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.

Original language	English
Article number	073903
Journal	Journal of Applied Physics
Volume	109
Issue number	7
DOIs	https://doi.org/10.1063/1.3561377
State	Published - 1 Apr 2011
Externally published	Yes

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title = "Fabrication, magnetic, and ferroelectric properties of multiferroic BiFeO3 hollow nanoparticles",

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.",

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T1 - Fabrication, magnetic, and ferroelectric properties of multiferroic BiFeO3 hollow nanoparticles

AU - Du, Yi

AU - Cheng, Zhen Xiang

AU - Xue Dou, Shi

AU - Attard, Darren Jon

AU - Lin Wang, Xiao

PY - 2011/4/1

Y1 - 2011/4/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/79955400109

U2 - 10.1063/1.3561377

DO - 10.1063/1.3561377

M3 - 文章

AN - SCOPUS:79955400109

SN - 0021-8979

VL - 109

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 7

M1 - 073903

ER -

Fabrication, magnetic, and ferroelectric properties of multiferroic BiFeO₃ hollow nanoparticles

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