Ferroelectric domain scaling and switching in ultrathin BiFeO3films deposited on vicinal substrates | Zendy

Vilas Shelke | Zendy; Dipanjan Mazumdar | Zendy; Stephen Jesse | Zendy; Sergei V. Kalinin | Zendy; Arthur P. Baddorf | Zendy; Arunava Gupta | Zendy

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Ferroelectric domain scaling and switching in ultrathin BiFeO₃films deposited on vicinal substrates

Author(s) -

Vilas Shelke,

Dipanjan Mazumdar,

Stephen Jesse,

Sergei V. Kalinin,

Arthur P. Baddorf,

Arunava Gupta

Publication year - 2012

Publication title -

new journal of physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.584

H-Index - 190

ISSN - 1367-2630

DOI - 10.1088/1367-2630/14/5/053040

Subject(s) - ferroelectricity , vicinal , pulsed laser deposition , polarization (electrochemistry) , scaling , condensed matter physics , thin film , substrate (aquarium) , physics , optics , optoelectronics , materials science , nanotechnology , dielectric , chemistry , geometry , mathematics , oceanography , quantum mechanics , geology

We report on electrically switchable polarization and ferroelectric domain scaling over a thickness range of 5-100nm in BiFeO3 films deposited on (110) vicinal substrates. The BiFeO3 films of variable thickness were deposited with SrRuO3 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.

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