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Fabrication and ferromagnetic resonance of cobalt chiral meta-molecule arrays

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Abstract

We have succeeded in fabricating arrays of micrometer-sized, three-dimensional chiral meta-molecule (CMM) of cobalt (Co) by using a strain-driven self-coiling technique. In the arrays, the Co CMMs were fixed on a silicon substrate and aligned in the same direction. We investigated the ferromagnetic resonance of the arrays with varying angles of an external dc magnetic field. The Co CMM arrays show isotropic resonance signals, whose resonance fields are independent of the dc field orientation with respect to the helical axis.

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Acknowledgments

The authors acknowledge S. Koh, S. Uegaki, A. Yoshida for valuable discussions. English proofreading by L. McDowell is also acknowledged. ST acknowledges the partial support of this work by JSPS KAKENHI Grant No. 23654124.

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Authors and Affiliations

  1. Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara, 630-0192, Japan

    Toshiyuki Kodama, Satoshi Tomita, Nobuyoshi Hosoito & Hisao Yanagi

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  1. Toshiyuki Kodama
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  2. Satoshi Tomita
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  3. Nobuyoshi Hosoito
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  4. Hisao Yanagi
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Correspondence to Satoshi Tomita.

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Kodama, T., Tomita, S., Hosoito, N. et al. Fabrication and ferromagnetic resonance of cobalt chiral meta-molecule arrays. Appl. Phys. A 122, 41 (2016). https://doi.org/10.1007/s00339-015-9564-7

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  • DOI: https://doi.org/10.1007/s00339-015-9564-7

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