Issue 99, 2014
From the journal:

RSC Advances

Effects of Ba0.7Sr0.3TiO3-based buffer layers and La/Mn doping on the crystallization behavior and multiferroic properties of BiFeO3 thin films

Bin Li,a   Chunqing Wang,*ab   Guangbin Dou*c  and  Zhenbin Wangd  

* Corresponding authors

a State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China
E-mail: wangcq@hit.edu.cn

b Key Laboratory of Micro-systems and Micro-structures Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150080, China

c Electrical and Electronic Engineering, Imperial College London, London SW7 2AZ, UK
E-mail: g.dou@imperial.ac.uk

d Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China

Abstract

A detailed study of the BiFeO3 (BFO)-based bilayer films with improved multiferroic properties is reported. The BFO film without any impurity phase was obtained using Ba0.7Sr0.3TiO3 (BSTO) as a buffer layer. And the leakage currents of the bilayer film were found to reduce effectively through La and Mn co-doping of the BFO Layer. Moreover, magnetodielectric response and ferroelectric domains were observed in the Bi0.9La0.1Fe0.95Mn0.05O3 (BLFMO)/BSTO film. We additionally investigated the effects of the BSTO–Ni0.8Zn0.2Fe2O4 (NZFO) buffer layer on the multiferroic performances and surface morphology of the BLFMO film. It was found that the BSTO–NZFO composite film could significantly enhance the magnetic and magnetodielectric properties of the BLFMO film. In particular, the BLFMO/BSTO–NZFO film possessed a higher coercivity value as compared to the BLFMO/BSTO film.

Graphical abstract: Effects of Ba0.7Sr0.3TiO3-based buffer layers and La/Mn doping on the crystallization behavior and multiferroic properties of BiFeO3 thin films

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Article information

DOI
https://doi.org/10.1039/C4RA07492K
Article type
Paper
Submitted
23 Jul 2014
Accepted
20 Oct 2014
First published
21 Oct 2014

RSC Adv., 2014,4, 55889-55896

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Effects of Ba0.7Sr0.3TiO3-based buffer layers and La/Mn doping on the crystallization behavior and multiferroic properties of BiFeO3 thin films

B. Li, C. Wang, G. Dou and Z. Wang, RSC Adv., 2014, 4, 55889 DOI: 10.1039/C4RA07492K

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