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11. 发明授权

US09159351B2 Perpendicular magnetic recording medium and method of manufacturing the same 有权
标题翻译：垂直磁记录介质及其制造方法
公开(公告)号：US09159351B2
公开(公告)日：2015-10-13
申请号：US12738201
申请日：2008-10-14
申请人： Kazuaki Sakamoto , Kong Kim , Takahiro Onoue , Masafumi Ishiyama , Teiichiro Umezawa , Kenji Ayama
发明人： Kazuaki Sakamoto , Kong Kim , Takahiro Onoue , Masafumi Ishiyama , Teiichiro Umezawa , Kenji Ayama
IPC分类号： G11B5/66 , G11B5/73
CPC分类号： G11B5/732 , G11B5/66 , G11B5/7325
摘要： A perpendicular magnetic recording medium includes a substrate, a soft magnetic layer, a pre-underlayer, an underlayer, and a main recording layer serving as a magnetic recording layer. The pre-underlayer contains seed crystal grains that serve as a base for crystal grains of the underlayer, and an addition substance that is added between the seed crystal grains and composed of an element having an atomic radius smaller than that of an element forming the seed crystal grains.
摘要翻译：垂直磁记录介质包括基板，软磁层，预底层，底层和用作磁记录层的主记录层。预底层包含用作底层晶粒的基底的籽晶粒，以及添加在籽晶粒之间并由原子半径小于形成种子的元素的元素构成的添加物质晶粒。

12. 发明申请

US20100279151A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME 有权
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：US20100279151A1
公开(公告)日：2010-11-04
申请号：US12738201
申请日：2008-10-14
申请人： Kazuaki Sakamoto , Kong Kim , Takahiro Onoue , Masafumi Ishiyama , Teiichiro Umezawa , Kenji Ayama
发明人： Kazuaki Sakamoto , Kong Kim , Takahiro Onoue , Masafumi Ishiyama , Teiichiro Umezawa , Kenji Ayama
IPC分类号： G11B5/667 , G11B5/84
CPC分类号： G11B5/732 , G11B5/66 , G11B5/7325
摘要： A perpendicular magnetic recording medium includes a substrate, a soft magnetic layer, a pre-underlayer, an underlayer, and a main recording layer serving as a magnetic recording layer. The pre-underlayer contains seed crystal grains that serve as a base for crystal grains of the underlayer, and an addition substance that is added between the seed crystal grains and composed of an element having an atomic radius smaller than that of an element forming the seed crystal grains.
摘要翻译：垂直磁记录介质包括基板，软磁层，预底层，底层和用作磁记录层的主记录层。预底层包含用作底层晶粒的基底的籽晶粒，以及添加在籽晶粒之间并由原子半径小于形成种子的元素的元素构成的添加物质晶粒。

13. 发明授权

US09240204B2 Perpendicular magnetic recording disc 有权
标题翻译：垂直磁记录盘
公开(公告)号：US09240204B2
公开(公告)日：2016-01-19
申请号：US13112323
申请日：2011-05-20
申请人： Teiichiro Umezawa , Takenori Kajiwara , Tokichiro Sato
发明人： Teiichiro Umezawa , Takenori Kajiwara , Tokichiro Sato
IPC分类号： G11B5/66 , C23C16/26
CPC分类号： G11B5/66 , C23C16/26
摘要： A perpendicular magnetic disk is provided. The disk includes, on a base and in the order from bottom, a first granular magnetic layer group including a plurality of magnetic layers each having a granular structure, a non-magnetic layer having Ru or a Ru alloy as a main component, a second granular magnetic layer group including a plurality of magnetic layers each having the granular structure, and an auxiliary recording layer having a CoCrPtRu alloy as a main component. Layers closer to a front surface among the plurality of magnetic layers included in the first granular magnetic layer group having an equal or smaller content of Pt. Layers closer to the front surface among the plurality of magnetic layers included in the second granular magnetic layer group having an equal or smaller content of Pt and having an equal or larger content of an oxide.
摘要翻译：提供垂直磁盘。该盘在基部上并且从底部开始依次包括具有粒状结构的多个磁性层的第一粒状磁性层组，具有Ru或Ru合金作为主要成分的非磁性层，第二包括具有颗粒结构的多个磁性层的粒状磁性层组以及以CoCrPtRu合金为主要成分的辅助记录层。更靠近Pt含量相同或更小的第一粒状磁性层组中包含的多个磁性层中的前表面。在具有等于或更小含量的Pt并且具有相等或更大含量的氧化物的第二粒状磁性层组中包含的多个磁性层中更靠近前表面的层。

14. 发明授权

US06670055B2 Magnetic recording medium and manufacturing method therefor 有权
标题翻译：磁记录介质及其制造方法
公开(公告)号：US06670055B2
公开(公告)日：2003-12-30
申请号：US09925573
申请日：2001-08-09
申请人： Hiroshi Tomiyasu , Junichi Horikawa , Teiichiro Umezawa , Kenji Ayama , Tomotaka Yokoyama
发明人： Hiroshi Tomiyasu , Junichi Horikawa , Teiichiro Umezawa , Kenji Ayama , Tomotaka Yokoyama
IPC分类号： G11B566
CPC分类号： G11B5/851 , G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12847
摘要： A magnetic recording medium that is high coersive force, hard to receive influence of thermal fluctuation, and brings about a considerable improvement of S/N ratio, and in which at least an underlayer and a magnetic layer are sequentially laminated on a substrate, wherein a pre-coat layer is interposed between said underlayer and said substrate and said pre-coat layer is constructed by sequentially laminating a lower layer containing Ni and P and an upper layer made of a Cr alloy.
摘要翻译：一种磁性记录介质，其具有高的强力，难以接受热波动的影响，并且导致S / N比的显着提高，并且其中至少底层和磁性层依次层压在基板上，其中预涂层介于所述底层和所述基材之间，并且所述预涂层通过依次层压含有Ni和P的下层和由Cr合金制成的上层来构造。

15. 发明申请

US20120189872A1 Perpendicular Magnetic Recording Disc 有权
标题翻译：垂直磁记录盘
公开(公告)号：US20120189872A1
公开(公告)日：2012-07-26
申请号：US13112323
申请日：2011-05-20
申请人： Teiichiro Umezawa , Takenori Kajiwara , Tokichiro Sato
发明人： Teiichiro Umezawa , Takenori Kajiwara , Tokichiro Sato
IPC分类号： G11B5/66 , B82Y25/00 , B82Y10/00
CPC分类号： G11B5/66 , C23C16/26
摘要： A perpendicular magnetic disk is provided. The disk includes, on a base and in the order from bottom, a first granular magnetic layer group including a plurality of magnetic layers each having a granular structure, a non-magnetic layer having Ru or a Ru alloy as a main component, a second granular magnetic layer group including a plurality of magnetic layers each having the granular structure, and an auxiliary recording layer having a CoCrPtRu alloy as a main component. Layers closer to a front surface among the plurality of magnetic layers included in the first granular magnetic layer group having an equal or smaller content of Pt. Layers closer to the front surface among the plurality of magnetic layers included in the second granular magnetic layer group having an equal or smaller content of Pt and having an equal or larger content of an oxide.
摘要翻译：提供垂直磁盘。该盘在基部上并且从底部开始依次包括具有粒状结构的多个磁性层的第一粒状磁性层组，具有Ru或Ru合金作为主要成分的非磁性层，第二包括具有颗粒结构的多个磁性层的粒状磁性层组以及以CoCrPtRu合金为主要成分的辅助记录层。更靠近Pt含量相同或更小的第一粒状磁性层组中包含的多个磁性层中的前表面。在具有等于或更小含量的Pt并且具有相等或更大含量的氧化物的第二粒状磁性层组中包含的多个磁性层中更靠近前表面的层。

16. 发明授权

US06759138B2 Antiferromagnetically coupled magnetic recording medium with dual-layered upper magnetic layer 有权
标题翻译：具有双层上磁层的反铁磁耦合磁记录介质
公开(公告)号：US06759138B2
公开(公告)日：2004-07-06
申请号：US10186723
申请日：2002-07-02
申请人： Hiroshi Tomiyasu , Keiji Moroishi , Teiichiro Umezawa , Kenji Ayama
发明人： Hiroshi Tomiyasu , Keiji Moroishi , Teiichiro Umezawa , Kenji Ayama
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/012 , G11B5/66 , G11B2005/0002 , G11B2005/001 , Y10T428/12646 , Y10T428/12847 , Y10T428/12854 , Y10T428/12861 , Y10T428/12868 , Y10T428/12931 , Y10T428/24355 , Y10T428/2495 , Y10T428/31
摘要： In a magnetic recording medium which includes a base body (1-4), first and second magnetic layers (5 and 7), each being of a ferromagnetic material, and a spacer layer (6) formed between the first and the second magnetic layers for inducing antiferromagnetic exchange interaction between the first and the second magnetic layers, the second magnetic layer located farther from the base body than the first magnetic layer includes a primary layer (72) and a secondary layer (71) located nearer to the base body than the primary layer. The primary layer has a primary anisotropic magnetic field while the secondary layer has a secondary anisotropic magnetic field which is smaller than the primary anisotropic magnetic field. The first magnetic layer is for controlling the antiferromagnetic exchange interaction.
摘要翻译：在包括基体（1-4）的磁记录介质中，每个都是铁磁材料的第一和第二磁性层（5和7）以及形成在第一和第二磁性层之间的间隔层（6）为了在第一和第二磁性层之间诱导反铁磁交换相互作用，位于比第一磁性层更远离基体的第二磁性层包括位于更靠近基体的主层（72）和次级层（71），比第主层。主层具有一次各向异性磁场，而次层具有小于一次各向异性磁场的次级各向异性磁场。第一磁性层用于控制反铁磁交换相互作用。

17. 发明授权

US08871368B2 Perpendicular magnetic recording medium and process for manufacture thereof 有权
标题翻译：垂直磁记录介质及其制造方法
公开(公告)号：US08871368B2
公开(公告)日：2014-10-28
申请号：US13119057
申请日：2009-09-16
申请人： Takahiro Onoue , Teiichiro Umezawa , Toshiaki Tachibana , Masafumi Ishiyama
发明人： Takahiro Onoue , Teiichiro Umezawa , Toshiaki Tachibana , Masafumi Ishiyama
IPC分类号： G11B5/66
CPC分类号： G11B5/65 , G11B5/66 , G11B5/72 , G11B5/8408
摘要： A perpendicular magnetic recording medium with SNR improved by reducing noise due to an auxiliary recording layer so that a higher recording density can be achieved. The perpendicular magnetic recording medium 100 includes a base, at least a magnetic recording layer 122 having a granular structure in which a non-magnetic grain boundary portion is formed between crystal particles grown in a columnar shape; a non-magnetic split layer 124 disposed on the magnetic recording layer 122 and containing Ru and oxygen; and an auxiliary recording layer 126 that is disposed on the split layer 124 and that is magnetically approximately continuous in an in-plane direction of a main surface of the base 110.
摘要翻译：通过减少由于辅助记录层引起的噪声而提高SNR的垂直磁记录介质，从而可以实现更高的记录密度。垂直磁记录介质100包括至少一个具有颗粒结构的磁记录层122，其中在以柱状形成的晶体颗粒之间形成非磁性晶界部分; 设置在磁记录层122上并含有Ru和氧的非磁性分离层124; 以及辅助记录层126，其设置在分离层124上，并且在基底110的主表面的面内方向上磁性近似连续。

18. 发明授权

US07208236B2 Magnetic recording medium with multi-portion carbon-based protection layer, and apparatus thereof 有权
标题翻译：具有多部分碳基保护层的磁记录介质及其装置
公开(公告)号：US07208236B2
公开(公告)日：2007-04-24
申请号：US11123065
申请日：2005-05-06
申请人： Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
发明人： Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
IPC分类号： G11B5/127 , G11B5/725
CPC分类号： G11B5/72 , Y10T428/1179 , Y10T428/265 , Y10T428/30
摘要： In a magnetic recording medium which comprises a substrate (1), a magnetic layer (3) formed on the substrate, a carbon-based protection layer (4) comprising carbon and formed on the magnetic layer, and a lubrication layer (5) formed on the carbon-based protection layer, the carbon-based protection layer comprises a hydrogenated carbon protection layer (4a) facing the magnetic layer and a nitrogenated carbon protection layer (4b) facing the lubrication layer. The hydrogenated carbon protection layer (4a) comprises carbon and hydrogen. The nitrogenated carbon protection layer (4b) includes no hydrogen but comprises carbon and nitrogen.
摘要翻译：在包括基板（1）的磁记录介质中，形成在基板上的磁性层（3），包含碳并形成在磁性层上的碳基保护层（4）以及形成的润滑层（5）在碳基保护层上，碳基保护层包括面向磁性层的氢化碳保护层（4a）和面向润滑层的氮化碳保护层（4b）。氢化碳保护层（4a）包含碳和氢。氮化碳保护层（4b）不包括氢，而是包括碳和氮。

19. 发明授权

US06946191B2 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US06946191B2
公开(公告)日：2005-09-20
申请号：US10370722
申请日：2003-02-24
申请人： Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
发明人： Takashi Morikawa , Teiichiro Umezawa , Hiroshi Tomiyasu , Masafumi Ishiyama
IPC分类号： G11B5/72
CPC分类号： G11B5/72 , Y10T428/1179 , Y10T428/265 , Y10T428/30
摘要： In a magnetic recording medium which comprises a substrate (1), a magnetic layer (3) formed on the substrate, a carbon-based protection layer (4) comprising carbon and formed on the magnetic layer, and a lubrication layer (5) formed on the carbon-based protection layer, the carbon-based protection layer comprises a hydrogenated carbon protection layer (4a) facing the magnetic layer and a nitrogenated carbon protection layer (4b) facing the lubrication layer. The hydrogenated carbon protection layer (4a) comprises carbon and hydrogen. The nitrogenated carbon protection layer (4b) includes no hydrogen but comprises carbon and nitrogen.
摘要翻译：在包括基板（1）的磁记录介质中，形成在基板上的磁性层（3），包含碳并形成在磁性层上的碳基保护层（4）和形成的润滑层（5）在碳基保护层上，碳基保护层包括面向磁性层的氢化碳保护层（4a）和面向润滑层的氮化碳保护层（4b）。氢化碳保护层（4a）包含碳和氢。氮化碳保护层（4b）不包括氢，而是包括碳和氮。

20. 发明申请

US20110212346A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM AND PROCESS FOR MANUFACTURE THEREOF 有权
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：US20110212346A1
公开(公告)日：2011-09-01
申请号：US13119057
申请日：2009-09-16
申请人： Takahiro Onoue , Teiichiro Umezawa , Toshiaki Tachibana , Masafumi Ishiyama
发明人： Takahiro Onoue , Teiichiro Umezawa , Toshiaki Tachibana , Masafumi Ishiyama
IPC分类号： G11B5/66 , G11B5/84 , B05D3/02 , B05D3/06 , B05D3/04 , B05D1/36 , C23C16/44
CPC分类号： G11B5/65 , G11B5/66 , G11B5/72 , G11B5/8408
摘要： An object of the present invention is to provide a perpendicular magnetic recording medium the SNR of which is improved by reducing noise thought to be due to an auxiliary recording layer so that a higher recording density can be achieved, and a method of manufacturing the same.In order to achieve the above object, a representative configuration of a perpendicular magnetic recording medium 100 according to the present invention includes, on a base, at least a magnetic recording layer 122 having a granular structure in which a non-magnetic grain boundary portion is formed between crystal particles grown in a columnar shape; a non-magnetic split layer 124 disposed on the magnetic recording layer 122 and containing Ru and oxygen; and an auxiliary recording layer 126 that is disposed on the split layer 124 and that is magnetically approximately continuous in an in-plane direction of a main surface of the base 110.
摘要翻译：本发明的目的是提供一种垂直磁记录介质，其通过降低由于辅助记录层而引起的噪声从而可以获得更高的记录密度来提高其SNR，及其制造方法。为了实现上述目的，根据本发明的垂直磁记录介质100的代表性构造在基底上至少包括具有非磁性晶界部分为非晶粒边界部分的颗粒结构的磁记录层122 在柱状生长的晶体颗粒之间形成; 设置在磁记录层122上并含有Ru和氧的非磁性分离层124; 以及辅助记录层126，其设置在分离层124上，并且在基底110的主表面的面内方向上磁性近似连续。

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