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1.发明申请公开(公告)号：US20060083951A1
公开(公告)日：2006-04-20
申请号：US11246452
申请日：2005-10-06
申请人： Reiko Arai , Yoshinori Honda , Hiroyuki Matsumoto
发明人： Reiko Arai , Yoshinori Honda , Hiroyuki Matsumoto
IPC分类号： G11B5/66
CPC分类号： G11B5/667 , G11B5/1278 , G11B5/656 , G11B5/7325
摘要： Embodiments of the invention relate to easily achieving a perpendicular magnetic recording medium with high reliability and a magnetic recording apparatus with high recording density by improving the magnetic properties and surface smoothness of the soft magnetic underlayer and, moreover, enhancing adhesion with the substrate. In one embodiment, a perpendicular magnetic recording media composing a substrate, an adhesion layer formed on the substrate in which a second underlayer is laminated on a first underlayer, a soft magnetic underlayer formed on the second underlayer, an intermediate layer formed on the soft magnetic underlayer, a perpendicular recording layer formed on the intermediate layer, wherein the aforementioned first underlayer consists of an alloy composed of at least two elements selected from the group of Ni, Al, Ti, Ta, Cr, and Co, and the aforementioned second underlayer consists of Ta or a Ta-based amorphous structured alloy containing at least one element selected from the group of Ni, Al, Ti, Cr, and Zr.
摘要翻译： 本发明的实施方式涉及通过提高软磁性底层的磁特性和表面平滑性，并且进一步提高与基板的粘合性，容易地实现高可靠性的垂直磁记录介质和具有高记录密度的磁记录装置。 在一个实施例中，构成基板的垂直磁记录介质，形成在第一底层上的第二底层的基板上形成的粘附层，形成在第二底层上的软磁性底层，形成在软磁体上的中间层 底层，形成在中间层上的垂直记录层，其中上述第一底层由选自Ni，Al，Ti，Ta，Cr和Co中的至少两种元素组成的合金和上述第二底层 由含有选自Ni，Al，Ti，Cr和Zr中的至少一种元素的Ta或Ta基非晶结构合金构成。
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2.发明授权公开(公告)号：US07666530B2
公开(公告)日：2010-02-23
申请号：US11246452
申请日：2005-10-06
申请人： Reiko Arai , Yoshinori Honda , Hiroyuki Matsumoto
发明人： Reiko Arai , Yoshinori Honda , Hiroyuki Matsumoto
IPC分类号： G11B5/66
CPC分类号： G11B5/667 , G11B5/1278 , G11B5/656 , G11B5/7325
摘要： Embodiments of the invention relate to easily achieving a perpendicular magnetic recording medium with high reliability and a magnetic recording apparatus with high recording density by improving the magnetic properties and surface smoothness of the soft magnetic underlayer and, moreover, enhancing adhesion with the substrate. In one embodiment, a perpendicular magnetic recording media composing a substrate, an adhesion layer formed on the substrate in which a second underlayer is laminated on a first underlayer, a soft magnetic underlayer formed on the second underlayer, an intermediate layer formed on the soft magnetic underlayer, a perpendicular recording layer formed on the intermediate layer, wherein the aforementioned first underlayer consists of an alloy composed of at least two elements selected from the group of Ni, Al, Ti, Ta, Cr, and Co, and the aforementioned second underlayer consists of Ta or a Ta-based amorphous structured alloy containing at least one element selected from the group of Ni, Al, Ti, Cr, and Zr.
摘要翻译： 本发明的实施方式涉及通过提高软磁性底层的磁特性和表面平滑性，并且进一步提高与基板的粘合性，容易地实现高可靠性的垂直磁记录介质和具有高记录密度的磁记录装置。 在一个实施例中，构成基板的垂直磁记录介质，形成在第一底层上的第二底层的基板上形成的粘附层，形成在第二底层上的软磁性底层，形成在软磁体上的中间层 底层，形成在中间层上的垂直记录层，其中上述第一底层由选自Ni，Al，Ti，Ta，Cr和Co中的至少两种元素组成的合金和上述第二底层 由含有选自Ni，Al，Ti，Cr和Zr中的至少一种元素的Ta或Ta基非晶结构合金构成。
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3.发明授权公开(公告)号：US07875371B2
公开(公告)日：2011-01-25
申请号：US11107588
申请日：2005-04-15
申请人： Reiko Arai , Kiwamu Tanahashi , Yoshinori Honda , Mineaki Kodama
发明人： Reiko Arai , Kiwamu Tanahashi , Yoshinori Honda , Mineaki Kodama
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium improved for fly ability, high in read signal quality, and capable of suppressing magnetic decay of recorded magnetization to be caused by stray fields. In one embodiment, a perpendicular recording layer is formed over a substrate with a soft magnetic underlayer therebetween, then an amorphous or nano-crystalline layer is formed between the substrate and the soft magnetic underlayer. The soft magnetic underlayer includes first and second amorphous soft magnetic layers, as well as a nonmagnetic layer formed between those first and second amorphous soft magnetic layers. The first and second amorphous soft magnetic layers are given uniaxial anisotropy in the radial direction of the substrate respectively and coupled with each other antiferromagnetically.
摘要翻译： 本发明的实施例提供了一种改进的飞行能力，高读取信号质量并能够抑制由杂散场引起的记录磁化的磁衰减的垂直磁记录介质。 在一个实施例中，垂直记录层在其上具有软磁性底层的衬底上形成，然后在衬底和软磁性底层之间形成无定形或纳米晶层。 软磁性底层包括第一和第二非晶软磁性层，以及在这些第一和第二非晶软磁性层之间形成的非磁性层。 第一和第二非晶软磁性层分别在基板的径向方向上具有单轴各向异性，并且彼此反铁磁耦合。
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4.发明申请公开(公告)号：US20110151144A1
公开(公告)日：2011-06-23
申请号：US12969351
申请日：2010-12-15
申请人： Reiko Arai , Kiwamu Tanahashi , Yoshinori Honda , Mineaki Kodama
发明人： Reiko Arai , Kiwamu Tanahashi , Yoshinori Honda , Mineaki Kodama
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium improved for fly ability, high in read signal quality, and capable of suppressing magnetic decay of recorded magnetization to be caused by stray fields. In one embodiment, a perpendicular recording layer is formed over a substrate with a soft magnetic underlayer therebetween, then an amorphous or nano-crystalline layer is formed between the substrate and the soft magnetic underlayer. The soft magnetic underlayer includes first and second amorphous soft magnetic layers, as well as a nonmagnetic layer formed between those first and second amorphous soft magnetic layers. The first and second amorphous soft magnetic layers are given uniaxial anisotropy in the radial direction of the substrate respectively and coupled with each other antiferromagnetically.
摘要翻译： 本发明的实施例提供了一种改进的飞行能力，高读取信号质量并且能够抑制由杂散场引起的记录磁化的磁衰减的垂直磁记录介质。 在一个实施例中，垂直记录层在其上具有软磁性底层的衬底上形成，然后在衬底和软磁性底层之间形成无定形或纳米晶层。 软磁性底层包括第一和第二非晶软磁性层，以及在这些第一和第二非晶软磁性层之间形成的非磁性层。 第一和第二非晶软磁性层分别在基板的径向方向上具有单轴各向异性，并且彼此反铁磁耦合。
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5.发明申请公开(公告)号：US20050244679A1
公开(公告)日：2005-11-03
申请号：US11107588
申请日：2005-04-15
申请人： Reiko Arai , Kiwamu Tanahashi , Yoshinori Honda , Mineaki Kodama
发明人： Reiko Arai , Kiwamu Tanahashi , Yoshinori Honda , Mineaki Kodama
IPC分类号： G11B5/667 , G11B5/127 , G11B5/66 , G11B5/73 , G11B5/738 , G11B5/84 , G11B5/851 , G11B5/852 , H01F10/13 , H01F10/16 , H01F10/32 , H01F41/18
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium improved for fly ability, high in read signal quality, and capable of suppressing magnetic decay of recorded magnetization to be caused by stray fields. In one embodiment, a perpendicular recording layer is formed over a substrate with a soft magnetic underlayer therebetween, then an amorphous or nano-crystalline layer is formed between the substrate and the soft magnetic underlayer. The soft magnetic underlayer includes first and second amorphous soft magnetic layers, as well as a nomnagnetic layer formed between those first and second amorphous soft magnetic layers. The first and second amorphous soft magnetic layers are given uniaxial anisotropy in the radial direction of the substrate respectively and coupled with each other antiferromagnetically.
摘要翻译： 本发明的实施例提供了一种改进的飞行能力，高读取信号质量并且能够抑制由杂散场引起的记录磁化的磁衰减的垂直磁记录介质。 在一个实施例中，垂直记录层在其上具有软磁性底层的衬底上形成，然后在衬底和软磁性底层之间形成无定形或纳米晶层。 软磁性底层包括第一和第二非晶软磁性层，以及在第一和第二非晶软磁性层之间形成的正磁性层。 第一和第二非晶软磁性层分别在基板的径向方向上具有单轴各向异性，并且彼此反铁磁耦合。
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公开(公告)号：US20110032638A1
公开(公告)日：2011-02-10
申请号：US12907943
申请日：2010-10-19
申请人： Reiko Arai , Kiwamu Tanahashi , Yoshinori Honda , Mineaki Kodama
发明人： Reiko Arai , Kiwamu Tanahashi , Yoshinori Honda , Mineaki Kodama
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium improved for fly ability, high in read signal quality, and capable of suppressing magnetic decay of recorded magnetization to be caused by stray fields. In one embodiment, a perpendicular recording layer is formed over a substrate with a soft magnetic underlayer therebetween, then an amorphous or nano-crystalline layer is formed between the substrate and the soft magnetic underlayer. The soft magnetic underlayer includes first and second amorphous soft magnetic layers, as well as a nonmagnetic layer formed between those first and second amorphous soft magnetic layers. The first and second amorphous soft magnetic layers are given uniaxial anisotropy in the radial direction of the substrate respectively and coupled with each other antiferromagnetically.
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公开(公告)号：US08802247B2
公开(公告)日：2014-08-12
申请号：US11582878
申请日：2006-10-17
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
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公开(公告)号：US20070087226A1
公开(公告)日：2007-04-19
申请号：US11582878
申请日：2006-10-17
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
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9.发明申请公开(公告)号：US20070285839A1
公开(公告)日：2007-12-13
申请号：US11804197
申请日：2007-05-16
IPC分类号： G11B5/74
CPC分类号： G11B5/667 , C23C14/3414 , G11B5/7325 , G11B5/851
摘要： Embodiments of the present invention improve the production efficiency of a perpendicular recording medium while ensuring the scratch resistance thereof. In order to realize high production stability in the high speed production of perpendicular recording media, a target is not provided with a texture of a low melting point or the ratio thereof is decreased. Thus according to one embodiment of the present invention, upon forming a layer having an element of a low melting point in the constituent layers of a perpendicular recording medium, a target can be made using an alloy powder previously formed of an intermetallic compound having a melting point higher than 660° C., thereby preventing thermal deformation.
摘要翻译： 本发明的实施例提高垂直记录介质的生产效率，同时确保其耐刮擦性。 为了在垂直记录介质的高速生产中实现高生产稳定性，目标物不具有低熔点组织或其比例降低。 因此，根据本发明的一个实施方案，在垂直记录介质的构成层中形成具有低熔点元素的层时，可以使用预先由熔融的金属间化合物形成的合金粉末来制备靶 高于660℃，从而防止热变形。
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公开(公告)号：US20070153419A1
公开(公告)日：2007-07-05
申请号：US11645252
申请日：2006-12-21
CPC分类号： G11B5/4555 , G11B5/7379
摘要： Embodiments in accordance with the invention realize a perpendicular magnetic record medium with a high media S/N and excellent corrosion resistance. In a perpendicular magnetic record medium in accordance with an embodiment of the present invention prepared by forming an adhesion layer, an underlayer, a seed layer, an intermediate layer, and a recording layer sequentially on a substrate, the seed layer is specified to have a laminated structure consisting of a first seed layer and a second seed layer. The first seed layer consists of an amorphous alloy containing Cr and the second seed layer consists of an amorphous alloy predominantly composed of Ni with an fcc structure.
摘要翻译： 根据本发明的实施例实现了具有高介质S / N和优异耐腐蚀性的垂直磁记录介质。 在根据本发明的实施例的垂直磁记录介质中，通过在基板上依次形成粘合层，底层，种子层，中间层和记录层而制备，种子层被规定为具有 层叠结构由第一种子层和第二种子层构成。 第一晶种层由含有Cr的非晶合金构成，第二晶种层由主要由具有fcc结构的Ni构成的非晶合金构成。
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