Probing of local ferroelectricity in BiFeO3 thin films and (BiFeO3)m(SrTiO3)m superlattices

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:321

Article; Proceedings Paper

Ranjith, R.¹  Lueders, U.¹  Prellier, W.¹  Da Costa, A.²  Dupont, I.²  Desfeux, R.² 

[1] ENSICAEN, UMR 6508, CNRS, Lab CRISMAT, F-14050 Caen, France

[2] Univ Artois, CNRS, UMR 8181, Unite Catalyse & Chim Solide,Fac Sci Jean Perrin, F-62307 Lens, France

关键词: Multiferroics;    BiFeO3;    Ferroelectricity;    Ferroelectric domains;    Thin films;    PFM;   

DOI  :  10.1016/j.jmmm.2009.02.116

来源: Elsevier

【 摘 要 】

Ferroelectric BiFeO3 thin films and artificial superlattices of (BiFeO3)(m)(SrTiO3)(m) (m similar to 1-10 unit cells) were fabricated on (001)-oriented SrTiO3 substrates by pulsed laser ablation. The variation of leakage current and macroscopic polarization with periodicity was studied. Piezo force microscopy studies revealed the presence of large ferroelectric domains in the case of BiFeO3 thin films while a size reduction in ferroelectric domains was observed in the case of superlattice structures. The results show that the modi. cation of ferroelectric domains through superlattice could provide an additional control on engineering the domain wall mediated functional properties. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.Elsevier

【 授权许可】

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