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Controlling exchange bias in Fe3O4/FeO composite particles prepared by pulsed laser irradiation

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Author(s): Swiatkowska-Warkocka Zaneta | Kawaguchi Kenji | Wang Hongqiang | Katou Yukiko | Koshizaki Naoto

Journal: Nanoscale Research Letters
ISSN 1931-7573

Volume: 6;
Issue: 1;
Start page: 226;
Date: 2011;
Original page

ABSTRACT
Abstract Spherical iron oxide nanocomposite particles composed of magnetite and wustite have been successfully synthesized using a novel method of pulsed laser irradiation in ethyl acetate. Both the size and the composition of nanocomposite particles are controlled by laser irradiation condition. Through tuning the laser fluence, the Fe3O4/FeO phase ratio can be precisely controlled, and the magnetic properties of final products can also be regulated. This work presents a successful example of the fabrication of ferro (ferri) (FM)/antiferromagnetic (AFM) systems with high chemical stability. The results show this novel simple method as widely extendable to various FM/AFM nanocomposite systems.
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