Magnetism in nanometer-thick magnetite



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Monti, Matteo and Santos, Benito and Mascaraque Susunaga, Arantzazu and Rodríguez de la Fuente, Óscar and Nino, Miguel Angel and Mentes, Tevfik Onur and Locatelli, Andrea and McCarty, Kevin F. and Marco, Jose F. and Figuera, Juan de la (2012) Magnetism in nanometer-thick magnetite. Physical Review B, 85 (2). ISSN 1098-0121

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The oldest known magnetic material, magnetite, is of current interest for use in spintronics as a thin film. An open question is how thin can magnetite films be and still retain the robust ferrimagnetism required for many applications. We have grown 1-nm-thick magnetite crystals and characterized them in situ by electron and photoelectron microscopies including selected-area x-ray circular dichroism. Well-defined magnetic patterns are observed in individual nanocrystals up to at least 520 K, establishing the retention of ferrimagnetism in magnetite two unit cells thick.

Item Type:Article
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© 2012 American Physical Society
Spanish Ministry of Science and Innovation [MAT2009-4578-C03-01, MAT2009-14578-C03-02, MAT2010-21156-C03-02]; Office of Basic Energy Sciences, Division of Materials and Engineering Sciences, US Department of Energy [DE-AC04-94AL85000]; European Union [226716-ELISA]; Spanish Ministry of Science and Innovation through FPI

Uncontrolled Keywords:Iron-oxide films, Pulsed-laser deposition, Epitaxial-growth, Fe_3O_4 films, Fe, Magnetoresistance, Nucleation, Behavior
Subjects:Sciences > Physics > Materials
ID Code:28221
Deposited On:16 Feb 2015 10:46
Last Modified:13 Feb 2018 13:39

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