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

Abstract

Ferroelectric BiFeO3 thin films and artificial superlattices of (BiFeO3)m(SrTiO3)m (m~ 1 to 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 modification of ferroelectric domains through superlattice, could provide an additional control on engineering the domain wall mediated functional properties.

14 pages, To be published in J. Mag. Mag Mater. proceedings of EMRS 2008

References in corpus (7)

• Influence of parasitic phases on the properties of BiFeO3 epitaxial thin films
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Cited by in corpus (3)

• Constrained ferroelectric domain orientation in (BiFeO3)m(SrTiO3)n superlattice
• Pure phase BiFeO${}_3$ thin films sputtered over Si: A new route towards high magnetization
• The reversal of magnetization driven by the Dzyaloshinskii-Moriya interaction(DMI) in perovskite Bi2FeMnO6