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1. 发明申请

US20060088734A1 Perpendicular magnetic recording medium for high density magnetic recording and manufacturing of the same 有权
公开(公告)号：US20060088734A1
公开(公告)日：2006-04-27
申请号：US11243012
申请日：2005-10-03
申请人： Reiko Arai , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki , Yoko Ogawa , Ikuko Takekuma
发明人： Reiko Arai , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki , Yoko Ogawa , Ikuko Takekuma
IPC分类号： G11B5/66 , B05D5/12
CPC分类号： G11B5/732 , G11B5/656 , G11B5/851
摘要： Embodiments of the invention are directed to a medium which provides high media S/N and good corrosion resistance. According to one embodiment, in a perpendicular magnetic recording medium at least comprising a soft-magnetic underlayer, a seed layer, an intermediate layer, a magnetic recording layer and an overcoat layer which are stacked over a substrate in order, the magnetic recording layer has a granular structure which includes many columnar grains of CoCrPt alloy and a grain boundary layer containing an oxide, the seed layer is made of TaNi alloy or TaTi alloy and the intermediate layer is made of Ru or Ru alloy which contains 80 at. % Ru or more.

2. 发明申请

US20060127703A1 Perpendicular magnetic recording medium for high density recording and manufacturing of the same 失效
标题翻译：用于高密度记录和制造的垂直磁记录介质
公开(公告)号：US20060127703A1
公开(公告)日：2006-06-15
申请号：US11295005
申请日：2005-12-05
申请人： Ikuko Takekuma , Reiko Arai , Yoko Ogawa , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki
发明人： Ikuko Takekuma , Reiko Arai , Yoko Ogawa , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki
IPC分类号： G11B5/66 , C23C14/00
CPC分类号： C23C14/568 , C23C14/025 , C23C14/0658 , C23C14/0688 , C23C14/584 , G11B5/65 , G11B5/732
摘要： Embodiments of the invention provide a medium which provides high media S/N and good corrosion resistance. According to one embodiment, in a perpendicular magnetic recording medium at least comprising a soft-magnetic underlayer, a seed layer, an intermediate layer, a magnetic recording layer and an overcoat layer which are stacked over a substrate in order, the magnetic recording layer has a granular structure which consists of many columnar grains of CoCrPt alloy and a grain boundary layer containing an oxide, the seed layer is made of TaNi alloy or TaTi alloy and the intermediate layer is made of Ru or Ru alloy which contains about 80 at. % Ru or more.
摘要翻译：本发明的实施方案提供了提供高介质S / N和良好耐腐蚀性的介质。根据一个实施例，在依次层叠在基板上的至少包括软磁性底层，种子层，中间层，磁记录层和覆盖层的垂直磁记录介质中，磁记录层具有由CoCrPt合金的许多柱状晶粒和含有氧化物的晶界层组成的粒状结构，种子层由TaNi合金或TaTi合金制成，中间层由含有约80at的Ru或Ru合金制成。％Ru或更多。

3. 发明授权

US07534507B2 Perpendicular magnetic recording medium for high density magnetic recording and manufacturing of the same 有权
标题翻译：垂直磁记录介质用于高密度磁记录和制造
公开(公告)号：US07534507B2
公开(公告)日：2009-05-19
申请号：US11243012
申请日：2005-10-03
申请人： Reiko Arai , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki , Yoko Ogawa , Ikuko Takekuma
发明人： Reiko Arai , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki , Yoko Ogawa , Ikuko Takekuma
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/656 , G11B5/851
摘要： Embodiments of the invention are directed to a medium which provides high media S/N and good corrosion resistance. According to one embodiment, in a perpendicular magnetic recording medium at least comprising a soft-magnetic underlayer, a seed layer, an intermediate layer, a magnetic recording layer and an overcoat layer which are stacked over a substrate in order, the magnetic recording layer has a granular structure which includes many columnar grains of CoCrPt alloy and a grain boundary layer containing an oxide, the seed layer is made of TaNi alloy or TaTi alloy and the intermediate layer is made of Ru or Ru alloy which contains 80 at. % Ru or more.
摘要翻译：本发明的实施方案涉及提供高介质S / N和良好耐腐蚀性的介质。根据一个实施例，在依次层叠在基板上的至少包括软磁性底层，种子层，中间层，磁记录层和覆盖层的垂直磁记录介质中，磁记录层具有包括许多CoCrPt合金的柱状晶粒和含有氧化物的晶界层的粒状结构，种子层由TaNi合金或TaTi合金制成，中间层由含有80at的Ru或Ru合金制成。％Ru或更多。

4. 发明授权

US07641989B2 Perpendicular magnetic recording medium for high density recording and manufacturing of the same 失效
标题翻译：用于高密度记录和制造的垂直磁记录介质
公开(公告)号：US07641989B2
公开(公告)日：2010-01-05
申请号：US11295005
申请日：2005-12-05
申请人： Ikuko Takekuma , Reiko Arai , Yoko Ogawa , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki
发明人： Ikuko Takekuma , Reiko Arai , Yoko Ogawa , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki
IPC分类号： G11B5/66
CPC分类号： C23C14/568 , C23C14/025 , C23C14/0658 , C23C14/0688 , C23C14/584 , G11B5/65 , G11B5/732
摘要： Embodiments of the invention provide a medium which provides high media S/N and good corrosion resistance. According to one embodiment, in a perpendicular magnetic recording medium at least comprising a soft-magnetic underlayer, a seed layer, an intermediate layer, a magnetic recording layer and an overcoat layer which are stacked over a substrate in order, the magnetic recording layer has a granular structure which consists of many columnar grains of CoCrPt alloy and a grain boundary layer containing an oxide, the seed layer is made of TaNi alloy or TaTi alloy and the intermediate layer is made of Ru or Ru alloy which contains about 80 at. % Ru or more.
摘要翻译：本发明的实施方案提供了提供高介质S / N和良好耐腐蚀性的介质。根据一个实施例，在依次层叠在基板上的至少包括软磁性底层，种子层，中间层，磁记录层和覆盖层的垂直磁记录介质中，磁记录层具有由CoCrPt合金的许多柱状晶粒和含有氧化物的晶界层组成的粒状结构，种子层由TaNi合金或TaTi合金制成，中间层由含有约80at的Ru或Ru合金制成。％Ru或更多。

5. 发明授权

US08802247B2 Perpendicular magnetic recording medium with high medium S/N 有权
标题翻译：具有高介质S / N的垂直磁记录介质
公开(公告)号：US08802247B2
公开(公告)日：2014-08-12
申请号：US11582878
申请日：2006-10-17
申请人： Hiroyuki Matsumoto , Mitsuhiro Shoda , Reiko Arai , Yuzuru Hosoe , Katsumi Mabuchi
发明人： Hiroyuki Matsumoto , Mitsuhiro Shoda , Reiko Arai , Yuzuru Hosoe , Katsumi Mabuchi
IPC分类号： G11B5/66 , G11B5/667
CPC分类号： G11B5/667
摘要： A medium having high medium S/N and excellent corrosion resistance is achieved. In one embodiment, an adhesion layer, a soft magnetic layer, an intermediate layer, a magnetic recording layer, and a protective layer are deposited, in order, on a substrate. The soft magnetic underlayer consists at least of two soft magnetic layers, the first soft magnetic layer formed on the recording layer side being composed of an amorphous alloy containing 85 at. % or less of Co, and the second soft magnetic layer formed on the substrate side being composed of an alloy containing more than 85 at. % of Co.
摘要翻译：实现了具有高介质S / N和优异耐腐蚀性的介质。在一个实施例中，粘附层，软磁层，中间层，磁记录层和保护层依次沉积在基板上。软磁性底层至少由两个软磁性层构成，记录层侧形成的第一软磁性层由含有85μm的非晶态合金构成。 Co以下的合金，由基板侧形成的第二软磁性层由含有85以上的合金构成。有限公司

6. 发明申请

US20070087226A1 Perpendicular magnetic recording medium with high medium S/N 有权
标题翻译：具有高介质S / N的垂直磁记录介质
公开(公告)号：US20070087226A1
公开(公告)日：2007-04-19
申请号：US11582878
申请日：2006-10-17
申请人： Hiroyuki Matsumoto , Mitsuhiro Shoda , Reiko Arai , Yuzuru Hosoe , Katsumi Mabuchi
发明人： Hiroyuki Matsumoto , Mitsuhiro Shoda , Reiko Arai , Yuzuru Hosoe , Katsumi Mabuchi
IPC分类号： G11B5/66
CPC分类号： G11B5/667
摘要： A medium having high medium S/N and excellent corrosion resistance is achieved. In one embodiment, an adhesion layer, a soft magnetic layer, an intermediate layer, a magnetic recording layer, and a protective layer are deposited, in order, on a substrate. The soft magnetic underlayer consists at least of two soft magnetic layers, the first soft magnetic layer formed on the recording layer side being composed of an amorphous alloy containing 85 at. % or less of Co, and the second soft magnetic layer formed on the substrate side being composed of an alloy containing more than 85 at. % of Co.
摘要翻译：实现了具有高介质S / N和优异耐腐蚀性的介质。在一个实施例中，依次将粘合层，软磁层，中间层，磁记录层和保护层沉积在基板上。软磁性底层至少由两个软磁性层构成，记录层侧形成的第一软磁性层由含有85μm的非晶态合金构成。 Co以下的合金，由基板侧形成的第二软磁性层由含有85个以上的合金构成。有限公司

7. 发明申请

US20080113221A1 Perpendicular magnetic recording medium and magnetic storage apparatus using the same 有权
标题翻译：垂直磁记录介质及使用其的磁存储装置
公开(公告)号：US20080113221A1
公开(公告)日：2008-05-15
申请号：US11985310
申请日：2007-11-13
申请人： Yoshiyuki Hirayama , Ichiro Tamai , Reiko Arai
发明人： Yoshiyuki Hirayama , Ichiro Tamai , Reiko Arai
IPC分类号： G11B5/33
CPC分类号： G11B5/65 , G11B5/7325 , G11B5/851 , Y10T428/11
摘要： Embodiments in accordance with the present invention help to obtain a perpendicular magnetic recording medium having a granular structure, excellent recording/reproducing properties, and excellent durability. According to one embodiment, a recording layer includes a layer which has crystal grains mainly composed of cobalt and crystal grain boundaries mainly composed of the oxide; the oxygen content of the recoding layer is changed in the film thickness direction; the oxygen content in the area in the vicinity of the interface between the recording layer and the intermediate layer is made lower than the oxygen content in the area in the vicinity of the center of the recording layer; and the oxygen content in the area in the vicinity of the interface between the recording layer and the protective layer is made lower than the oxygen content in the area in the vicinity of the center of the recording layer.
摘要翻译：根据本发明的实施例有助于获得具有颗粒结构的良好的记录/再现性能和优异的耐久性的垂直磁记录介质。根据一个实施例，记录层包括主要由钴构成的晶粒和主要由氧化物构成的晶界的层; 记录层的氧含量在膜厚方向上变化; 记录层和中间层之间的界面附近的区域中的氧含量低于记录层中心附近的区域中的氧含量; 并且将记录层和保护层之间的界面附近的区域中的氧含量设定得低于记录层中心附近的区域中的氧含量。

8. 发明授权

US07875373B2 Perpendicular magnetic recording medium and magnetic storage apparatus using the same 有权
标题翻译：垂直磁记录介质及使用其的磁存储装置
公开(公告)号：US07875373B2
公开(公告)日：2011-01-25
申请号：US11985310
申请日：2007-11-13
申请人： Yoshiyuki Hirayama , Ichiro Tamai , Reiko Arai
发明人： Yoshiyuki Hirayama , Ichiro Tamai , Reiko Arai
IPC分类号： G11B5/65
CPC分类号： G11B5/65 , G11B5/7325 , G11B5/851 , Y10T428/11
摘要： Embodiments in accordance with the present invention help to obtain a perpendicular magnetic recording medium having a granular structure, excellent recording/reproducing properties, and excellent durability. According to one embodiment, a recording layer includes a layer which has crystal grains mainly composed of cobalt and crystal grain boundaries mainly composed of the oxide; the oxygen content of the recoding layer is changed in the film thickness direction; the oxygen content in the area in the vicinity of the interface between the recording layer and the intermediate layer is made lower than the oxygen content in the area in the vicinity of the center of the recording layer; and the oxygen content in the area in the vicinity of the interface between the recording layer and the protective layer is made lower than the oxygen content in the area in the vicinity of the center of the recording layer.
摘要翻译：根据本发明的实施例有助于获得具有颗粒结构的良好的记录/再现性能和优异的耐久性的垂直磁记录介质。根据一个实施例，记录层包括主要由钴构成的晶粒和主要由氧化物构成的晶界的层; 记录层的氧含量在膜厚方向上变化; 记录层和中间层之间的界面附近的区域中的氧含量低于记录层中心附近的区域中的氧含量; 并且将记录层和保护层之间的界面附近的区域中的氧含量设定得低于记录层中心附近的区域中的氧含量。

9. 发明授权

US08507115B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US08507115B2
公开(公告)日：2013-08-13
申请号：US12559365
申请日：2009-09-14
申请人： Reiko Arai , Niroyuki Nakagawa
发明人： Reiko Arai , Niroyuki Nakagawa
IPC分类号： G11B5/667
CPC分类号： G11B5/732 , G11B5/7325 , G11B5/82
摘要： According to one embodiment, a perpendicular magnetic recording medium includes a soft magnetic underlayer having an amorphous structure or a microcrystalline structure, a first seed layer comprised of a magnetic material having an fcc crystal structure including a CoFe alloy formed on a substrate side, and a second seed layer formed on the first seed layer, the second seed layer comprised of a nonmagnetic material having an fcc crystal structure including a NiW alloy. The medium also includes an intermediate layer comprised of Ru or an alloy thereof, a magnetic recording layer, and a protective layer, wherein the layers are sequentially stacked on a substrate in the foregoing order and the protective layer is closer to the substrate than the soft magnetic underlayer. Other embodiments of magnetic recording media, and methods of fabrication, are also described.
摘要翻译：根据一个实施例，垂直磁记录介质包括具有非晶结构或微晶结构的软磁性底层，第一晶种层由具有在基板侧形成的CoFe合金的fcc晶体结构的磁性材料构成，以及形成在第一籽晶层上的第二晶种层，第二晶种层由具有包含NiW合金的fcc晶体结构的非磁性材料构成。该介质还包括由Ru或它们的合金构成的中间层，磁记录层和保护层，其中按照上述顺序将层依次堆叠在基板上，并且保护层比软件更靠近基板磁性底层。还描述了磁记录介质的其它实施例和制造方法。

10. 发明申请

US20050254182A1 Magnetoresistive sensor including magnetic domain control layers having high electric resistivity, magnetic head and magnetic disk apparatus 失效
标题翻译：磁阻传感器包括具有高电阻率的磁畴控制层，磁头和磁盘装置
公开(公告)号：US20050254182A1
公开(公告)日：2005-11-17
申请号：US11188695
申请日：2005-07-26
申请人： Hiromasa Takahashi , Reiko Arai , Susumu Soeya
发明人： Hiromasa Takahashi , Reiko Arai , Susumu Soeya
IPC分类号： G01R33/09 , G11B5/127 , G11B5/33 , G11B5/39 , H01L43/08
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/09 , G11B5/3903 , G11B5/3909 , G11B5/3932 , G11B5/3967 , G11B2005/3996
摘要： A magnetoresistive sensor of the type of flowing a signal sensing current perpendicular to the plane, a magnetic head using the magnetoresistive sensor, and a magnetic disk apparatus, comprising a substrate, a pair of magnetic shield layers consisting of a lower magnetic shield layer and an upper magnetic shield layer, a magnetoresistive sensor layer, disposed between the pair of magnetic shield layers, an electrode terminal for flowing a signal current perpendicular to the plane of the magnetoresistive sensor layer, and magnetic domain control layers for controlling Barkhausen noise of the magnetoresistive sensor layer, the magnetic domain control layers being disposed in contact with opposite ends of the magnetoresistive sensor layer consist of a material having high electric resistivity and with a specific resistance not less than 10 mΩcm.
摘要翻译：使垂直于该平面的信号感应电流的类型的磁阻传感器，使用磁阻传感器的磁头和包括基板的磁盘装置，由下磁屏蔽层和上磁屏蔽层，磁阻传感器层，设置在一对磁屏蔽层之间，用于使垂直于磁阻传感器层的平面的信号电流流过的电极端子和用于控制磁阻传感器的巴克豪森噪声的磁畴控制层层，与磁阻传感器层的相对端接触的磁畴控制层由具有高电阻率且电阻率不小于10mOggacm的材料组成。

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