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Title

Magnetic structure of epitaxial self-assembled La0.7Sr0.3MnO3 nanoislands

AuthorsZabaleta, Jone ; Valencia, Sergio; Kronast, Florian; Jaafar, Miriam ; Abellán, Patricia ; Moreno, César ; Gázquez, Jaume ; Iglesias-Freire, Óscar ; Sandiumenge, Felip ; Puig Molina, Teresa ; Asenjo Barahona, Agustina ; Mestres, Narcís ; Obradors, Xavier
Issue Date2013
PublisherAmerican Physical Society
CitationAPS March Meeting (2013)
AbstractThe mixed-valence manganite La0.7Sr0.3MnO3 (LSMO), in nanoscale configuration, is a strong candidate for magnetic logic and sensor applications because of its Curie temperature (360 K) and high degree of spin polarization. In this work we unravel the magnetic structure of self-assembled ferromagnetic LSMO epitaxial nanoislands smaller than 200 nm in lateral size and less than 40 nm in height, grown using a bottom-up solution-based methodology. Magnetic force microscopy shows that LSMO islands stabilize either single domain, multidomain, or vortex state configurations, depending on their lateral size and aspect ratio. The vortex state of islands with different morphology and two distinct crystallographic orientations is further explored using spatially-resolved x-ray magnetic circular dichroism in photoemission electron microscopy measurements. The vortex evolution of individual islands is tracked in-situ by applying in-plane magnetic field. The magnetic structure study is complemented with crystal structure, strain state, and chemical composition studies.
Publisher version (URL)http://meetings.aps.org/link/BAPS.2013.MAR.J17.3
URIhttp://hdl.handle.net/10261/180314
Appears in Collections:(ICMAB) Comunicaciones congresos
(ICMM) Comunicaciones congresos
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