FisMat2017 - Submission - View

Abstract's title: Transport properties and polarization effects in ferromagnetic-ferroelectic bilayers using manganite thin films
Submitting author: Aleksandr Petrov
Affiliation: IOM-CNR
Affiliation Address: Area Science Park - Basovizza Strada Statale 14 km 163,5 - 34149 Trieste
Country: Italy
Oral presentation/Poster (Author's request): Poster
Other authors and affiliations: G.Vinai (Laboratorio TASC, IOM-CNR, S.S. 14 km 163.5, Basovizza, I-34149 Trieste, Italy), P. Torelli (Laboratorio TASC, IOM-CNR, S.S. 14 km 163.5, Basovizza, I-34149 Trieste, Italy), G.Panaccione (Laboratorio TASC, IOM-CNR, S.S. 14 km 163.5, Basovizza, I-34149 Trieste, Italy), G.Rossi (Laboratorio TASC, IOM-CNR, S.S. 14 km 163.5, Basovizza, I-34149 Trieste, Italy; Università degli Studi di Milano, Dipartimento di Fisica, Via Celoria 16 I-20133 Milano, Italy) and B.A.Davidson (Laboratorio TASC, IOM-CNR, S.S. 14 km 163.5, Basovizza, I-34149 Trieste, Italy; Temple University, Philadelphia PA, USA)
Abstract

Engineering the multiferroic coupling between ferromagnetic and ferroelectric layers depends on interfacial effects that can influence the magnetic properties of very thin ferromagnetic films. In certain conditions, the ferroelectric polarization charge at the surface of a ferroelectric film can induce changes in carrier density sufficient to shift position on the phase diagram from ferromagnetic to antiferromagnetic or insulating regions, providing modulation of ferromagnetism by an electric field. We present results for bilayers La1-xBaxMnO3/BaTiO3 (0.1 < x < 0.6) grown by Molecular Beam Epitaxy on DyScO3 substrates. Transport properties of single films of LBMO of different thicknesses (from 10 to 20uc) and in bilayers with ferroelectric BTO were measured, and are correlated with the magnetic state of the LBMO.