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Observation of Magnetic-Switching and Multiferroic-Like Behavior of Co Nanoparticles in a C60 Matrix

Authors

  • Yutaka Sakai,

    1. Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan
    2. Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan
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  • Eiiti Tamura,

    Corresponding author
    1. Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan
    • Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan
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  • Shuhei Toyokawa,

    1. Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan
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  • Eiji Shikoh,

    1. Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan
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  • Vlado K. Lazarov,

    1. Department of Physics, University of York, Heslington, York, YO10 5DD, UK
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  • Atsufumi Hirohata,

    1. Department of Electronics, University of York, Heslington, York, YO10 5DD, UK
    2. PRESTO-JST, 4-1-8 Honcho, Kawaguchi 332-0012, Saitama, Japan
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  • Teruya Shinjo,

    1. Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan
    2. Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan
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  • Yoshishige Suzuki,

    1. Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan
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  • Masashi Shiraishi

    Corresponding author
    1. Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan
    2. PRESTO-JST, 4-1-8 Honcho, Kawaguchi 332-0012, Saitama, Japan
    • Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan.
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Abstract

A novel magnetoelectric effect is found to appear in a C60-Co nanocomposite. Although Co is well-known as a ferromagnet, its nanoparticles embedded in a C60 matrix can exhibit multiferroic-like behavior, i.e., an electric field controls magnetic alignment of the nanoparticles and a magnetic field controls their charged states. This novel effect enables a strong magnetic switching effect for which the on/off ratio is ca. 104. Such an effect has been expected to exist and these findings show this magnetoelectric coupling for the first time.

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