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Influence of Ba–Cr substitution on structural, optical and magnetic properties of nanocrystalline BiFeO3 by Ping Tang; Ming Cao; Jian Yu; Lifang Wang; Deqin Zhang is a Materials Science article available to read on EtoBox.

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Bi 1-x Ba x Fe 1-y Cr y O 3 (BBFCO: x = 0, y = 0; x = 0.05, y = 0; x = 0, y = 0.05; x = 0.05, y = 0.05; x = 0.1, y = 0; x = 0, y = 0.1; x = 0.1, y = 0.1; x = 0.2, y = 0) nanoparticles were prepared by a simple cost effective ethylene glycol-based sol-gel technique. The calcination temperature was set at 600 °C for 120 min with a heating rate of 10 °C/min. Effects of Ba, Cr dopant on structural, optical and magnetic properties of BiFeO 3 (BFO) nanoparticles have been studied. Perovskite structure was confirmed by the metal-oxide absorption bands appeared at 559 cm -1 and 438 cm -1 in Fourier-transform infrared spectroscopy spectra, which are the characteristic bands of FeO 6 octahedral groups in perovskite structure. X-ray diffraction patterns confirmed that Barium (Ba) is an effective dopant to suppress the impurity phases in Cr-doped BFO. Phase transitions from rhombohedral to orthorhombic phase in all doped samples were verified by Rietveld refinement and Raman analysis. Rhombohedral, orthorhombic and tetragonal phases coexist in Bi 0.9 Ba 0.1 FeO 3 and Bi 0.8 Ba 0.2 FeO 3 , which can be ascribed to the serious lattice distortion due to high-level Ba doping. Well-crystalline BBFC

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Author

Ping Tang; Ming Cao; Jian Yu; Lifang Wang; Deqin Zhang

Publisher

Springer Science and Business Media LLC

Published

2021

Language

EN

Field

Materials Science (Physical Sciences)