Geometrically defined spin structures in ultrathin Fe₃O₄ with bulk like magnetic properties



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Ruiz Gómez, Sandra and Pérez García, Lucas and Mascaraque Susunaga, Arantzazu and Quesada, Adrian and Prieto, Pilar and Palacio, Irene and Martín García, Laura and Foerster, Michael and Aballe, Lucía and Figuera, Juan de la (2018) Geometrically defined spin structures in ultrathin Fe₃O₄ with bulk like magnetic properties. Nanoscale, 10 (12). pp. 5566-5573. ISSN 2040-3364

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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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© The Royal Society of Chemistry 2018.
This work is supported by the Spanish Ministerio de Economía y Competitividad through Projects no. MAT2013- 48009-C4-1-P, MAT2014-52477-C5-2-P, MAT2015-64110-C2-1-P, and MAT2015-64110-C2-2-P and by the European Comission through Project H2020 no. 720853 (Amphibian). These experiments were performed at the CIRCE beamline of the ALBA Synchrotron Light Facility. I. P. acknowledges the EU via the innovation program under grant agreement no. 696656 (GrapheneCore1-Graphene-based disruptive technologies).

Uncontrolled Keywords:Films; Behavior; Anisotropy; Cobalt; Iron
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:47599
Deposited On:18 May 2018 17:13
Last Modified:21 May 2018 07:54

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