ASIA unversity:Item 310904400/79859
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    题名: Damage layer study of the overcoat deposited on the top magnetic layer of hard disks
    作者: 葉榮輝(RONG-HWEI, YEH)、趙宗明(T.M.Chao)、譚安宏(A.H.Tan)
    贡献者: 光電與通訊學系
    关键词: Damage layer;Diamond-like carbon;Top magnetic layer;Hard disk;Taguchi design
    日期: 2014-02
    上传时间: 2014-06-05 12:20:25 (UTC+8)
    摘要: This paper presents the effect of nanoscale damage layer on magnetic results obtained from the optimization of media overcoat deposition parameters on the top magnetic layer on magnetic hard disks. We have investigated the effects of interface interaction between the overcoat deposition parameters on the top magnetic layer on the media by using a plasma enhanced chemical vapor deposition (PECVD) on next generation hard disks. The goal is to achieve a reduced damage layer, lower head media spacing (HMS) and a higher spectrum of signal to noise ratio (SpSNR) optimized by using Taguchi experimental design with a four-factor three-level (L9) orthogonal array. An analysis of variance (ANOVA) was carried out to interpret the measured coercivity (Hc), HMS and SpSNR. It was found that source gas type is the most significant factor with a percentage contribution effect of 59.8% on HMS and 51.7% on SpSNR. The bias voltage is the second most significant factor with its percentage contribution being 24.2% on HMS and 31.0% on SpSNR. Overall, the optimum SpSNR was obtained using a C2H2 source gas, −100 V bias voltage, 50 V anode voltage and 20 sccm gas flow rate, respectively.
    關聯: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
    显示于类别:[國際企業學系] 期刊論文

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