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    • 2. 发明授权
    • CoCrNiTa/Cr magnetic recording medium
    • CoCrNiTa / Cr磁记录介质
    • US6033772A
    • 2000-03-07
    • US964523
    • 1997-11-05
    • Yu-Yun LoTai-hwang LaiJames LiangHung-huei Liang
    • Yu-Yun LoTai-hwang LaiJames LiangHung-huei Liang
    • G11B5/64G11B5/66
    • G11B5/656Y10S428/90Y10T428/26Y10T428/265
    • A magnetic recording medium for use in making high-density computer hard disks. It contains: (a) an aluminum or Ni/P substrate; (b) a chromium underlayer on the substrate; (c) a four-component magnetic recording layer on the underlayer; and (d) a carbon protective layer on the magnetic recording layer. The magnetic recording layer comprises 66-78 atom percent of cobalt, 12-16 atom percent of chromium, 6-10 atom percent of nickel, and 4-8 atom percent of tantalum. The CoCrTiTa four-component exhibits a high coercivity (greater than 2,800 Oe), which results in many improved qualities, including increased recording density, reduced noise, improved off-track capability (OTC), and reduced on-track error rate (OTER). It also also allows the sputtering process to be conducted at a substantially lowered temperature.
    • 用于制造高密度计算机硬盘的磁记录介质。 它包含:(a)铝或Ni / P基材; (b)基底上的铬底层; (c)底层上的四组分磁记录层; 和(d)磁记录层上的碳保护层。 磁记录层包括66-78原子%的钴,12-16原子%的铬,6-10原子%的镍和4-8原子%的钽。 CoCrTiTa四组分显示出高矫顽力(大于2,800 Oe),这导致许多改进的质量,包括增加记录密度,降低的噪声,改进的离轨能力(OTC)和降低的轨道误差率(OTER) 。 它还允许溅射工艺在基本上降低的温度下进行。