Effect of Oxidation Process on Grain-Size Reduction for Longitudinal Media Using Ni-Based Amorphous Seedlayer

Masaki Mikami, D. D. Djayaprawira, S. Yoshimura, M. Takahashi

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    Oxidation process using Ni-based amorphous seedlayer (NiNb, NiTa, and NiZr) has been studied to control the grain size of longitudinal media fabricated on glass substrate. The mechanism of the grain-size reduction was investigated using an in situ Auger electron spectroscopy technique. It is found that NiNb seedlayer is the most effective to reduce the media grain size. This is suggested to be due to the lowest affinity for oxygen for Nb as compared with Ta or Zr. The reduction of the grain size (GDact) with using Ni-based seedlayer and oxygen process is inferred mainly due to uniform oxidation of the initial growth of the underlayer.

    Original languageEnglish
    Pages (from-to)2258-2260
    Number of pages3
    JournalIEEE Transactions on Magnetics
    Volume39
    Issue number5 II
    DOIs
    Publication statusPublished - 2003 Sep 1

    Keywords

    • Amorphous seedlayer
    • Longitudinal media
    • Oxidation
    • Thin film

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

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