Universitat Autònoma de Barcelona
Martí Rovirosa, Xavier
Sánchez Barrera, Florencio
Hrabovsky, D.
Fábrega Sánchez, Lourdes
Ruyter, A.
Fontcuberta, Josep
Laukhin, Vladimir
Skumryev, Vassil
García-Cuenca Varona, María Victoria
Ferrater Martorell, Cèsar
Varela Fernández, Manuel, 1956-
Vilà, A.
Lüders, Ulrike Anne
Bobo, Jean-François
American Physical Society
2006
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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.
Anglès
Ferroelectric materials; Epitaxy; Ozone; Atomic force microscopy; Exchange interactions; Ferromagnetic materials; Ferroelectric thin films; Thin film growth; X-ray diffraction; Polarization
Applied physics letters ; Vol. 89, Issue 3 (July 2006), p. 032510/1-032510/3
open access
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