Noise reduction in CoCrTaNiPt/Cr longitudinal media with new Co co-precipitated NiP/Al substrate

S. Yoshimura, D. D. Djayaprawira, Tham Kim Kong, Y. Masuda, H. Shoji, M. Takahashi

    研究成果: Conference article査読

    抄録

    For the purpose of reducing grain size and grain size distribution while maintaining intergranular interactions of magnetic grains in CoCrTaNiPt/Cr media, a small amount of oxygen exposure onto a normal NiP and a Co co-precipitated NiP (Co-NiP)/Al-alloy substrates was used. Oxygen exposure was used for the purpose of increasing the density of nucleation sites. The dependence of media microstructure and R/W performance on oxygen exposure and Co concentration was examined. It was found that utilization of exposure of a small amount of oxygen gas onto a normal NiP and Co-NiP/Al-alloy substrates effectively reduced the grain size and its distribution. As a result, media noise was effectively reduced by about 10% and signal to noise ratio was improved by 1 dB.

    本文言語English
    ジャーナルDigests of the Intermag Conference
    出版ステータスPublished - 2000 1 1
    イベント2000 IEEE International Magnetics Conference-2000 IEEE INTERMAG - Toronto, Ont, Can
    継続期間: 2000 4 92000 4 13

    ASJC Scopus subject areas

    • 電子工学および電気工学

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