Information recording media and information recording drive
    31.
    发明授权
    Information recording media and information recording drive 失效
    信息记录媒体和信息记录驱动

    公开(公告)号:US06534206B1

    公开(公告)日:2003-03-18

    申请号:US09604132

    申请日:2000-06-27

    IPC分类号: G11B566

    摘要: A magneto-optical storage apparatus including an ultra-high density information recording media having an inorganic compound layer 12 on a substrate 11, and in the inorganic compound layer 12, an oxide of at least one kind selected from silicon oxide, aluminum oxide, titanium oxide, tantalum oxide, and zinc oxide exists in an amorphous state at a grain boundary of crystal grain of an oxide of at least one kind selected from cobalt oxide, iron oxide, and nickel oxide. The media has a magnetic layer 13 made of an artificial lattice multilayer obtained by alternately laminating a Co layer or an alloy layer consisting of Co as a main phase and a metal element layer of at least one kind selected from Pt and Pd onto the layer 12. Thus, a distribution of magnetic properties serving as a pinning site of the movement of a magnetic wall in case of recording information to the magnetic layer 13 is formed in the magnetic layer 13.

    摘要翻译: 一种磁光存储装置,包括在基板11上具有无机化合物层12的超高密度信息记录介质,在无机化合物层12中,选自氧化硅,氧化铝,钛 氧化物,氧化钽和氧化锌以选自氧化钴,氧化铁和氧化镍中的至少一种的氧化物的晶粒的晶界处于非晶态存在。 介质具有通过将由Co组成的Co层或合金层交替层叠到层12上的由人造晶格多层构成的磁性层13,所述Co层或合金层选自Pt和Pd中的至少一种的金属元素层 因此,在磁性层13中形成作为磁性层记录信息的情况下的磁性壁移动的钉扎部位的磁特性的分布。

    Magnetic recording medium and magnetic recording system using the same
    32.
    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

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

    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。

    Information recording medium with magnetic marks, recording and reproducing apparatus therefor, and head positioning method using detected magnetic leakage fields from the magnetic marks
    34.
    发明授权
    Information recording medium with magnetic marks, recording and reproducing apparatus therefor, and head positioning method using detected magnetic leakage fields from the magnetic marks 失效
    具有磁痕的信息记录介质,其记录和再现装置以及使用来自磁痕的检测到的磁泄漏场的磁头定位方法

    公开(公告)号:US06970400B1

    公开(公告)日:2005-11-29

    申请号:US09671478

    申请日:2000-09-27

    摘要: A recording and reproducing apparatus including a recording magnetic head and a reproducing magnetic head with their floating height lowered for high density recordation and reproduction is provided. An information recording medium is provided on which it is possible to densely record information and from which it is possible to densely reproduce information by lowering the floating height of the recording and reproducing heads. The information recording medium includes a flat substrate and a recording layer provided on the substrate. Servo patterns and management information are recorded as magnetic marks on the recording layer in advance by a servo writer or the like. Because the substrate needs no recessed and embossed patterns formed in it, the slider of the recording and reproducing apparatus can be floated at a constant floating height lower than conventionally over the whole area of the medium. During information recordation, the position of the slider is controlled on the basis of the magneto-optical signals from the magnetic marks. During information reproduction, the reproducing magnetic head controls the slider position on the basis of the magnetic leakage fields leaking from the magnetic marks.

    摘要翻译: 提供包括记录磁头和其浮动高度降低以用于高密度记录和再现的再现磁头的记录和再现装置。 提供一种信息记录介质,在该信息记录介质上可以密集地记录信息,并且可以通过降低记录和再现磁头的浮动高度从而可以密集地再现信息。 信息记录介质包括平坦基板和设置在基板上的记录层。 伺服模式和管理信息通过伺服写入器等预先记录在记录层上作为磁标记。 因为基板不需要在其中形成凹陷和压花图案,所以记录和再现装置的滑动件可以浮动在比传统的介质整个区域以下的恒定浮动高度。 在信息记录期间,滑块的位置是根据来自磁痕的磁光信号进行控制的。 在信息再现期间,再现磁头基于从磁痕泄漏的磁泄漏场来控制滑块位置。

    Information recording media and information recording drive
    35.
    发明授权
    Information recording media and information recording drive 失效
    信息记录媒体和信息记录驱动

    公开(公告)号:US06749955B2

    公开(公告)日:2004-06-15

    申请号:US10349440

    申请日:2003-01-23

    IPC分类号: B32B900

    摘要: An ultra-high density information recording media has an inorganic compound layer 12 on a substrate 11, and in the inorganic compound layer 12, an oxide of at least one kind selected from silicon oxide, aluminum oxide, titanium oxide, tantalum oxide, and zinc oxide exists in an amorphous state at a grain boundary of crystal grain of an oxide of at least one kind selected from cobalt oxide, iron oxide, and nickel oxide. The media has a magnetic layer 13 made of an artificial lattice multilayer obtained by alternately laminating a Co layer or an alloy layer consisting of Co as a main phase and a metal element layer of at least one kind selected from Pt and Pd onto the layer 12. Thus, a distribution of magnetic properties serving as a pinning site of the movement of a magnetic wall in case of recording information to the magnetic layer 13 is formed in the magnetic layer 13.

    摘要翻译: 超高密度信息记录介质在基板11上具有无机化合物层12,在无机化合物层12中,选自氧化硅,氧化铝,氧化钛,氧化钽和锌中的至少一种的氧化物 在选自氧化钴,氧化铁和氧化镍中的至少一种的氧化物的晶粒的晶界处以非晶态存在氧化物。 介质具有通过将由Co组成的Co层或合金层交替层叠到层12上的由人造晶格多层构成的磁性层13,所述Co层或合金层选自Pt和Pd中的至少一种的金属元素层 因此,在磁性层13中形成作为磁性层记录信息的情况下的磁性壁移动的钉扎部位的磁特性的分布。

    Magnetic recording medium and its production method, and magnetic recorder
    37.
    发明授权
    Magnetic recording medium and its production method, and magnetic recorder 失效
    磁记录介质及其制作方法,磁记录仪

    公开(公告)号:US06730421B1

    公开(公告)日:2004-05-04

    申请号:US09959855

    申请日:2001-11-09

    IPC分类号: G11B566

    摘要: A magnetic recording medium (300) includes a substrate (1) and on the substrate (1) a first underlying layer (32), a second underlying layer (33), a magnetic layer (34), and a protective layer (35). Because of the existence of the first underlying layer (32) of Hf, initial growth layer having no specific crystal structure is prevented from growing in the second underlying layer (33). The second underlying layer (33) has a structure in which CoO particles having a cross section of a regular hexagon and separated by SiO2 portion are arranged in honeycomb. Since magnetic particles are epitaxially grown from CoO particles, the size of the magnetic particles and particle size distribution can be controlled, and the magnetic interaction between magnetic particles can be lessened. The underlying layer (33) and the protective layer (35) are formed by ECR sputtering. Such a magnetic recording medium is free from noise and thermal fluctuation, and ultrahigh recording density over 40 Gbit/inch2 is realized.

    摘要翻译: 磁记录介质(300)包括基板(1)和基板(1)上的第一下层(32),第二下层(33),磁性层(34)和保护层(35) 。 由于Hf的第一下层(32)的存在,防止了在第二下层(33)中不具有特定晶体结构的初始生长层。 第二基底层(33)具有其中具有正六边形横截面并由SiO 2部分分离的CoO颗粒被布置成蜂巢状的结构。 由于磁性颗粒从CoO颗粒外延生长,因此可以控制磁性颗粒的尺寸和颗粒尺寸分布,并且可以减小磁性颗粒之间的磁性相互作用。 通过ECR溅射形成下层(33)和保护层(35)。 这样的磁记录介质没有噪声和热波动,并且实现超过40Gbit / inch 2的超高记录密度。