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

A detailed study of the BiFeO 3 (BFO)-based bilayer films with improved multiferroic properties is reported. The BFO film without any impurity phase was obtained using Ba 0.7 Sr 0.3 TiO 3 (BSTO) as a buffer layer. And the leakage currents of the bilayer film were found to reduce effectively through...

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Main Authors: Li, Bin, Wang, Chunqing, Dou, Guangbin, Wang, Zhenbin
Format: Article
Language:English
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Summary:A detailed study of the BiFeO 3 (BFO)-based bilayer films with improved multiferroic properties is reported. The BFO film without any impurity phase was obtained using Ba 0.7 Sr 0.3 TiO 3 (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 Bi 0.9 La 0.1 Fe 0.95 Mn 0.05 O 3 (BLFMO)/BSTO film. We additionally investigated the effects of the BSTO-Ni 0.8 Zn 0.2 Fe 2 O 4 (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. A detailed study of the BiFeO 3 -based bilayer films with improved multiferroic properties is reported.
ISSN:2046-2069
DOI:10.1039/c4ra07492k