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1.发明申请Magnetic Recording Medium, Method Of Manufacturing Therefor, And Magnetic Read/Write Apparatus 审中-公开磁记录介质，其制造方法和磁读/写装置公开(公告)号：US20080057348A1
公开(公告)日：2008-03-06
申请号：US10541905
申请日：2004-01-14
申请人： Kenji Shimizu , Akira Sakawaki , Kazuo Kobayashi , Nguyen Tien Duong , Hiroshi Sakai , Takashi Hikosaka , Soichi Oikawa , Tomoyuki Maeda , Futoshi Nakamura
发明人： Kenji Shimizu , Akira Sakawaki , Kazuo Kobayashi , Nguyen Tien Duong , Hiroshi Sakai , Takashi Hikosaka , Soichi Oikawa , Tomoyuki Maeda , Futoshi Nakamura
CPC分类号： G11B5/667 , G11B5/65 , G11B5/656 , G11B5/7325 , G11B5/8404
摘要： A soft magnetic undercoat film, a first undercoat film, a second undercoat film, a perpendicular magnetic recording film, and a protective film are provided on a non-magnetic substrate, and the first undercoat film consists of Pt, Pd, or an alloy including at least one among these, and the second undercoat film consists of Ru or an Ru alloy.
摘要翻译： 在非磁性基板上设置软磁性底涂层，第一底涂膜，第二底涂膜，垂直磁记录膜和保护膜，第一底涂层由Pt，Pd或包含 其中至少一个，第二底涂膜由Ru或Ru合金组成。
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公开(公告)号：US07252896B2
公开(公告)日：2007-08-07
申请号：US10788259
申请日：2004-02-27
申请人： Futoshi Nakamura , Takashi Hikosaka , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
发明人： Futoshi Nakamura , Takashi Hikosaka , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/667 , G11B5/7325
摘要： An orientation control layer having a granular structure is formed between a substrate and magnetic recording layer, contains a base material and grains dispersed in the base material, and having a thickness smaller than a grain size of the grains.
摘要翻译： 具有颗粒结构的取向控制层形成在基板和磁记录层之间，包含分散在基材中的基材和颗粒，其厚度小于晶粒的晶粒尺寸。
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3.发明授权公开(公告)号：US07166376B2
公开(公告)日：2007-01-23
申请号：US10786611
申请日：2004-02-26
申请人： Takashi Hikosaka , Futoshi Nakamura , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
发明人： Takashi Hikosaka , Futoshi Nakamura , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
IPC分类号： G11B5/66
摘要： A multi-layer including a magnetic recording layer and a high-magnetostriction layer having a magnetostriction constant larger than that of the magnetic recording layer is formed.
摘要翻译： 形成包括磁记录层和磁致伸缩常数大于磁记录层的磁致伸缩常数的高磁致伸缩层的多层。
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4.发明授权公开(公告)号：US07141316B2
公开(公告)日：2006-11-28
申请号：US10801563
申请日：2004-03-17
申请人： Takeshi Iwasaki , Takashi Hikosaka , Soichi Oikawa , Futoshi Nakamura , Tomoyuki Maeda , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
发明人： Takeshi Iwasaki , Takashi Hikosaka , Soichi Oikawa , Futoshi Nakamura , Tomoyuki Maeda , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
IPC分类号： G11B5/65
CPC分类号： G11B5/7325 , G11B5/656
摘要： Disclosed is a perpendicular magnetic recording medium in which an undercoating layer having crystal grains and a grain boundary material containing a carbide or boride is formed below a perpendicular magnetic recording layer, and another undercoating layer containing one of elements forming the crystal grains is formed below the aforementioned undercoating layer, and which can perform high□density recording by further decreasing the grain size of the perpendicular magnetic recording layer.
摘要翻译： 公开了一种垂直磁记录介质，其中具有晶粒的底涂层和含有碳化物或硼化物的晶界物质形成在垂直磁记录层的下方，并且在其下方形成另一个含有形成晶粒的元素的底涂层 通过进一步降低垂直磁记录层的晶粒尺寸，可以进行高密度记录。
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5.发明申请公开(公告)号：US20060204791A1
公开(公告)日：2006-09-14
申请号：US10552445
申请日：2004-04-07
申请人： Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
发明人： Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
摘要： A magnetic recording medium which is provided on a nonmagnetic substrate 1 with at least an orientation-controlling layer 3 for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer 4 having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate 1, and a protective layer 5 and characterized in that the perpendicularly magnetic layer 4 includes two or more magnetic layers, that at least one of the magnetic layers is a layer 4a having Co as a main component and containing Pt as well and containing an oxide and that at least another of the magnetic layers is a layer 4b having Co as a main component and containing Cr as well and containing no oxide.
摘要翻译： 一种磁性记录介质，其设置在至少具有用于控制直接形成的层的取向的取向控制层3的非磁性基板1上，具有相对于非磁性基板主要垂直取向的易磁化轴的垂直磁性层4 1和保护层5，其特征在于，垂直磁性层4包括两个或更多个磁性层，至少一个磁性层是具有Co作为主要成分并且含有Pt的层4a，并且含有 并且至少另一个磁性层是具有Co作为主要成分并且含有Cr并且不含氧化物的层4b。
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6.发明申请公开(公告)号：US20090141399A1
公开(公告)日：2009-06-04
申请号：US12274879
申请日：2008-11-20
申请人： Akira SAKAWAKI , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
发明人： Akira SAKAWAKI , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
摘要： A magnetic-recording medium which is provided on a nonmagnetic substrate with at least an orientation-controlling layer for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate, and a protective layer. The perpendicularly magnetic layer includes two or more magnetic layers, at least one of the magnetic layers is a layer having Co as a main component and containing Pt as well and containing an oxide, and at least another of the magnetic layers is a layer having Co as a main component and containing Cr as well and containing no oxide.
摘要翻译： 一种磁记录介质，其设置在至少具有用于控制直接形成的层的取向的取向控制层的非磁性基板上，具有相对于非磁性基板主要垂直取向的易磁化轴的垂直磁性层，以及 保护层。 垂直磁性层包括两个或更多个磁性层，至少一个磁性层是具有Co作为主要成分并且还含有Pt并含有氧化物的层，并且至少另一个磁性层是具有Co 作为主要成分，并含有Cr，也不含氧化物。
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7.发明授权公开(公告)号：US07867638B2
公开(公告)日：2011-01-11
申请号：US12274879
申请日：2008-11-20
申请人： Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
发明人： Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
摘要： A magnetic-recording medium which is provided on a nonmagnetic substrate with at least an orientation-controlling layer for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate, and a protective layer. The perpendicularly magnetic layer includes two or more magnetic layers, at least one of the magnetic layers is a layer having Co as a main component and containing Pt as well and containing an oxide, and at least another of the magnetic layers is a layer having Co as a main component and containing Cr as well and containing no oxide.
摘要翻译： 一种磁记录介质，其设置在至少具有用于控制直接形成的层的取向的取向控制层的非磁性基板上，具有相对于非磁性基板主要垂直取向的易磁化轴的垂直磁性层，以及 保护层。 垂直磁性层包括两个或更多个磁性层，至少一个磁性层是具有Co作为主要成分并且还含有Pt并含有氧化物的层，并且至少另一个磁性层是具有Co 作为主要成分，并含有Cr，也不含氧化物。
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8.发明授权公开(公告)号：US07470474B2
公开(公告)日：2008-12-30
申请号：US10552445
申请日：2004-04-07
申请人： Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
发明人： Akira Sakawaki , Kenji Shimizu , Kazuo Kobayashi , Hiroshi Sakai , Soichi Oikawa , Takeshi Iwasaki , Tomoyuki Maeda , Futoshi Nakamura
摘要： A magnetic recording medium which is provided on a nonmagnetic substrate 1 with at least an orientation-controlling layer 3 for controlling the orientation of a layer formed directly thereon, a perpendicularly magnetic layer 4 having an easily magnetizing axis oriented mainly perpendicularly relative to the nonmagnetic substrate 1, and a protective layer 5 and characterized in that the perpendicularly magnetic layer 4 includes two or more magnetic layers, that at least one of the magnetic layers is a layer 4a having Co as a main component and containing Pt as well and containing an oxide and that at least another of the magnetic layers is a layer 4b having Co as a main component and containing Cr as well and containing no oxide.
摘要翻译： 一种磁性记录介质，其设置在至少具有用于控制直接形成的层的取向的取向控制层3的非磁性基板1上，具有相对于非磁性基板主要垂直取向的易磁化轴的垂直磁性层4 1和保护层5，其特征在于，垂直磁性层4包括两个或多个磁性层，至少一个磁性层是具有Co作为主要成分并且含有Pt并且含有氧化物的层4a 并且至少另一个磁性层是具有Co作为主要成分并且含有Cr并且不含氧化物的层4b。
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9.发明授权公开(公告)号：US07132176B2
公开(公告)日：2006-11-07
申请号：US10626837
申请日：2003-07-25
申请人： Takeshi Iwasaki , Takashi Hikosaka , Soichi Oikawa , Futoshi Nakamura , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
发明人： Takeshi Iwasaki , Takashi Hikosaka , Soichi Oikawa , Futoshi Nakamura , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
IPC分类号： G11B5/66
摘要： A perpendicular magnetic recording medium includes a magnetic recording layer stacked on a substrate and having a first perpendicular magnetic recording layer containing cobalt, and a second perpendicular magnetic recording layer mainly containing a crystalline alloy which contains a rare earth element and a transition metal.
摘要翻译： 垂直磁记录介质包括堆叠在基板上并具有包含钴的第一垂直磁记录层的磁记录层和主要含有稀土元素和过渡金属的结晶合金的第二垂直磁记录层。
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公开(公告)号：US06902835B2
公开(公告)日：2005-06-07
申请号：US10454550
申请日：2003-06-05
申请人： Takashi Hikosaka , Takeshi Iwasaki , Futoshi Nakamura , Soichi Oikawa , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
发明人： Takashi Hikosaka , Takeshi Iwasaki , Futoshi Nakamura , Soichi Oikawa , Hiroshi Sakai , Kenji Shimizu , Akira Sakawaki
IPC分类号： G11B5/738 , G11B5/00 , G11B5/65 , G11B5/667 , G11B5/73 , G11B5/74 , G11B5/82 , G11B5/66 , G11B5/70
CPC分类号： G11B5/667 , G11B5/00 , G11B5/7325 , G11B5/74 , G11B5/82 , G11B2005/001 , G11B2005/0029 , Y10T428/265
摘要： A double layered perpendicular recording media having, between a soft magnetic layer and perpendicular magnetic recording layer, an alignment control layer containing an amorphous portion, a crystal size control layer, and an underlayer having one of a hexagonal closest packed structure and a face-centered cubic structure.
摘要翻译： 一种双层垂直记录介质，其在软磁层和垂直磁记录层之间具有包含非晶部分的取向控制层，晶体尺寸控制层和具有六方最密堆积结构和面心的 立方结构。
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