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Magnetic vortex evolution in self-assembled La0.7Sr0.3MnO3 nanoislands under in-plane magnetic field


J. Zabaleta, M. Jaafar, A. Asenjo, S. Agramunt-Puig, N. Del-Valle, C. Navau, A. Sanchez, T. Puig, X. Obradors and N. Mestres.

APL Materials. 2, 076111 (2014)


The magnetic vortex formation at room temperature and its evolution under in-plane magnetic field is studied in chemically grown self-assembled LaSrMnO nanoislands of less than 200 nm in width. We use variable field magnetic force microscopy and numerical simulations to confirm that the vortex state is ubiquitous in these square-base pyramid shape epitaxial LaSrMnO nanostructures, and that it requires in-plane magnetic fields below 40 kA/m to be annihilated.
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