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Published on: April 15, 2010
Geometrically defined spin structures in ultrathin Fe3O4 with bulk like magnetic properties
Sandra Ruiz-Gómez1, Lucas Pérez1, Arantzazu Mascaraque1
1Dpto. de Física de Materiales, Universidad Complutense de Madrid, Madrid E-28040, Spain and Unidad Asociada IQFR(CSIC)-UCM, Madrid E-28040, Spain.
Abstract:
We have grown high quality magnetite microcrystals free from antiphase boundaries on Ru(0001) by reactive molecular beam epitaxy, conserving bulk magnetic properties below 20 nm thickness. Magnetization vector maps are obtained by X-ray spectromicroscopy and compared with micromagnetic simulations. The observed domain configurations are dictated purely by shape anisotropy, overcoming the possible influences of (magneto)crystalline anisotropy and defects, thus demonstrating the possibility of designing spin structures in ultrathin, magnetically soft magnetite at will.
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