Magnetism in nanometer-thick magnetite

Article

关键词: IRON-OXIDE FILMS;    PULSED-LASER DEPOSITION;    EPITAXIAL-GROWTH;    FE3O4;    FE;    MAGNETORESISTANCE;    NUCLEATION;    BEHAVIOR;   

DOI  :  10.1103/PhysRevB.85.020404

来源: SCIE

【 摘 要 】

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.

【 授权许可】

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