Exchange biasing and electric polarization with YMnO3

We report on the growth and functional characterizations of epitaxialthin films of the multiferroic YMnO3. We show that using Pt as a seed layer on SrTiO3(111) substrates, epitaxialYMnO3films (0001) textured are obtained. An atomic force microscope has been used to polarize electric domains revealin...

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Bibliographic Details
Authors: Martí Rovirosa, Xavier, Sánchez Barrera, Florencio|||0000-0002-5314-453X, Hrabovsky, D., Fábrega Sánchez, Lourdes, Ruyter, A., Fontcuberta, Josep|||0000-0002-7955-2320, Laukhin, Vladimir, Skumryev, Vassil|||0000-0003-1375-4824, García-Cuenca Varona, María Victoria, Ferrater Martorell, Cèsar, Varela Fernández, Manuel, 1956-, Vilà, A., Lüders, Ulrike Anne, Bobo, Jean-François
Format: article
Publication Date:2006
Country:España
Institution:Universitat Autònoma de Barcelona
Repository:Dipòsit Digital de Documents de la UAB
Language:English
OAI Identifier:oai:ddd.uab.cat:116108
Online Access:https://ddd.uab.cat/record/116108
https://dx.doi.org/urn:doi:10.1063/1.2234285
Access Level:Open access
Keyword:Ferroelectric materials
Epitaxy
Ozone
Atomic force microscopy
Exchange interactions
Ferromagnetic materials
Ferroelectric thin films
Thin film growth
X-ray diffraction
Polarization
Description
Summary:We report on the growth and functional characterizations of epitaxialthin films of the multiferroic YMnO3. We show that using Pt as a seed layer on SrTiO3(111) substrates, epitaxialYMnO3films (0001) textured are obtained. An atomic force microscope has been used to polarize electric domains revealing the ferroelectric nature of the film. When a Permalloy layer is grown on top of the YMnO3(0001)film, clear indications of exchange bias and enhanced coercivity are observed at low temperature. The observation of coexisting antiferromagnetism and electrical polarization suggests that the biferroic character of YMnO3 can be exploited in novel devices.

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