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Frontiers of Physics

ISSN 2095-0462

ISSN 2095-0470(Online)

CN 11-5994/O4

Postal Subscription Code 80-965

2018 Impact Factor: 2.483

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Front. Phys.    2018, Vol. 13 Issue (5) : 136803    https://doi.org/10.1007/s11467-018-0819-6
RESEARCH ARTICLE
Ferroelectric polarization reversal tuned by magnetic field in a ferroelectric BiFeO3/Nb-doped SrTiO3 heterojunction
Pei Li1, Zhao-Meng Gao1, Xiu-Shi Huang1, Long-Fei Wang1, Wei-Feng Zhang1(), Hai-Zhong Guo1,2()
1. Henan Key Laboratory of Photovoltaic Materials, School of Physics and Electronics, Henan University, Kaifeng 475004, China
2. School of Physical Engineering, Zhengzhou University, Zhengzhou 450001, China
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Abstract

Interfacial resistive switching of a ferroelectric semiconductor heterojunction is highly advantageous for the newly developed ferroelectric memristors. Moreover, the interfacial state in the ferroelectric semiconductor heterojunction can be gradually modified by polarization reversal, which may give rise to continuously tunable resistive switching behavior. In this work, the interfacial state of a ferroelectric BiFeO3/Nb-doped SrTiO3 junction was modulated by ferroelectric polarization reversal. The dynamics of surface screening charges on the BiFeO3 layer was also investigated by surface potential measurements, and the decay of the surface potential could be speeded up by the magnetic field. Moreover, ferroelectric polarization reversal of the BiFeO3 layer was tuned by the magnetic field. This finding could provide a method to enhance the ferroelectric and electrical properties of ferroelectric BiFeO3 films by tuning the magnetic field.
Keywords ferroelectric semiconductor heterojunction      ferroelectric polarization reversal      pulsed laser deposition      Kelvin probe force microscopy     
Corresponding Author(s): Wei-Feng Zhang,Hai-Zhong Guo   
Issue Date: 06 August 2018
 Cite this article:   
Pei Li,Zhao-Meng Gao,Xiu-Shi Huang, et al. Ferroelectric polarization reversal tuned by magnetic field in a ferroelectric BiFeO3/Nb-doped SrTiO3 heterojunction[J]. Front. Phys. , 2018, 13(5): 136803.
 URL:  
https://academic.hep.com.cn/fop/EN/10.1007/s11467-018-0819-6
https://academic.hep.com.cn/fop/EN/Y2018/V13/I5/136803
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