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31. 发明授权

US06808824B2 Perpendicular magnetic recording media 失效
标题翻译：垂直磁记录介质
公开(公告)号：US06808824B2
公开(公告)日：2004-10-26
申请号：US10225158
申请日：2002-08-22
申请人： Kiwamu Tanahashi , Atsushi Kikugawa , Noboru Shimizu , Yukio Honda , Yuzuru Hosoe
发明人： Kiwamu Tanahashi , Atsushi Kikugawa , Noboru Shimizu , Yukio Honda , Yuzuru Hosoe
IPC分类号： G11B5667
CPC分类号： G11B5/66 , Y10T428/12465 , Y10T428/12861 , Y10T428/12875 , Y10T428/12986 , Y10T428/265
摘要： There is provided a perpendicular magnetic recording medium comprising a non-magnetic layer having a face-centered cubic structure, an antiferromagnetic layer provided on the non-magnetic layer, a soft magnetic underlayer provided on the antiferromagnetic layer, and a perpendicular recording layer provided on the soft magnetic underlayer, which magnetic recording medium makes it possible to realize a recording density not less than 50 Gb/in2 and makes the error rate thereof low while suppressing the spike noise.
摘要翻译：提供了一种垂直磁记录介质，其包括具有面心立方结构的非磁性层，设置在非磁性层上的反铁磁层，设置在反铁磁层上的软磁性底层和设置在反铁磁层上的垂直记录层软磁性底层，该磁记录介质使得可以实现不小于50Gb / in2的记录密度，并且在抑制尖峰噪声的同时使其误码率低。

32. 发明授权

US06583958B1 Magnetic recording medium and magnetic storage system using same 有权
标题翻译：磁记录介质和磁存储系统使用相同
公开(公告)号：US06583958B1
公开(公告)日：2003-06-24
申请号：US09654307
申请日：2000-09-01
申请人： Hiroyuki Suzuki , Yuzuru Hosoe , Kiwamu Tanahashi
发明人： Hiroyuki Suzuki , Yuzuru Hosoe , Kiwamu Tanahashi
IPC分类号： G11B582
CPC分类号： G11B5/656 , G11B5/00 , G11B2005/0002 , G11B2005/001
摘要： Provided are a low-noise, high-performance magnetic recording medium obtained by fining the size of the grains in a magnetic film, and a magnetic recording medium of low thermal demagnetization obtained by controlling the magnetic grain size in a small range. Simultaneously provided is a large-capacity magnetic storage system capable of high-density recording with a recording density exceeding 20 Gb/inch2. In a magnetic recording medium in which a magnetic layer is formed on a substrate via an underlayer, the magnetic layer is formed of an alloy containing cobalt as the main constituents and containing boron, chromium and germanium or containing phosphorus, chromium and germanium as additives of the alloy.
摘要翻译：提供了通过使磁性膜中的晶粒尺寸变细而获得的低噪声，高性能的磁记录介质，以及通过将磁性粒径控制在小范围内而获得的低热退磁的磁记录介质。同时提供能够以超过20Gb /英寸2的记录密度进行高密度记录的大容量磁存储系统。在其中通过底层在基板上形成磁性层的磁记录介质中，磁性层由含有钴作为主要成分的合金形成并含有硼，铬和锗或含有磷，铬和锗作为添加剂的添加剂合金。

33. 发明授权

US07651795B2 Perpendicular magnetic recording medium and manufacturing of the same 失效
标题翻译：垂直磁记录介质和制造相同
公开(公告)号：US07651795B2
公开(公告)日：2010-01-26
申请号：US11227675
申请日：2005-09-14
申请人： Ichiro Tamai , Ikuko Takekuma , Yoshiyuki Hirayama , Yuzuru Hosoe , Yoshinori Honda
发明人： Ichiro Tamai , Ikuko Takekuma , Yoshiyuki Hirayama , Yuzuru Hosoe , Yoshinori Honda
IPC分类号： G11B5/65
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/656
摘要： Embodiments of the embodiment are directed to reducing the inter-granular exchange coupling of an oxide granular medium and obtaining a high media S/N value, resulting in an areal recording density greater than 23 gigabits per square centimeter or more being achieved. In one embodiment, a magnetic recording medium comprises a structure laminating a soft-magnetic underlayer, a lower intermediate layer including Ru, an upper intermediate layer consisting of Ru crystal grains and oxide crystal grain boundaries, a magnetic recording layer consisting of crystal grains and oxide crystal grain boundaries, in order, on a substrate, growing crystal grains of the magnetic recording layer epitaxially on the Ru crystal grains of the upper intermediate layer, and growing the crystal grain boundaries of the magnetic recording layer on the crystal grain boundaries of the upper intermediate layer.
摘要翻译：实施例的实施例涉及减少氧化物颗粒介质的颗粒间交换耦合并获得高介质S / N值，导致实现大于23千兆比特/平方厘米或更大的面积记录密度。在一个实施例中，磁记录介质包括层压软磁性底层，包含Ru的下中间层，由Ru晶粒和氧化物晶界组成的上中间层的结构，由晶粒和氧化物组成的磁记录层晶粒边界依次在衬底上，外延地在上层中间层的Ru晶粒上生长磁记录层的晶粒，并且使上述记录层的晶界上的磁记录层的晶界生长中间层。

34. 发明授权

US06692843B2 Magnetic recording medium, method of fabricating magnetic recording medium, and magnetic storage 失效
标题翻译：磁记录介质，制造磁记录介质的方法和磁存储
公开(公告)号：US06692843B2
公开(公告)日：2004-02-17
申请号：US09784078
申请日：2001-02-16
申请人： Yoshibumi Matsuda , Akira Ishikawa , Yotsuo Yahisa , Yuzuru Hosoe , Tetsuya Kanbe , Koji Sakamoto
发明人： Yoshibumi Matsuda , Akira Ishikawa , Yotsuo Yahisa , Yuzuru Hosoe , Tetsuya Kanbe , Koji Sakamoto
IPC分类号： G11B573
CPC分类号： G11B5/7325 , G11B5/8404 , Y10T428/1266 , Y10T428/12667
摘要： A magnetic recording medium having first undercoating layers 40, 40′ formed directly or via substrate face undercoating layers on a substrate 40, second undercoating layers 42, 42′ directly formed on the first undercoating layers 40, 40′, magnetic films 43, 43′ formed on the second undercoating layers 42, 42′, and protective films 44, 44′ formed on the magnetic films 43, 43′. Clusters having a large amount of oxygen are dispersed on the boundary face of the first and second undercoating layers. Preferably, the first undercoating layer is made of an alloy which includes two kinds of elements in which the difference between oxide formation standard free energies &Dgr;G° of the elements at the temperature of 250° C. is large.
摘要翻译：一种磁记录介质，其具有直接形成在衬底40上的衬底表面底涂层形成的第一底涂层40,40'，直接形成在第一底涂层40,40'上的第二底涂层42,42'，磁性膜43,43' 形成在第二底涂层42,42'上，以及形成在磁性膜43,43'上的保护膜44,44'。具有大量氧的簇分散在第一和第二底涂层的边界面上。优选地，第一底涂层由包含两种元素的合金制成，其中在250℃的温度下元素的氧化物形成标准自由能的差ΔG°大。

35. 发明申请

US20050227120A1 Magnetic recording medium and magnetic recording apparatus 有权
标题翻译：磁记录介质和磁记录装置
公开(公告)号：US20050227120A1
公开(公告)日：2005-10-13
申请号：US11105045
申请日：2005-04-12
申请人： Takayuki Ichihara , Atsushi Nakamura , Ichiro Tamai , Yuzuru Hosoe
发明人： Takayuki Ichihara , Atsushi Nakamura , Ichiro Tamai , Yuzuru Hosoe
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/667 , G11B5/73 , G11B5/738 , H01F10/16 , H01F10/30
CPC分类号： G11B5/667 , G11B5/66 , G11B5/7325
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium capable of reconciling a high recording density with high thermal stability, and having a high write-ability while maintaining high magnetic anisotropy energy. In one embodiment, a perpendicular magnetic recording medium has a soft-magnetic underlayer, and magnetic recording layers, and the magnetic recording layers comprises a first recording layer containing magnetic grains oriented in a direction normal to a medium plane, and a second recording layer containing magnetic grains tilted in a cross-track direction. There can be provided a perpendicular magnetic recording medium resistant to thermal fluctuation, small in medium noise, and excellent in write-ability.
摘要翻译：本发明的实施方案提供了一种垂直磁记录介质，其能够调和高记录密度和高热稳定性，并且具有高的写入能力，同时保持高的磁各向异性能量。在一个实施例中，垂直磁记录介质具有软磁性底层和磁记录层，并且磁记录层包括含有沿垂直于介质平面的方向取向的磁性颗粒的第一记录层和含有磁性晶粒沿横向方向倾斜。可以提供耐热波动，中等噪声小，写入性优异的垂直磁记录介质。

36. 发明授权

US07556871B2 Magnetic recording medium containing first and second recording layers, each layer containing a columnar structure 有权
标题翻译：含有第一和第二记录层的磁记录介质，每层包含柱状结构
公开(公告)号：US07556871B2
公开(公告)日：2009-07-07
申请号：US11105045
申请日：2005-04-12
申请人： Takayuki Ichihara , Atsushi Nakamura , Ichiro Tamai , Yuzuru Hosoe
发明人： Takayuki Ichihara , Atsushi Nakamura , Ichiro Tamai , Yuzuru Hosoe
IPC分类号： G11B5/66
CPC分类号： G11B5/667 , G11B5/66 , G11B5/7325
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium capable of reconciling a high recording density with high thermal stability, and having a high write-ability while maintaining high magnetic anisotropy energy. In one embodiment, a perpendicular magnetic recording medium has a soft-magnetic underlayer, and magnetic recording layers, and the magnetic recording layers comprises a first recording layer containing magnetic grains oriented in a direction normal to a medium plane, and a second recording layer containing magnetic grains tilted in a cross-track direction. There can be provided a perpendicular magnetic recording medium resistant to thermal fluctuation, small in medium noise, and excellent in write-ability.
摘要翻译：本发明的实施方案提供了一种垂直磁记录介质，其能够调和高记录密度和高热稳定性，并且具有高的写入能力，同时保持高的磁各向异性能量。在一个实施例中，垂直磁记录介质具有软磁性底层和磁记录层，并且磁记录层包括含有沿垂直于介质平面的方向取向的磁性颗粒的第一记录层和含有磁性晶粒沿横向方向倾斜。可以提供耐热波动，中等噪声小，写入性优异的垂直磁记录介质。

37. 发明申请

US20060057431A1 Perpendicular magnetic recording medium and manufacturing of the same 失效
标题翻译：垂直磁记录介质和制造相同
公开(公告)号：US20060057431A1
公开(公告)日：2006-03-16
申请号：US11227675
申请日：2005-09-14
申请人： Ichiro Tamai , Ikuko Takekuma , Yoshiyuki Hirayama , Yuzuru Hosoe , Yoshinori Honda
发明人： Ichiro Tamai , Ikuko Takekuma , Yoshiyuki Hirayama , Yuzuru Hosoe , Yoshinori Honda
IPC分类号： G11B5/66 , C23C14/00
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/656
摘要： Embodiments of the embodiment are directed to reducing the inter-granular exchange coupling of an oxide granular medium and obtaining a high media S/N value, resulting in an areal recording density greater than 23 gigabits per square centimeter or more being achieved. In one embodiment, a magnetic recording medium comprises a structure laminating a soft-magnetic underlayer, a lower intermediate layer including Ru, an upper intermediate layer consisting of Ru crystal grains and oxide crystal grain boundaries, a magnetic recording layer consisting of crystal grains and oxide crystal grain boundaries, in order, on a substrate, growing crystal grains of the magnetic recording layer epitaxially on the Ru crystal grains of the upper intermediate layer, and growing the crystal grain boundaries of the magnetic recording layer on the crystal grain boundaries of the upper intermediate layer.
摘要翻译：实施例的实施例涉及减少氧化物颗粒介质的颗粒间交换耦合并获得高介质S / N值，导致实现大于23千兆比特/平方厘米或更大的面积记录密度。在一个实施例中，磁记录介质包括层压软磁性底层，包含Ru的下中间层，由Ru晶粒和氧化物晶界组成的上中间层的结构，由晶粒和氧化物组成的磁记录层晶粒边界依次在衬底上，外延地在上层中间层的Ru晶粒上生长磁记录层的晶粒，并且使上述记录层的晶界上的磁记录层的晶界生长中间层。

38. 发明申请

US20050058854A1 Perpendicular magnetic recording medium and manufacturing of the same 审中-公开
标题翻译：垂直磁记录介质和制造相同
公开(公告)号：US20050058854A1
公开(公告)日：2005-03-17
申请号：US10875601
申请日：2004-06-25
申请人： Ikuko Takekuma , Hiroyuki Nakagawa , Ichiro Tamai , Yoshiyuki Hirayama , Yuzuru Hosoe
发明人： Ikuko Takekuma , Hiroyuki Nakagawa , Ichiro Tamai , Yoshiyuki Hirayama , Yuzuru Hosoe
IPC分类号： G11B5/738 , G11B5/64 , G11B5/65 , G11B5/667 , G11B5/73 , G11B5/84 , G11B5/851 , G11B7/26
CPC分类号： G11B5/667 , G11B5/656
摘要： Disclosed here is a perpendicular magnetic recording medium for realizing a high media S/N value without degrading the magnetic isolation of crystal grains from each another. The perpendicular magnetic recording medium comprises a substrate, a soft magnetic underlayer formed on the substrate, an intermediate layer formed on the soft magnetic underlayer, and a magnetic recording layer formed on the intermediate layer. The intermediate layer consists of at least two or more layers and contains Ru or an Ru alloy and the magnetic recording layer is made of a material containing a CoCrPt alloy and oxygen. The crystallo graphic orientation of the recording layer can be improved enough without increasing the crystal grain size if a full width at half-maximum Δθ50 of the Rocking curves of the Ru (0002) diffraction peak measured by an X-ray diffraction method is 5° and under.
摘要翻译：这里公开的是用于实现高介质S / N值而不降低晶粒的磁隔离的垂直磁记录介质。垂直磁记录介质包括基板，形成在基板上的软磁性底层，形成在软磁性底层上的中间层和形成在中间层上的磁记录层。中间层由至少两层或更多层组成，并含有Ru或Ru合金，磁记录层由含有CoCrPt合金和氧的材料制成。如果通过X射线衍射法测量的Ru（0002）衍射峰的摇摆曲线的半最大值Deltatheta50的全宽为5°，则记录层的结晶图形取向可以足够改善，而不增加晶粒尺寸和下。

39. 发明授权

US06197367B1 Magnetic recording medium, method of fabricating magnetic recording medium, and magnetic storage 失效
标题翻译：磁记录介质，制造磁记录介质的方法和磁存储
公开(公告)号：US06197367B1
公开(公告)日：2001-03-06
申请号：US08960751
申请日：1997-10-29
申请人： Yoshibumi Matsuda , Akira Ishikawa , Yotsuo Yahisa , Yuzuru Hosoe , Tetsuya Kanbe , Koji Sakamoto
发明人： Yoshibumi Matsuda , Akira Ishikawa , Yotsuo Yahisa , Yuzuru Hosoe , Tetsuya Kanbe , Koji Sakamoto
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/8404 , Y10T428/1266 , Y10T428/12667
摘要： A magnetic recording medium having first undercoating layers 40, 40′ formed directly or via substrate face undercoating layers on a substrate 40, second undercoating layers 42, 42′ directly formed on the first undercoating layers 40, 40′, magnetic films 43, 43′ formed on the second undercoating layers 42, 42′, and protective films 44, 44′ formed on the magnetic films 43, 43′. Clusters having a large amount of oxygen are dispersed on the boundary face of the first and second undercoating layers. Preferably, the first undercoating layer is made of an alloy which includes two kinds of elements in which the difference between oxide formation standard free energies &Dgr;G° of the elements at the temperature of 250° C. is large.
摘要翻译：一种磁记录介质，其具有直接形成在衬底40上的衬底表面底涂层形成的第一底涂层40,40'，直接形成在第一底涂层40,40'上的第二底涂层42,42'，磁性膜43,43' 形成在第二底涂层42,42'上，以及形成在磁性膜43,43'上的保护膜44,44'。具有大量氧的簇分散在第一和第二底涂层的边界面上。优选地，第一底涂层由包含两种元素的合金制成，其中在250℃的温度下元素的氧化物形成标准自由能DELTAG°之间的差异大。

40. 发明授权

US06613428B2 Magnetic recording medium and magnetic recording and reproducing apparatus wherein the magnetic layer has a fluctuation of field; A or Hf of not less than 30 Oersteds 失效
标题翻译：磁记录介质和磁记录和再现装置，其中磁层具有磁场的波动; A或Hf不小于30奥斯特
公开(公告)号：US06613428B2
公开(公告)日：2003-09-02
申请号：US09849404
申请日：2001-05-07
申请人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
发明人： Kazusuke Yamanaka , Tomoo Yamamoto , Yuzuru Hosoe , Nobuyuki Inaba , Yasutaro Uesaka , Masaaki Futamoto , Yoshibumi Matsuda , Kenji Furusawa , Shinji Narishige
IPC分类号： G11B564
CPC分类号： G11B5/64 , Y10T428/12465 , Y10T428/12986 , Y10T428/265 , Y10T428/31
摘要： A thin film magnetic recording medium including a magnetic layer having a fluctuation field defined as S/Xirr, where S is magnetic viscosity and Xirr is irreversible susceptibility Xirr. The fluctuation field of the magnetic layer is not less than 15 oersteds.
摘要翻译：一种薄膜磁记录介质，包括具有定义为S / Xirr的波动场的磁性层，其中S是磁粘度和Xirr是不可逆的磁化率Xirr。磁性层的波动场不小于15奥斯特。

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