Fabrication of FePt and CoPt magnetic nanodot arrays by electrodeposition process

Takayuki Homma, Siggi Wodarz, Daiki Nishiie, Tomohiro Otani, Siyuan Ge, Giovanni Zangari

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    4 Citations (Scopus)

    Abstract

    Fabrication of Co-Pt and Fe-Pt ferromagnetic nanodot arrays for the application of ultra-high density bit patterned media (BPM) by electrochemical processes was described. In order to form patterned substrates for nanodot arrays with the density higher than 1 Tbit/inch<sup>2</sup>, electron beam lithography technique was employed. Nanopatterns with 25 nm and 18 nm pitch, which correspond to 1 and 2 Tbit/inch<sup>2</sup> were successfully formed by optimizing the condition of the lithography process, and Co-Pt and Fe-Pt with relatively high coercivity of 4.8 kOe and 10.3 kOe were formed by electrodeposition. By utilizing the nanopatterned substrates, Co-Pt and Fe-Pt nanodot arrays with 25 nm and 35 nm pitch were uniformly formed. These results demonstrate capability of the electrochemical processes for fabricating magnetic nanodot arrays with Tbit-level density.

    Original languageEnglish
    Title of host publicationECS Transactions
    PublisherElectrochemical Society Inc.
    Pages1-9
    Number of pages9
    Volume64
    Edition31
    ISBN (Print)9781607685395
    DOIs
    Publication statusPublished - 2014
    EventSymposium on Magnetic Materials, Processes, and Devices 13 - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico
    Duration: 2014 Oct 52014 Oct 9

    Other

    OtherSymposium on Magnetic Materials, Processes, and Devices 13 - 2014 ECS and SMEQ Joint International Meeting
    CountryMexico
    CityCancun
    Period14/10/514/10/9

    ASJC Scopus subject areas

    • Engineering(all)

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  • Cite this

    Homma, T., Wodarz, S., Nishiie, D., Otani, T., Ge, S., & Zangari, G. (2014). Fabrication of FePt and CoPt magnetic nanodot arrays by electrodeposition process. In ECS Transactions (31 ed., Vol. 64, pp. 1-9). Electrochemical Society Inc.. https://doi.org/10.1149/06431.0001