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1.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：US08071228B2
公开(公告)日：2011-12-06
申请号：US11983577
申请日：2007-11-09
申请人： Reiko Arai , Hiroyuki Suzuki , Masayoshi Shimizu
发明人： Reiko Arai , Hiroyuki Suzuki , Masayoshi Shimizu
IPC分类号： G11B5/66
CPC分类号： G11B5/667
摘要： Embodiments of the present invention provide a perpendicular magnetic recording medium which does not cause medium noise to increase due to soft magnetic underlayers, is capable of easily controlling the thickness of a nonmagnetic layer disposed between soft magnetic underlayers, and capable of improving the corrosion resistance of the soft magnetic underlayers. According to one embodiment, in a perpendicular magnetic recording medium, an adhesion layer is formed on a substrate, a soft magnetic underlayer is formed on the adhesion layer, a seed layer and an intermediate layer are formed above the soft magnetic underlayer, and a perpendicular layer is formed on the intermediate layer. The soft magnetic underlayer has a first soft magnetic layer, a second first soft magnetic layer, and an antiferromagnetic coupling layer disposed between the first soft magnetic layer and the second soft magnetic layer, the first soft magnetic layer and the second soft magnetic layer are formed of an alloy comprising Fe as a main ingredient, the antiferromagnetic coupling layer is formed of an Ru—Fe alloy, and an Fe content is from 40 at % to 75 at %.
摘要翻译： 本发明的实施例提供一种垂直磁记录介质，其不会由于软磁性底层而引起中等噪声的增加，能够容易地控制设置在软磁性底层之间的非磁性层的厚度，并能够提高耐软化性 软磁垫层。 根据一个实施例，在垂直磁记录介质中，在基板上形成粘合层，在粘合层上形成软磁性底层，在软磁性底层上方形成种子层和中间层， 层形成在中间层上。 软磁性底层具有第一软磁性层，第二第一软磁性层和设置在第一软磁性层与第二软磁性层之间的反铁磁性结合层，形成第一软磁性层和第二软磁性层 以Fe为主要成分的合金，反铁磁性结合层由Ru-Fe合金形成，Fe含量为40原子％〜75原子％。
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公开(公告)号：US20080124583A1
公开(公告)日：2008-05-29
申请号：US11983577
申请日：2007-11-09
申请人： Reiko Arai , Hiroyuki Suzuki , Masayoshi Shimizu
发明人： Reiko Arai , Hiroyuki Suzuki , Masayoshi Shimizu
IPC分类号： G11B5/62
CPC分类号： G11B5/667
摘要： Embodiments of the present invention provide a perpendicular magnetic recording medium which does not cause medium noise to increase due to soft magnetic underlayers, is capable of easily controlling the thickness of a nonmagnetic layer disposed between soft magnetic underlayers, and capable of improving the corrosion resistance of the soft magnetic underlayers. According to one embodiment, in a perpendicular magnetic recording medium, an adhesion layer is formed on a substrate, a soft magnetic underlayer is formed on the adhesion layer, a seed layer and an intermediate layer are formed above the soft magnetic underlayer, and a perpendicular layer is formed on the intermediate layer. The soft magnetic underlayer has a first soft magnetic layer, a second first soft magnetic layer, and an antiferromagnetic coupling layer disposed between the first soft magnetic layer and the second soft magnetic layer, the first soft magnetic layer and the second soft magnetic layer are formed of an alloy comprising Fe as a main ingredient, the antiferromagnetic coupling layer is formed of an Ru—Fe alloy, and an Fe content is from 40 at % to 75 at %.
摘要翻译： 本发明的实施例提供一种垂直磁记录介质，其不会由于软磁性底层而引起中等噪声的增加，能够容易地控制设置在软磁性底层之间的非磁性层的厚度，并能够提高耐软化性 软磁垫层。 根据一个实施例，在垂直磁记录介质中，在基板上形成粘合层，在粘合层上形成软磁性底层，在软磁性底层上方形成种子层和中间层， 层形成在中间层上。 软磁性底层具有第一软磁性层，第二第一软磁性层和设置在第一软磁性层与第二软磁性层之间的反铁磁性结合层，形成第一软磁性层和第二软磁性层 以Fe为主要成分的合金，反铁磁性结合层由Ru-Fe合金形成，Fe含量为40原子％〜75原子％。
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公开(公告)号：US07691500B2
公开(公告)日：2010-04-06
申请号：US11998731
申请日：2007-11-30
申请人： Masayoshi Shimizu , Reiko Arai
发明人： Masayoshi Shimizu , Reiko Arai
IPC分类号： G11B5/66
CPC分类号： G11B5/667
摘要： Embodiments of the present invention help to provide an excellent perpendicular recording medium of high medium signal-to-noise (S/N) and with suppressed blurring in writing. According to one embodiment, a perpendicular recording layer is provided by way of a negative magnetic strain soft-magnetic underlayer above a substrate applied with texturing in the circumferential direction. The soft-magnetic underlayer has a first soft magnetic layer, a second soft magnetic layer and a nonmagnetic magnetic layer formed between the first soft magnetic layer and the second soft magnetic layer in which the first soft magnetic layer and the second soft magnetic layer are antiferromagnetically coupled to each other and the easy magnetization axis is directed in the radial direction.
摘要翻译： 本发明的实施例有助于提供高介质信噪比（S / N）和书写抑制模糊的优良垂直记录介质。 根据一个实施例，垂直记录层通过在圆周方向施加纹理的基底上方的负磁应变软磁性底层提供。 所述软磁性底层具有形成在所述第一软磁性层与所述第二软磁性层之间的第一软磁性层，第二软磁性层和非磁性磁性层，其中所述第一软磁性层和所述第二软磁性层为反铁磁性 彼此耦合并且容易的磁化轴指向径向。
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公开(公告)号：US20080130170A1
公开(公告)日：2008-06-05
申请号：US11998731
申请日：2007-11-30
申请人： Masayoshi Shimizu , Reiko Arai
发明人： Masayoshi Shimizu , Reiko Arai
IPC分类号： G11B5/127
CPC分类号： G11B5/667
摘要： Embodiments of the present invention help to provide an excellent perpendicular recording medium of high medium signal-to-noise (S/N) and with suppressed blurring in writing. According to one embodiment, a perpendicular recording layer is provided by way of a negative magnetic strain soft-magnetic underlayer above a substrate applied with texturing in the circumferential direction. The soft-magnetic underlayer has a first soft magnetic layer, a second soft magnetic layer and a nonmagnetic magnetic layer formed between the first soft magnetic layer and the second soft magnetic layer in which the first soft magnetic layer and the second soft magnetic layer are antiferromagnetically coupled to each other and the easy magnetization axis is directed in the radial direction.
摘要翻译： 本发明的实施例有助于提供高介质信噪比（S / N）和书写抑制模糊的优良垂直记录介质。 根据一个实施例，垂直记录层通过在圆周方向施加纹理的基底上方的负磁应变软磁性底层提供。 所述软磁性底层具有形成在所述第一软磁性层与所述第二软磁性层之间的第一软磁性层，第二软磁性层和非磁性磁性层，其中所述第一软磁性层和所述第二软磁性层为反铁磁性 彼此耦合并且容易的磁化轴指向径向。
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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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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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9.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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10.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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