Matteo Monti, Mikel Sanz, Mohamed Oujja, Esther Rebollar, Marta Castillejo, Marta Castillejo, Alberto Bollero, Julio Camarero, Jose Luis F. Cuñado, Norbert M. Nemes, Federico J. Mompean, Mar Garcia-Hernández, Shu Nie, Kevin F. McCarty, Alpha T. N'Diaye, Gong Chen, Andreas K. Schmid, José F. Marco, Juan de la Figuera
We examine the magnetic easy-axis directions of stoichiometric magnetite films grown on SrTiO3:Nb by infrared pulsed-laser deposition. Spin-polarized low-energy electron microscopy reveals that the individual magnetic domains are magnetized along the in-plane <100> film directions. Magneto-optical Kerr effect measurements show that the maxima of the remanence and coercivity are also along in-plane <100> film directions. This easy-axis orientation differs from bulk magnetite and films prepared by other techniques, establishing that the magnetic anisotropy can be tuned by film growth.
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http://arxiv.org/abs/1307.6873
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