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1.发明授权Magnetic recording medium using a perpendicular magnetic film having a tBr not exceeding one-fifth of a tBr of an in-plane magnetic film 失效使用tBr不超过面内磁性膜的tBr的五分之一的垂直磁性膜的磁记录介质公开(公告)号：US06835444B2
公开(公告)日：2004-12-28
申请号：US09976767
申请日：2001-10-12
申请人： Maki Maeda , Hiroto Takeshita , Takuya Uzumaki , Atsushi Tanaka
发明人： Maki Maeda , Hiroto Takeshita , Takuya Uzumaki , Atsushi Tanaka
IPC分类号： G11B566
CPC分类号： G11B5/66 , G11B5/855 , Y10T428/24967 , Y10T428/265 , Y10T428/31
摘要： A magnetic recording medium is provided. The magnetic recording medium comprises an in-plane magnetic film used for recording, and a perpendicular magnetic film formed on the in-plane magnetic film. The in-plane magnetic film has a magnetization easy axis in an in-plane direction. The perpendicular magnetic film has a magnetization easy axis oriented in a direction perpendicular to the magnetization easy axis of the in-plane magnetic film. A tBr (a product of a thickness and a residual magnetization) of the perpendicular magnetic film is set so as not to exceed one-fifth of a tBr of the in-plane magnetic film at the maximum.
摘要翻译： 提供磁记录介质。 磁记录介质包括用于记录的面内磁性膜和形成在面内磁性膜上的垂直磁性膜。 面内磁性膜在面内方向具有易磁化轴。 垂直磁性膜具有在与面内磁性膜的易磁化轴垂直的方向上取向的易磁化磁化轴。 垂直磁性膜的tBr（厚度和剩余磁化强度）被设定为不超过平面内磁性膜的tBr的五分之一。
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公开(公告)号：US20050196649A1
公开(公告)日：2005-09-08
申请号：US11091937
申请日：2005-03-28
申请人： Ryosaku Inamura , Hiroto Takeshita , Toshio Sugimoto , Kazumasa Shimoda , Takenori Oshima , Maki Maeda , Takuya Uzumaki , Atsushi Tanaka
发明人： Ryosaku Inamura , Hiroto Takeshita , Toshio Sugimoto , Kazumasa Shimoda , Takenori Oshima , Maki Maeda , Takuya Uzumaki , Atsushi Tanaka
CPC分类号： B32B1/00 , G11B5/65 , G11B5/667 , G11B5/7325
摘要： A perpendicular magnetic recording medium includes a magnetic orientation controller layer serving as a layer for controlling crystalline orientation in an upper layer. A non-magnetic orientation controller layer extends on the surface of the magnetic orientation controller layer The non-magnetic orientation controller layer serves as a layer for controlling crystalline orientation in an upper layer. A magnetic recording layer extends on the surface of the non-magnetic orientation controller layer. The perpendicular magnetic recording medium allows a reliable establishment of a uniform crystalline orientation in the magnetic recording layer based on the influences from the magnetic and non-magnetic orientation controller layers. A reliable establishment of a uniform crystalline orientation can be achieved without an increase in the thickness of the non-magnetic orientation controller layer.
摘要翻译： 垂直磁记录介质包括用作控制上层结晶取向层的磁性取向控制层。 非磁性取向控制层在磁性取向控制层的表面上延伸。非磁性取向控制层用作控制上层结晶取向的层。 磁记录层在非磁性取向控制层的表面上延伸。 垂直磁记录介质基于来自磁和非磁性取向控制层的影响，允许在磁记录层中可靠地建立均匀的晶体取向。 可以在不增加非磁性取向控制层的厚度的情况下实现均匀结晶取向的可靠建立。
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公开(公告)号：US07147940B2
公开(公告)日：2006-12-12
申请号：US10346342
申请日：2003-01-17
申请人： Maki Maeda , Hiroto Takeshita , Takuya Uzumaki
发明人： Maki Maeda , Hiroto Takeshita , Takuya Uzumaki
CPC分类号： G11B5/66
摘要： The present invention provides a perpendicular magnetic recording medium that reduces medium noise and achieves thermal stability of recording magnetization. This perpendicular magnetic recording medium has a substrate and a recording layer formed by single-layered magnetic nanoparticles that are aligned at uniform intervals. An auxiliary magnetic film that is thinner than the recording layer is interposed between the substrate and the recording layer. The magnetization of the magnetic nanoparticles is secured by the exchange interaction effect of the auxiliary magnetic film.
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公开(公告)号：US20050249982A1
公开(公告)日：2005-11-10
申请号：US11088241
申请日：2005-03-23
申请人： Hiroto Takeshita , Maki Maeda , Takuya Uzumaki
发明人： Hiroto Takeshita , Maki Maeda , Takuya Uzumaki
CPC分类号： G11B5/66 , G11B5/012 , G11B5/656 , G11B2005/0029 , Y10T428/24975
摘要： A magnetic recording layer is formed on an auxiliary magnetic layer in a perpendicular magnetic recording medium. The auxiliary magnetic layer has the axis of easy magnetization in the vertical direction perpendicular to the surface of a substrate. The perpendicular magnetic recording medium reliably allows establishment of the magnetization in the auxiliary magnetic layer in the vertical direction. When a magnetic flux flows along the vertical direction perpendicular to the surface of the magnetic recording layer, the magnetic flux flows across the magnetic recording layer in the vertical direction. The magnetization is thus reliably established in the magnetic recording layer in the vertical direction. The magnetic field of a stronger intensity is thus leaked out of the magnetic recording layer in the vertical direction.
摘要翻译： 在垂直磁记录介质中的辅助磁性层上形成磁记录层。 辅助磁性层在垂直于衬底表面的垂直方向具有容易磁化的轴。 垂直磁记录介质可靠地允许在垂直方向上建立辅助磁性层中的磁化。 当磁通量沿垂直于磁记录层表面的垂直方向流动时，磁通量在垂直方向上流过磁记录层。 因此磁化在磁记录层中沿垂直方向可靠地建立。 因此，较强的强度的磁场在垂直方向从磁记录层泄漏出来。
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公开(公告)号：US07402348B2
公开(公告)日：2008-07-22
申请号：US11088241
申请日：2005-03-23
申请人： Hiroto Takeshita , Maki Maeda , Takuya Uzumaki
发明人： Hiroto Takeshita , Maki Maeda , Takuya Uzumaki
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/012 , G11B5/656 , G11B2005/0029 , Y10T428/24975
摘要： A magnetic recording layer is formed on an auxiliary magnetic layer in a perpendicular magnetic recording medium. The auxiliary magnetic layer has the axis of easy magnetization in the vertical direction perpendicular to the surface of a substrate. The perpendicular magnetic recording medium reliably allows establishment of the magnetization in the auxiliary magnetic layer in the vertical direction. When a magnetic flux flows along the vertical direction perpendicular to the surface of the magnetic recording layer, the magnetic flux flows across the magnetic recording layer in the vertical direction. The magnetization is thus reliably established in the magnetic recording layer in the vertical direction. The magnetic field of a stronger intensity is thus leaked out of the magnetic recording layer in the vertical direction.
摘要翻译： 在垂直磁记录介质中的辅助磁性层上形成磁记录层。 辅助磁性层在垂直于衬底表面的垂直方向具有容易磁化的轴。 垂直磁记录介质可靠地允许在垂直方向上建立辅助磁性层中的磁化。 当磁通量沿垂直于磁记录层表面的垂直方向流动时，磁通量在垂直方向上流过磁记录层。 因此磁化在磁记录层中沿垂直方向可靠地建立。 因此，较强的强度的磁场在垂直方向从磁记录层泄漏出来。
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公开(公告)号：US06809893B2
公开(公告)日：2004-10-26
申请号：US09770988
申请日：2001-01-26
IPC分类号： G11B2736
CPC分类号： G11B27/36 , G11B5/02 , G11B5/09 , G11B20/10009 , G11B2005/001 , G11B2020/183 , G11B2220/20 , G11B2220/216
摘要： A storage system has a storage medium, a head, and a control unit for carrying out refresh processing. A refresh operation extracts data that needs to be refreshed by measuring the read-out output level of target data. Then, data requiring refresh is re-recorded to the storage medium by the head. Because an actual data level is observed, it is possible to accurately detect refresh target data, and because there is no need for a reference area, it is possible to prevent a reduction in storage capacity.
摘要翻译： 存储系统具有用于进行刷新处理的存储介质，头部和控制单元。 刷新操作通过测量目标数据的读出输出级别来提取需要刷新的数据。 然后，需要刷新的数据由头部重新记录到存储介质。 由于观察到实际的数据电平，因此可以精确地检测刷新目标数据，并且由于不需要参考区域，因此可以防止存储容量的降低。
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公开(公告)号：US07258893B2
公开(公告)日：2007-08-21
申请号：US10704362
申请日：2003-11-07
申请人： Hiroto Takeshita , Takuya Uzumaki
发明人： Hiroto Takeshita , Takuya Uzumaki
CPC分类号： B82Y30/00 , B82Y10/00 , G11B5/732 , G11B5/7325 , G11B5/8404
摘要： A method of fabricating a magnetic recording medium is disclosed, including a monomolecular film formation step of forming a monomolecular film on a substrate and a magnetic film formation step of forming on the monomolecular film a magnetic film for recording magnetic information. In the monomolecular film formation step, it is preferable to form a perylene-based organic monomolecular film.
摘要翻译： 公开了一种制造磁记录介质的方法，包括在基板上形成单分子膜的单分子膜形成步骤和在单分子膜上形成用于记录磁信息的磁性膜的磁性膜形成步骤。 在单分子膜形成工序中，优选形成苝系有机单分子膜。
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公开(公告)号：US06770386B1
公开(公告)日：2004-08-03
申请号：US09654487
申请日：2000-09-01
IPC分类号： G11B566
CPC分类号： G11B5/82 , G11B5/012 , G11B5/74 , G11B2005/0021 , Y10S428/90 , Y10T428/2495
摘要： A magnetic recording medium with a high recording density has a first ferromagnetic layer, a non-magnetic layer, and a second ferromagnetic layer successively deposited as the recording layer on a non-magnetic substrate. The recording layer is heated in concentric circular shapes to divide it into regions in which the magnetic interactions between the ferromagnetic layers exhibit ferromagnetism and regions that exhibit anti-ferromagnetism. The ferromagnetic regions are used for recording tracks, and the anti-ferromagnetic regions function as guard bands. In this manner track density is increased without roughening the surface of the recording medium.
摘要翻译： 具有高记录密度的磁记录介质具有在非磁性基片上作为记录层连续沉积的第一铁磁层，非磁性层和第二铁磁层。 记录层被加热成同心圆形以将其分成铁磁层之间的磁相互作用显示出铁磁性的区域和表现出抗铁磁性的区域。 铁磁区域用于记录轨道，反铁磁区域用作保护带。 以这种方式，轨道密度增加而不会使记录介质的表面变粗糙。
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9.发明申请公开(公告)号：US20090047448A1
公开(公告)日：2009-02-19
申请号：US12253786
申请日：2008-10-17
申请人： Sanae Shimizu , Daiju Kaneko , Takuya Uzumaki , Atsushi Tanaka
发明人： Sanae Shimizu , Daiju Kaneko , Takuya Uzumaki , Atsushi Tanaka
IPC分类号： H01F1/12
摘要： A soft magnetic thin film in which the recording magnetic field in the perpendicular direction can be preferentially intensified and sharply controlled when the thin film is applied to a perpendicular magnetic recording medium is provided. This soft magnetic thin film can be obtained by immersing a substrate into an electroless plating bath that contains a Co ion, Fe ion, and Ni ion as metal ions, as well as a completing agent and a boron-type reducing agent, wherein the content ratios of the metal ions on the mole basis are 0.15≦ (Ni ion amount/the amount of total metal ions) ≦0.40, 0.50≦ (Co ion amount/the amount of total metal ions) ≦0.80, and 0.05≦ (Fe ion amount/the amount of total metal ions) ≦0.15; and carrying out electroless plating in a magnetic field in a range of 5-2,000 Oe given in a direction parallel to the surface of said substrate.
摘要翻译： 提供了一种软磁性薄膜，其中当将薄膜施加到垂直磁记录介质时，其中垂直方向上的记录磁场可以被优先增强和显着控制。 该软磁性薄膜可以通过将基板浸渍到含有作为金属离子的Co离子，Fe离子和Ni离子的化学镀浴中以及完成剂和硼型还原剂而获得，其中含量 金属离子的摩尔比为0.15 <=（Ni离子量/总金属离子的量）<= 0.40，0.50 <=（Co离子量/总金属离子的量）<= 0.80，0.05 <=（Fe离子量/总金属离子的量）<= 0.15; 并且在平行于所述衬底的表面的方向上给出的5-2,000Oe范围内的磁场中进行化学镀。
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公开(公告)号：US20070190365A1
公开(公告)日：2007-08-16
申请号：US11441087
申请日：2006-05-26
摘要： The present invention provides a novel discrete track medium having a high magnetic recording density and manufacturing method therefor. This magnetic recording medium is a disk-shaped magnetic recording medium comprising a soft magnetic layer, a magnetic layer thereover, and an intermediate layer directly under the magnetic recording layer, wherein the magnetic recording layer comprises a plurality of magnetic recording tracks arranged in the radial direction of the magnetic recording medium, and each magnetic recording track is separated from the other in the radial direction of the disk by concave sections and convex sections formed alternately on the upper surface of the intermediate layer in the radial direction of the disk.
摘要翻译： 本发明提供了一种具有高磁记录密度的新型离散轨道介质及其制造方法。 这种磁记录介质是一种盘形磁记录介质，其包括软磁层，其上的磁性层和直接位于磁记录层下面的中间层，其中磁记录层包括排列在径向上的多个磁记录磁道 磁记录介质的方向，并且每个磁记录磁道通过在盘的径向上交替地形成在中间层的上表面上的凹部和凸部而在盘的径向方向上彼此分离。
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