Probing Ferroelectric Domain Engineering in BiFeO3 Thin Films by Second Harmonic Generation

Morgan Trassin; Gabriele De Luca; Sebastian Manz; Manfred Fiebig

doi:10.1002/adma.201501636

Probing Ferroelectric Domain Engineering in BiFeO3 Thin Films by Second Harmonic Generation

Adv Mater. 2015 Sep 2;27(33):4871-6. doi: 10.1002/adma.201501636. Epub 2015 Jul 14.

Authors

Morgan Trassin¹, Gabriele De Luca¹, Sebastian Manz¹, Manfred Fiebig¹

Affiliation

¹ Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland.

PMID: 26175000
DOI: 10.1002/adma.201501636

Abstract

An optical probe of the ferroelectric domain distribution and manipulation in BiFeO3 thin films is reported using optical second harmonic generation. A unique relation between the domain distribution and its integral symmetry is established. The ferroelectric signature is even resolved when the film is covered by a top electrode. The effect of voltage-induced ferroelectric switching is imaged.

Keywords: BiFeO3; domains; ferroelectric; magnetoelectric; multiferroic; scanning probe microscopy; second harmonic generation.