@article{10902/35008,
year = {2013},
url = {https://hdl.handle.net/10902/35008},
abstract = {The chemical composition and the magnetic structure of individual La₀.₇Sr₀.₃MnO₃ (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.},
organization = {We acknowledge funding from the European Community's Seventh Framework Programme (FP7/2007–2013) under grant agreement no. 226716. Financial support from Spanish MICINN (MAT2008-01022 and MAT2011-29874-C02-01), Consolider NANOSELECT (CSD2007-00041) and Generalitat de Catalunya (2009 SGR 770 and Xarmae) are also acknowledged. We acknowledge A. Crespi from the ICMAB XRD Scientic Services, J. Herrero-Albillos for technical support at BESSY II, and Serveis Cientìcs-Tècnics de la UB and UAB for the use of the TEM
facilities. J.Z. and P.A. acknowledge FPU PhD grants from Spanish MICINN, J.G. thanks CSIC for a JAE-post, C.M. and H.S. thank the Japanese Ministry for Education, Culture, Sports, Science and Technology (MEXT) through the ICYS program.},
publisher = {Royal Society of Chemistry},
publisher = {Nanoscale, 2013, 5(7),  2990-2998},
title = {Photoemission electron microscopy study of sub-200 nm self-assembled La₀.₇Sr₀.₃MnO₃ epitaxial islands},
author = {Zabaleta, Jone and Valencia, Sergio and Kronast, Florian and Moreno Sierra, César and Abellán, Patricia and Gázquez, Jaume and Sepehri-Amin, H. and Sandiumenge, Felip and Puig, Teresa and Mestres, Narcís and Obradors, Xavier},
}