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    Magnetic recording medium and magnetic recording system using the same
    11.
    发明授权
    Magnetic recording medium and magnetic recording system using the same 失效
    磁记录介质和使用磁记录系统的磁记录系统

    公开(公告)号：US5759681A

    公开(公告)日：1998-06-02

    申请号：US595303

    申请日：1996-02-01

    申请人： Yuzuru Hosoe ,  Kazuetsu Yoshida ,  Nobuyuki Inaba ,  Tomoo Yamamoto ,  Akira Ishikawa ,  Masaaki Futamoto ,  Hiroyuki Kataoka ,  Yoshihiro Shiroishi

    发明人： Yuzuru Hosoe ,  Kazuetsu Yoshida ,  Nobuyuki Inaba ,  Tomoo Yamamoto ,  Akira Ishikawa ,  Masaaki Futamoto ,  Hiroyuki Kataoka ,  Yoshihiro Shiroishi

    IPC分类号： G11B5/127 ,  G11B5/39 ,  G11B5/66

    CPC分类号： G11B5/1278 ,  G11B5/3967 ,  G11B5/66 ,  Y10S428/90 ,  Y10T428/26 ,  Y10T428/265

    摘要： A magnetic recording system includes an intermediate layer arranged between adjacent ones of a plurality of magnetic layers constituting a magnetic recording medium, the magnetic recording medium driven by a drive section in the recording direction, and a magnetic head including a write section and a read-back section set in relative motion with respect to the magnetic recording medium. Signals are applied to the magnetic head and the output signals from the magnetic head are read back by a read/write signal processing device. The read-back section of the magnetic head includes a magnetoresistive magnetic head. The magnetic layers of the magnetic recording medium include crystal grains having different crystal orientations and existing in overlapped positions in the direction perpendicular to the medium surface. High-density information read/write operation thus is made possible with an improved reliability.

    摘要翻译： 磁记录系统包括布置在构成磁记录介质的多个磁性层的相邻磁记录层之间的中间层，由记录方向上的驱动部分驱动的磁记录介质，以及包括写入区和读出区的磁头， 相对于磁记录介质相对运动地设置。 信号被施加到磁头，并且来自磁头的输出信号由读/写信号处理装置读回。 磁头的回读部分包括磁阻磁头。 磁记录介质的磁性层包括具有不同晶体取向并且在与介质表面垂直的方向上重叠位置的晶粒。 因此，高密度信息读/写操作可以提高可靠性。

    Magnetic recording medium
    14.
    发明授权
    Magnetic recording medium 失效
    磁记录介质

    公开(公告)号：US06383667B1

    公开(公告)日：2002-05-07

    申请号：US09413813

    申请日：1999-10-07

    申请人： Masaaki Futamoto ,  Nobuyuki Inaba ,  Yoshiyuki Hirayama ,  Teruaki Takeuchi ,  Yukio Honda

    发明人： Masaaki Futamoto ,  Nobuyuki Inaba ,  Yoshiyuki Hirayama ,  Teruaki Takeuchi ,  Yukio Honda

    IPC分类号： G11B566

    CPC分类号： G11B5/7325 ,  G11B5/656 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12854 ,  Y10T428/265

    摘要： A magnetic recording medium includes a substrate, an underlayer provided on the substrate, a Co alloy magnetic film formed through the underlayer, and a protective film for protecting the magnetic film, wherein the underlayer has a two-layer structure of an lower underlayer contacted with the substrate and an upper underlayer contacted with the Co alloy magnetic film, the upper underlayer is a Co—Crx—My alloy film having a hexagonal close-packed structure, where 25 atomic %≦x+y≦50 atomic %, 0.5 atomic %≦y, nonmagnetic element M is one selected from the group of elements B, Si, Ge, C, Al, P, Ti, V, Nb, Zr, Hf, Mn, Rh, Os, Ir, Re, Pd, Pt, Mo, Ta, W, Ag and Au. Thereby the medium can be increased in its coercive force and can be improved in its thermal stability characteristics.

    摘要翻译： 磁记录介质包括基板，设置在基板上的底层，通过底层形成的Co合金磁膜和用于保护磁性膜的保护膜，其中底层具有与下层接触的下层结构 基底和与Co合金磁膜接触的上基底层，上底层是具有六方密堆积结构的Co-Crx-My合金膜，其中25原子％<= x + y <= 50原子％，0.5 原子％<= y，非磁性元素M是选自元素B，Si，Ge，C，Al，P，Ti，V，Nb，Zr，Hf，Mn，Rh，Os，Ir，Re，Pd ，Pt，Mo，Ta，W，Ag和Au。 因此，介质的矫顽力可以提高，并且可以提高其热稳定性。

    Perpendicular magnetic recording medium and magnetic storage apparatus using the same
    16.
    发明授权
    Perpendicular magnetic recording medium and magnetic storage apparatus using the same 失效
    垂直磁记录介质及使用其的磁存储装置

    公开(公告)号：US06183893B2

    公开(公告)日：2001-02-06

    申请号：US09285751

    申请日：1999-04-05

    申请人： Masaaki Futamoto ,  Yoshiyuki Hirayama ,  Kenya Ito ,  Kazuetsu Yoshida ,  Yukio Honda ,  Nobuyuki Inaba

    发明人： Masaaki Futamoto ,  Yoshiyuki Hirayama ,  Kenya Ito ,  Kazuetsu Yoshida ,  Yukio Honda ,  Nobuyuki Inaba

    IPC分类号： B32B1500

    CPC分类号： G11B5/7325 ,  G11B5/00 ,  G11B5/012 ,  G11B5/66 ,  G11B2005/0029 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12861 ,  Y10T428/12875 ,  Y10T428/265

    摘要： The present invention relates to a perpendicular magnetic recording medium and a magnetic storage apparatus which are improved to be suitable for high-density magnetic recording. An object thereof is to provide the perpendicular magnetic recording medium and the magnetic storage apparatus which have a low noise property for realizing a recording density of 10 Gb/in.2 or more and a high stability against thermal fluctuation. The perpendicular magnetic recording medium comprising a perpendicular magnetic film formed through an underlayer on a nonmagnetic substrate, wherein the underlayer comprises a material having a hexagonal close packed structure or an amorphous structure, and has a first underlayer nearer to the substrate, and a second underlayer having a hexagonal close packed structure formed on the first underlayer and a preferred growth orientation of [0001] and comprising a material capable of hetero-epitaxy growth onto the perpendicular magnetic film.

    摘要翻译： 本发明涉及一种改进为适合于高密度磁记录的垂直磁记录介质和磁存储装置。 其目的是提供具有低噪声特性的垂直磁记录介质和磁存储装置，以实现10Gb / in.2以上的记录密度和对热波动的高稳定性。垂直磁记录介质包括 在非磁性基板上通过下层形成的垂直磁性膜，其中，所述下层包括具有六方密堆积结构或非晶结构的材料，并且具有更靠近所述基板的第一底层和具有六方密堆积结构的第二底层 形成在第一底层上，并且具有优选的生长方向，并且包括能够在垂直磁性膜上进行异质外延生长的材料。