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20 April 2024

» arxiv » 1110.4568

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Magnetism in nanometer-thick magnetite
Matteo Monti ; Benito Santos ; Arantzazu Mascaraque ; Oscar Rodríguez de la Fuente ; Miguel Angel Niño ; Tevik Onur Menteş ; Andrea Locatelli ; Kevin F. McCarty ; Jose F. Marco ; Juan de la Figuera ;
Date:	20 Oct 2011
Abstract:	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 one-nanometer-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 nano-crystals up to at least 520 K, establishing the retention of ferrimagnetism in magnetite two-unit-cells thick.
Source:	arXiv, 1110.4568
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