Ferroelectric domain scaling and switching in ultrathin BiFeO 3 films deposited on vicinal substrates

Vilas Shelke, Dipanjan Mazumdar, Stephen Jesse, Sergei Kalinin, Arthur Baddorf, Arunava Gupta

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22 Scopus citations

Abstract

We report on electrically switchable polarization and ferroelectric domain scaling over a thickness range of 5-100 nm in BiFeO 3 films deposited on [110] vicinal substrates. The BiFeO 3 films of variable thickness were deposited with SrRuO 3 bottom layer using the pulsed laser deposition technique. The domains are engineered into preferentially oriented patterns due to substrate vicinality along the [110] direction. The domain width scales closely with the square root of film thickness, in agreement with the Landau-Lifschitz-Kittel (LLK) law. Switching spectroscopy piezo-response force microscopy provides clear evidence for the ferroelectric switching behavior in all the films.

Original languageEnglish
Article number053040
JournalNew Journal of Physics
Volume14
DOIs
StatePublished - May 2012

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