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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：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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3.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：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：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：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：US20100053811A1
公开(公告)日：2010-03-04
申请号：US12481949
申请日：2009-06-10
申请人： Hiroto Takeshita
发明人： Hiroto Takeshita
IPC分类号： G11B5/127
CPC分类号： G11B5/82 , G11B5/314 , G11B5/667 , G11B2005/001 , G11B2005/0021
摘要： A magnetic storage apparatus includes a magnetic storage medium including a recording layer, and a backing layer including a portion having a Curie temperature lower than that of the recording layer, a recording head that generates a magnetic field for recording from a side of the recording layer opposite to another side on which the backing layer is provided, and a heater unit heating at least a part of an area in proximity to a target area for recording by the recording head.
摘要翻译： 一种磁存储装置，包括：包括记录层的磁存储介质和包括居里温度低于记录层的居里点的背衬层;记录头，其从记录层的一侧产生用于记录的磁场; 与设置有背衬层的另一侧相对，以及加热单元，加热由记录头记录的目标区域附近的区域的至少一部分。
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9.发明授权公开(公告)号：US08329249B2
公开(公告)日：2012-12-11
申请号：US12402032
申请日：2009-03-11
申请人： Hiroto Takeshita
发明人： Hiroto Takeshita
摘要： Although dots and servo patterns are made of the same magnetic material, the dots have a relatively low coercive force so as to allow data deletion and rewrite by a magnetic head, while the servo patterns have a high coercive force compared with the coercive force of the dots. The coercive force of the servo patterns is strong enough so as to eliminate the influence of shape magnetic anisotropy.
摘要翻译： 虽然点和伺服图案由相同的磁性材料制成，但是这些点具有较低的矫顽力，以便允许数据被磁头删除和改写，而伺服模式与矫顽力相比具有较高的矫顽力 圆点 伺服模式的矫顽力足够强大，以消除形状磁各向异性的影响。
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公开(公告)号：US06277484B1
公开(公告)日：2001-08-21
申请号：US09167837
申请日：1998-10-07
IPC分类号： G11B566
CPC分类号： G11B5/66 , Y10S428/90 , Y10T428/265
摘要： A magnetic recording medium using a substrate, such as a glass substrate, and having, in combination, superior magnetic and magnetic recording properties and good adhesion of a magnetic layer to the substrate. The magnetic recording medium has an intermediate layer of chromium between the substrate and an underlayer of Ni-based non-magnetic material on which a magnetic layer of Co-based magnetic alloy is superimposed. A method of producing the magnetic recording medium is also disclosed, wherein each of the layers is formed by a sputtering process at a sufficient pressure to promote granular growth of crystals of the layer.
摘要翻译： 使用诸如玻璃基板的基板的磁记录介质，并且具有优异的磁记录性能和磁记录性能以及磁性层与基板的良好粘附性。 该磁记录介质在衬底与叠层有Co基磁性合金磁性层的Ni基非磁性材料的底层之间具有铬的中间层。 还公开了一种制造磁记录介质的方法，其中每个层通过溅射工艺在足够的压力下形成以促进该层的晶体的颗粒生长。
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