Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure | Zendy

Maria Čebela | Zendy; Bojan Janković | Zendy; Radmila Hercigonja | Zendy; Miodrag J. Lukić | Zendy; Z. DohčevićMitrović | Zendy; Dušan Milivojević | Zendy; Branko Matović | Zendy

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Comprehensive characterization of BiFeO3 powder synthesized by the hydrothermal procedure

Author(s) -

Maria Čebela,

Bojan Janković,

Radmila Hercigonja,

Miodrag J. Lukić,

Z. DohčevićMitrović,

Dušan Milivojević,

Branko Matović

Publication year - 2016

Publication title -

processing and application of ceramics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.326

H-Index - 15

eISSN - 2406-1034

pISSN - 1820-6131

DOI - 10.2298/pac1604201c

Subject(s) - materials science , bismuth ferrite , crystallinity , high resolution transmission electron microscopy , electron paramagnetic resonance , hydrothermal circulation , stacking , bismuth , ion , crystallography , characterization (materials science) , ferrite (magnet) , chemical engineering , phase (matter) , octahedron , perovskite (structure) , transmission electron microscopy , crystal structure , nanotechnology , nuclear magnetic resonance , multiferroics , metallurgy , composite material , physics , optoelectronics , chemistry , organic chemistry , dielectric , engineering , ferroelectricity , quantum mechanics

In this paper, bismuth ferrite (BFO) particles synthesized by controlled hydrothermal process, where the particles of small sizes and with high purity were obtained. Structural analysis showed that non-annealed powder can be perfectly fitted to rhombohedral space group R3c and contains a very small amount of secondary phase, whereas the final product (annealed at 800 °C) represents single-phase perovskite powder with high crystallinity. HRTEM analysis confirmed existence of twin stacking faults, which are responsible for enhanced magnetic properties. EPR measurements suggested existence of electrons trapped by vacancies or defects. It has been proposed that existence of Fe3+ −OV defect complex could be generated at elevated temperatures followed by formation of trivalent Fe ions, which intensely provide local 3d moments

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