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Ferroelectrics Volume 536, 2018 - Issue 1
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Articles

Effect of annealing temperature on crystalline structure and domains configuration of BiFeO3 films

Junxiang HaoSchool of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, Chongqing, China; View further author information
,
Fei ChenSchool of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, Chongqing, China; View further author information
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Chunlin FuSchool of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, Chongqing, China; ;Chongqing Key Laboratory of Nano-Micro Composite Materials and Devices, Chongqing, ChinaCorrespondence[email protected]
View further author information
,
Wei CaiSchool of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, Chongqing, China; ;Chongqing Key Laboratory of Nano-Micro Composite Materials and Devices, Chongqing, ChinaView further author information
,
Yuanyang SunSchool of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, Chongqing, China; View further author information
,
Yao ChenSchool of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, Chongqing, China; View further author information
&
Fengqi WangSchool of Metallurgical and Materials Engineering, Chongqing University of Science and Technology, Chongqing, China; View further author information
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Pages 122-131 | Received 17 Oct 2018, Accepted 08 Jul 2018, Published online: 19 Mar 2019
 
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Abstract

The BiFeO3 (BFO) thin films were prepared on Pt(111)TiO2/SiO2/Si substrates by the sol-gel method at different annealing temperatures. The crystalline structure and domain configuration of BFO films have been investigated by X-ray diffraction and piezoelectric force microscope (PFM), respectively. From the X-ray patterns, there are less impurity peaks when the BFO films are annealed at 600 °C. From the PFM images, the polarization is random and the grain size decreases with the increasing of annealing temperature. It is found that the possibility of single-domain grain formation increased with the decreasing of grain size, and the biggest single-domain grains is about 200 nm in diameter. Besides, a typical domain wall is observed, and it is 71° or 109°.

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Funding

This work was supported by the Program for Innovation Teams in University of Chongqing (Grant No. CXTDX201601032).

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