Photoemission electron microscopy study of sub-200 nm self-assembled La0.7Sr0.3MnO3 epitaxial islands

Jone Zabaleta, Sergio Valencia, Florian Kronast, César Moreno, Patricia Abellán, Jaume Gázquez, H. Sepehri-Amin, Felip Sandiumenge, Teresa Puig, Narcís Mestres, Xavier Obradors

研究成果: Article査読

9 被引用数 (Scopus)

抄録

The chemical composition and the magnetic structure of individual La 0.7Sr0.3MnO3 (LSMO) ferromagnetic manganite epitaxial nanostructures less than 200 nm in width are explored using Photoemission Electron Microscopy (PEEM). X-ray absorption spectra (XAS) provide separate information on the surface and the bulk composition of the nanoislands and give evidence of Mn2+ present on the surface of otherwise stoichiometric nanostructures. Ferromagnetic domains less than 70 nm are resolved using X-ray magnetic circular dichroism (XMCD), which allows for the detection of magnetic vortex states in both (001)LSMO square and (111)LSMO triangular manganite nanoislands. The evolution of single nanostructures under an in-plane magnetic field is seen to depend on the specific nanoisland size and geometry. In particular, PEEM XMCD imaging allows detecting opposite chiralities as well as a variety of magnetization behaviors for different nanoislands.

本文言語English
ページ(範囲)2990-2998
ページ数9
ジャーナルNanoscale
5
7
DOI
出版ステータスPublished - 2013
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)

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