Characterization of electrodeposited Co-Pt nanodot array at initial deposition stage

Siggi Wodarz, Tomohiro Otani, Hiroki Hagiwara, Takayuki Homma

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

    2 Citations (Scopus)

    Abstract

    We have fabricated Co-Pt nanodot arrays by electrochemical process for the application of bit patterned media (BPM), which is proposed as a key technology for future recording media. Since formation of uniform nanodot arrays is required for BPM, controlling the initial stages of electrodeposition is significant. In this work, we analyzed the effects of applied potential and size of nano-patterns on initial stages of Co-Pt electrodeposition. As a result, number of Co-Pt nuclei decreased in smaller nano-pore. In particular, formation of Co-Pt single grains, which exhibit high and uniform coercivity, was expected with low overpotential in nanopore with 10 nm diameter. Furthermore, coercivities of Co-Pt films at the initial stage increased with lower overpotential, since Co-Pt nucleated and grew along with Ru underlayer with high orientation. These results indicate that magnetic properties of Co-Pt nanodot arrays can be optimized by controlling the nucleation and growth behavior of Co-Pt.

    Original languageEnglish
    Title of host publicationECS Transactions
    PublisherElectrochemical Society Inc.
    Pages99-105
    Number of pages7
    Volume64
    Edition45
    ISBN (Print)9781607685395
    DOIs
    Publication statusPublished - 2015
    EventSymposium on Student Poster General Session - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico
    Duration: 2014 Oct 52014 Oct 9

    Other

    OtherSymposium on Student Poster General Session - 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

    Wodarz, S., Otani, T., Hagiwara, H., & Homma, T. (2015). Characterization of electrodeposited Co-Pt nanodot array at initial deposition stage. In ECS Transactions (45 ed., Vol. 64, pp. 99-105). Electrochemical Society Inc.. https://doi.org/10.1149/06445.0099ecst