A multistep ac electrodeposition method to prepare Co nanowires with high coercivity

Pangpang Wang, Lumei Gao, Zhiyong Qiu, Xiaoping Song, Liqun Wang, Sen Yang, Ri Ichi Murakami

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    23 Citations (Scopus)

    Abstract

    It is known that the ac electrodeposition method with low current density can grow compact metal nanowires, but the length of those nanowires is very short. In contrast, the ac electrodeposition method with high current density can grow long metal nanowires. However these long nanowires are not compact and contain lots of defects. In this paper, we describe a multistep ac electrodeposition method to fabricate long metal nanowires with compact structure uniformly filled upon a porous anodic aluminum oxide template. Using this method, Co nanowires with high coercivity (Hc) and remnant ratio (Mr / Ms) have been prepared under relatively low deposition current density. The Co nanowires exhibited obvious magnetic anisotropy with the easy axis along the axial direction of nanowires. The maximal Hc (2900 Oe) and Mr / Ms (0.95) were optimal for the perpendicular magnetic recording materials. The magnetic microstructure of Co nanowires is also discussed in this paper.

    Original languageEnglish
    Article number064304
    JournalJournal of Applied Physics
    Volume104
    Issue number6
    DOIs
    Publication statusPublished - Oct 9 2008

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

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    Wang, P., Gao, L., Qiu, Z., Song, X., Wang, L., Yang, S., & Murakami, R. I. (2008). A multistep ac electrodeposition method to prepare Co nanowires with high coercivity. Journal of Applied Physics, 104(6), [064304]. https://doi.org/10.1063/1.2975843