Local electronic structure analysis of Zn-doped BiFeO3 powders by X-ray absorption fine structure spectroscopy

Multiferroic BiFe1-xZnxO3 (0 ≤ x ≤ 0.1) powders were synthesized by a hydrothermal method. Structural studies using X-ray diffraction revealed that all samples possessed a rhombohedral R3c perovskite structure. Scanning electron microscopy showed that the average grain size decreased slightly with i...

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Bibliographic Details
Published in:Journal of alloys and compounds 2017-07, Vol.710, p.843-849
Main Authors: Gholam, Turghunjan, Ablat, Abduleziz, Mamat, Mamatrishat, Wu, Rong, Aimidula, Aimierding, Bake, Muhammad Ali, Zheng, Lirong, Wang, Jiaou, Qian, Haijie, Wu, Rui, Ibrahim, Kurash
Format: Article
Language:English
Subjects:
Absorption
Atomic structure
BiFeO3
Bismuth ferrite
Electromagnetism
Electronic structure
Ferromagnetism
Fine structure
Hydrothermal method
Hysteresis loops
Infrared analysis
Inorganic chemistry
Perovskite structure
Scanning electron microscopy
Semiconductor doping
Spectrum analysis
Thermodynamics
X-ray absorption fine structure
Zinc
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Summary:Multiferroic BiFe1-xZnxO3 (0 ≤ x ≤ 0.1) powders were synthesized by a hydrothermal method. Structural studies using X-ray diffraction revealed that all samples possessed a rhombohedral R3c perovskite structure. Scanning electron microscopy showed that the average grain size decreased slightly with increasing Zn concentration. Fe K-edge and Bi L3-edge X-ray absorption fine structure spectra indicated that both the Fe and Bi ions had a +3 valence state in all samples. The local electronic structure of the center atoms was affected by Zn doping. Fourier transform infrared analysis revealed the characteristic vibrations of the obtained BiFe1-xZnxO3 (0 ≤ x ≤ 0.1) samples. Magnetic hysteresis loop measurements indicated a maximum remnant magnetization (Mr) for the x = 0.025 sample, which was primarily a result of the Fe3+-O-Zn2+ anti-ferromagnetic exchange interaction. •Multiferroic BiFe1-xZnxO3 composites were prepared by hydrothermal method.•Zn doping resulted in decreased grain size.•Local electronic structure was studied by X-ray absorption fine structure.•Large remnant magnetization was observed when x = 0.025.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2017.03.242