NDLI: Preparation of nanocrystalline BiFeO$_{3}$ via a simple and novel method and its kinetics of crystallization

Content Provider	Springer Nature Link
Author	Wu, Xuehang Wu, Wenwei Cui, Xuemin Liao, Sen
Copyright Year	2011
Abstract	The precursor of nanocrystalline BiFeO$_{3}$ was obtained by solid-state reaction at low heat using Bi(NO$_{3}$)$_{3}$·5H$_{2}$O, FeSO$_{4}$·7H$_{2}$O, and Na$_{2}$CO$_{3}$·10H$_{2}$O as raw materials. The nanocrystalline BiFeO$_{3}$ was obtained by calcining the precursor. The precursor and its calcined products were characterized by differential scanning calorimetry (DSC), Fourier transform-infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and vibrating sample magnetometer (VSM). The data showed that highly crystallization BiFeO$_{3}$ with rhombohedral structure (space group R3c (161)) was obtained when the precursor was calcined at 873 K for 2 h. The thermal process of the precursor experienced three steps, which involve the dehydration of adsorption water, hydroxide, and decomposition of carbonates at first, and then crystallization of BiFeO$_{3}$, and at last decomposition of BiFeO$_{3}$ and formation of orthorhombic Bi$_{2}$Fe$_{4}$O$_{9}$. The mechanism and kinetics of the crystallization process of BiFeO$_{3}$ were studied using DSC and XRD techniques, the results show that activation energy of the crystallization process of BiFeO$_{3}$ is 126.49 kJ mol$^{−1}$, and the mechanism of crystallization process of BiFeO$_{3}$ is the random nucleation and growth of nuclei reaction.
Starting Page	625
Ending Page	632
Page Count	8
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	107
Issue Number	2
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-03-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	BiFeO$_{3}$ Nanocrystalline Crystallization process Kinetics Solid-state reaction at low heat Measurement Science and Instrumentation Polymer Sciences Inorganic Chemistry Physical Chemistry Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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