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1.发明申请公开(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
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。
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2.发明申请公开(公告)号：US20060019124A1
公开(公告)日：2006-01-26
申请号：US11186931
申请日：2005-07-22
申请人： Tomio Iwasaki , Yuzuru Hosoe
发明人： Tomio Iwasaki , Yuzuru Hosoe
IPC分类号： G11B5/66
CPC分类号： G11B5/7325
摘要： A perpendicular magnetic recording medium, comprises: a substrate; a soft-magnetic underground layer formed on one main surface of the substrate; a non-magnetic layer formed on the soft-magnetic underground layer; an intermediate layer formed on the non-magnetic layer; and a perpendicular recording layer formed on the intermediate layer, wherein an addition element is contained within the intermediate layer, for improving flatness of the surface thereof, thereby having high reliability and high functions, as well as, a magnetic recording apparatus having high reliability and high performances.
摘要翻译： 一种垂直磁记录介质，包括：基板; 形成在基板的一个主表面上的软磁地下层; 形成在软磁地下层上的非磁性层; 形成在非磁性层上的中间层; 以及形成在中间层上的垂直记录层，其中在中间层中包含添加元素，用于提高其表面的平坦度，从而具有高可靠性和高功能，以及具有高可靠性和 高性能。
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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
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.
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4.发明授权公开(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。
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5.发明授权公开(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
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。
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6.发明授权Perpendicular magnetic recording media and magnetic storage apparatus using the same 有权垂直磁记录介质及使用其的磁存储装置公开(公告)号：US07368185B2
公开(公告)日：2008-05-06
申请号：US10977552
申请日：2004-10-29
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/656
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium that not only attains the magnetic isolation of crystal grains in a magnetic recording layer from one another in a region of the medium in which the thickness of an intermediate layer is equal to or smaller than about 20 nm but also exhibits excellent crystallographic texture and that exhibits small medium noise, excellent thermal stability, and high write-ability. In one embodiment, a perpendicular magnetic recording medium has at least a soft-magnetic underlayer, a first intermediate layer, a second intermediate layer, a third intermediate layer, and a magnetic recording layer successively formed on a substrate. The magnetic recording layer is composed of ferromagnetic crystal grains and oxides or nitrides, the third intermediate layer is composed of Ru or an Ru alloy, the second intermediate layer is composed of a metal or an alloy having the face-centered cubic lattice structure, and the first intermediate layer is composed of a metal or an alloy having the hexagonal close-packed structure.
摘要翻译： 本发明的实施例提供了一种垂直磁记录介质，其不仅在中间层的厚度等于或小于约20的介质的区域中彼此之间实现磁记录层中的晶粒的磁隔离 nm，但也具有优异的晶体学结构，表现出中等的中等噪声，优异的热稳定性和高的写入能力。 在一个实施例中，垂直磁记录介质至少具有在基板上依次形成的软磁性底层，第一中间层，第二中间层，第三中间层和磁记录层。 磁记录层由铁磁性晶粒和氧化物或氮化物构成，第三中间层由Ru或Ru合金构成，第二中间层由具有面心立方晶格结构的金属或合金构成， 第一中间层由具有六方密堆积结构的金属或合金构成。
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公开(公告)号：US07153546B2
公开(公告)日：2006-12-26
申请号：US10790803
申请日：2004-03-03
IPC分类号： H05B6/00
CPC分类号： G11B5/667 , G11B5/66 , G11B5/7325 , Y10S428/90
摘要： Provided are a double-layer perpendicular magnetic recording medium having a high medium S/N at an areal recording density of 50 Gbits or more per square inch, and a magnetic storage apparatus having excellent reliability with a low error rate. The perpendicular magnetic recording medium is formed by sequentially laminating a domain control layer, an amorphous soft magnetic underlayer, an intermediate layer, and a perpendicular recording layer on a substrate. The domain control layer is a triple-layer film formed by laminating a first polycrystalline soft magnetic layer, a disordered antiferromagnetic layer, and a second polycrystalline soft magnetic layer from a substrate side.
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公开(公告)号：US06924048B2
公开(公告)日：2005-08-02
申请号：US10413481
申请日：2003-04-15
申请人： Tetsuya Kanbe , Yuzuru Hosoe , Ichiro Tamai , Yoshio Takahashi , Kiwamu Tanahashi , Satoshi Matsunuma , Yoshihiro Shiroishi
发明人： Tetsuya Kanbe , Yuzuru Hosoe , Ichiro Tamai , Yoshio Takahashi , Kiwamu Tanahashi , Satoshi Matsunuma , Yoshihiro Shiroishi
CPC分类号： G11B5/70 , G11B5/714 , Y10S428/90
摘要： A magnetic storage device has a magnetic layer, the magnetic crystal grains of which are separated by a nonmagnetic phase. The typical crystal grain is in the approximate shape of a sphere or an ellipsoid. The thickness of the magnetic crystal grains, which is in the direction perpendicular to the surface or the film, is smaller than that of the thickness of the magnetic film. The ratio of the coercive force, which is measured in the circumferential direction, to the coercive force, which is measured in the radial direction, (the orientation ratio of the coercive force), is larger than 1.0, but preferably nor greater than 3.0. Further, the area fraction of the magnetic grains having an extended axis within 30° from the circumferential direction is equal to or more than 45%.
摘要翻译： 磁存储装置具有磁性层，其磁性晶粒由非磁性相分离。 典型的晶粒呈球体或椭圆体的近似形状。 磁性晶粒的与表面或膜垂直的方向的厚度小于磁性膜的厚度。 在圆周方向上测量的矫顽力与径向测定的矫顽力（矫顽力的取向比）的比例大于1.0，优选为3.0以下。 此外，具有从圆周方向的30°以内的延伸轴的磁性颗粒的面积分数等于或大于45％。
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9.发明申请Perpendicular magnetic recording media and magnetic storage apparatus using the same 有权垂直磁记录介质及使用其的磁存储装置公开(公告)号：US20050142388A1
公开(公告)日：2005-06-30
申请号：US10977552
申请日：2004-10-29
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/656
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium that not only attains the magnetic isolation of crystal grains in a magnetic recording layer from one another in a region of the medium in which the thickness of an intermediate layer is equal to or smaller than about 20 nm but also exhibits excellent crystallographic texture and that exhibits small medium noise, excellent thermal stability, and high write-ability. In one embodiment, a perpendicular magnetic recording medium has at least a soft-magnetic underlayer, a first intermediate layer, a second intermediate layer, a third intermediate layer, and a magnetic recording layer successively formed on a substrate. The magnetic recording layer is composed of ferromagnetic crystal grains and oxides or nitrides, the third intermediate layer is composed of Ru or an Ru alloy, the second intermediate layer is composed of a metal or an alloy having the face-centered cubic lattice structure, and the first intermediate layer is composed of a metal or an alloy having the hexagonal close-packed structure.
摘要翻译： 本发明的实施例提供了一种垂直磁记录介质，其不仅在中间层的厚度等于或小于约20的介质的区域中彼此之间实现磁记录层中的晶粒的磁隔离 nm，但也具有优异的晶体学结构，表现出中等的中等噪声，优异的热稳定性和高的写入能力。 在一个实施例中，垂直磁记录介质至少具有在基板上依次形成的软磁性底层，第一中间层，第二中间层，第三中间层和磁记录层。 磁记录层由铁磁性晶粒和氧化物或氮化物构成，第三中间层由Ru或Ru合金构成，第二中间层由具有面心立方晶格结构的金属或合金构成， 第一中间层由具有六方密堆积结构的金属或合金构成。
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10.发明授权Perpendicular magnetic recording media and magnetic storage apparatus using the same 失效垂直磁记录介质及使用其的磁存储装置公开(公告)号：US06773826B2
公开(公告)日：2004-08-10
申请号：US10076420
申请日：2002-02-19
申请人： Hiroyuki Nakagawa , Hiroaki Nemoto , Yuzuru Hosoe
发明人： Hiroyuki Nakagawa , Hiroaki Nemoto , Yuzuru Hosoe
IPC分类号： G11B564
CPC分类号： G11B5/667 , G11B5/7325 , Y10T428/12806 , Y10T428/12854 , Y10T428/12861 , Y10T428/12931 , Y10T428/265
摘要： A perpendicular magnetic recording medium and a magnetic storage apparatus, which show an excellent S/N ratio and are suitable for ultra high density magnetic recording, are provided. In the perpendicular magnetic recording medium having a recording layer composed of at least two layers of a main recording layer formed above a substrate and a thermally-stabilizing layer formed on the main recording layer, the thermally-stabilizing layer being formed closer to a surface of the medium than the main recording layer, alloy containing Co and Cr as a main component, which shows a low noise property, is used as the main recording layer, amorphous alloy containing rare earth metals and 3d transition metals as a main component, which is excellent in thermal stability, is used as the thermally-stabilizing layer, and a cap layer formed of alloy containing Co and Cr as a main component is formed on a surface of the thermally-stabilizing layer.
摘要翻译： 提供了显示优异的S / N比并且适用于超高密度磁记录的垂直磁记录介质和磁存储装置。 在具有由形成在基板上形成的主记录层的至少两层和由主记录层形成的热稳定层构成的记录层的垂直磁记录介质中，形成为更靠近表面的热稳定层 使用显示低噪声特性的Co和Cr作为主要成分的合金作为主记录层，使用含有稀土金属和3d过渡金属作为主要成分的非晶态合金作为主记录层，其为 热稳定性优异，作为热稳定层的表面形成由Co和Cr作为主要成分的合金形成的盖层。
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