title: Probing Ferroelectric Domain Engineering in BiFeO3 Thin Films by Second Harmonic Generation.
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.
authors.affiliation: Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland.
authors.forename: Morgan
authors.initials: M
authors.lastname: Trassin
authors.affiliation: Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland.
authors.forename: Gabriele De
authors.initials: GD
authors.lastname: Luca
authors.affiliation: Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Manz
authors.affiliation: Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 4, 8093, Zurich, Switzerland.
authors.forename: Manfred
authors.initials: M
authors.lastname: Fiebig
keywords: BiFeO3; domains; ferroelectric; magnetoelectric; multiferroic; scanning probe microscopy; second harmonic generation