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公开(公告)号：US20100165500A1
公开(公告)日：2010-07-01
申请号：US12630707
申请日：2009-12-03
CPC分类号： G11B5/667 , G11B5/66 , G11B5/7325
摘要： In order to provide a thermal energy assisted medium capable of improving anti-sliding reliability over long periods of time in low flying head conditions, while also maintaining a high SNR, a unique medium is proposed. A soft magnetic layer is formed on a substrate, a soft magnetic layer is formed thereon via a non-magnetic intermediate layer, and an intermediate layer, a crystal oriented control intermediate layer, an artificial lattice intermediate layer having an artificial lattice film in which a first layer comprising Co and a second layer comprising Pt and Pd are laminated repeatedly to form a recording layer, and a cap layer and an lubricating layer are formed. The concentration of Pd comprising the second layer is from about 20 atomic % to about 40 atomic %. Other mediums and systems are also described.
摘要翻译： 为了提供能够在低飞行头条件下长时间提高抗滑动可靠性的热能辅助介质，同时还保持高SNR，提出了独特的介质。 在基板上形成软磁性层，经由非磁性中间层形成软磁性层，中间层，取向晶体管的中间层，具有人造晶格膜的人造晶格中间层，其中， 重复层叠包括Co和包含Pt和Pd的第二层的第一层以形成记录层，并且形成覆盖层和润滑层。 包含第二层的Pd的浓度为约20原子％至约40原子％。 还描述了其它介质和系统。
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公开(公告)号：US09099140B2
公开(公告)日：2015-08-04
申请号：US12630707
申请日：2009-12-03
CPC分类号： G11B5/667 , G11B5/66 , G11B5/7325
摘要： In order to provide a thermal energy assisted medium capable of improving anti-sliding reliability over long periods of time in low flying head conditions, while also maintaining a high SNR, a unique medium is proposed. A soft magnetic layer is formed on a substrate, a soft magnetic layer is formed thereon via a non-magnetic intermediate layer, and an intermediate layer, a crystal oriented control intermediate layer, an artificial lattice intermediate layer having an artificial lattice film in which a first layer comprising Co and a second layer comprising Pt and Pd are laminated repeatedly to form a recording layer, and a cap layer and an lubricating layer are formed. The concentration of Pd comprising the second layer is from about 20 atomic % to about 40 atomic %. Other mediums and systems are also described.
摘要翻译： 为了提供能够在低飞行头条件下长时间提高抗滑动可靠性的热能辅助介质，同时还保持高SNR，提出了独特的介质。 在基板上形成软磁性层，通过非磁性中间层，中间层，取向晶体管的中间层，具有人造晶格膜的人造晶格中间层，在其上形成软磁性层，其中， 重复层叠包括Co和包含Pt和Pd的第二层的第一层以形成记录层，并且形成覆盖层和润滑层。 包含第二层的Pd的浓度为约20原子％至约40原子％。 还描述了其它介质和系统。
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公开(公告)号：US07625646B2
公开(公告)日：2009-12-01
申请号：US11354085
申请日：2006-02-15
申请人： Yoshiyuki Hirayama , Ichiro Tamai , Takayuki Ichihara , Hiroyuki Nakagawa , Hiroaki Nemoto , Mineaki Kodama , Ikuko Takekuma
发明人： Yoshiyuki Hirayama , Ichiro Tamai , Takayuki Ichihara , Hiroyuki Nakagawa , Hiroaki Nemoto , Mineaki Kodama , Ikuko Takekuma
IPC分类号： G11B5/66
摘要： Disclosed are a perpendicular magnetic recording medium with lower medium noise, insusceptible to thermal fluctuation and high recording resolution and a method of manufacturing it. As the step of forming a metal layer at the time of forming a recording layer on a non-magnetic substrate via a plurality of underlayers and the step of forming an oxide layer with an average thickness of 0.2 nm or less are repeated, the crystal grains are magnetically isolated without disturbing the orientation of the crystal grain of the recording layer of the perpendicular magnetic recording medium or without degrading the magnetic characteristic of the crystal grain of the recording layer.
摘要翻译： 公开了一种具有较低介质噪声，不易受热波动和高记录分辨率的垂直磁记录介质及其制造方法。 作为通过多个底层在非磁性基板上形成记录层时形成金属层的步骤，重复平均厚度为0.2nm以下的氧化物层的工序，晶粒 磁性隔离，而不会干扰垂直磁记录介质的记录层的晶粒的取向，或不降低记录层的晶粒的磁特性。
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公开(公告)号：US07033686B2
公开(公告)日：2006-04-25
申请号：US10701603
申请日：2003-11-06
申请人： Yoshiyuki Hirayama , Ichiro Tamai , Takayuki Ichihara , Hiroyuki Nakagawa , Hiroaki Nemoto , Mineaki Kodama , Ikuko Takekuma
发明人： Yoshiyuki Hirayama , Ichiro Tamai , Takayuki Ichihara , Hiroyuki Nakagawa , Hiroaki Nemoto , Mineaki Kodama , Ikuko Takekuma
摘要： Disclosed are a perpendicular magnetic recording medium with lower medium noise, insusceptible to thermal fluctuation and high recording resolution and a method of manufacturing it. As the step of forming a metal layer at the time of forming a recording layer on a non-magnetic substrate via a plurality of underlayers and the step of forming an oxide layer with an average thickness of 0.2 nm or less are repeated, the crystal grains are magnetically isolated without disturbing the orientation of the crystal grain of the recording layer of the perpendicular magnetic recording medium or without degrading the magnetic characteristic of the crystal grain of the recording layer.
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公开(公告)号：US20060134467A1
公开(公告)日：2006-06-22
申请号：US11354085
申请日：2006-02-15
申请人： Yoshiyuki Hirayama , Ichiro Tamai , Takayuki Ichihara , Hiroyuki Nakagawa , Hiroaki Nemoto , Mineaki Kodama , Ikuko Takekuma
发明人： Yoshiyuki Hirayama , Ichiro Tamai , Takayuki Ichihara , Hiroyuki Nakagawa , Hiroaki Nemoto , Mineaki Kodama , Ikuko Takekuma
摘要： Disclosed are a perpendicular magnetic recording medium with lower medium noise, insusceptible to thermal fluctuation and high recording resolution and a method of manufacturing it. As the step of forming a metal layer at the time of forming a recording layer on a non-magnetic substrate via a plurality of underlayers and the step of forming an oxide layer with an average thickness of 0.2 nm or less are repeated, the crystal grains are magnetically isolated without disturbing the orientation of the crystal grain of the recording layer of the perpendicular magnetic recording medium or without degrading the magnetic characteristic of the crystal grain of the recording layer.
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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：US07892663B2
公开(公告)日：2011-02-22
申请号：US12156317
申请日：2008-05-30
申请人： Hiroyuki Nakagawa , Ryoko Araki , Naoto Ito , Takayuki Ichihara
发明人： Hiroyuki Nakagawa , Ryoko Araki , Naoto Ito , Takayuki Ichihara
IPC分类号： G11B5/65
摘要： Embodiments of the present invention provide a perpendicular magnetic recording media having excellent resolution, signal to noise ratio (S/N), and a small adjacent track erasure. According to one embodiment, underlayers for controlling the orientation and segregation of a magnetic layer, a magnetic layer including an oxide and an alloy of magnetic materials mainly composed of Co, Cr, and Pt, and a ferromagnetic-metal layer which does not contain oxygen, are formed over a substrate. The magnetic layer has at least two layers including ferromagnetic grains and oxides, a first magnetic layer, which is the part of the magnetic layer closer to the substrate, has grain boundaries mainly composed of Cr oxide and at least one oxide selected from Si, Ti, Nb, and Ta, and grain boundaries of a second magnetic layer at the ferromagnetic-metal layer side includes at least one oxide selected from Si, Ti, Nb, and Ta in which Cr oxide is less than the first magnetic layer.
摘要翻译： 本发明的实施例提供了具有优异的分辨率，信噪比（S / N）和小的相邻轨道擦除的垂直磁记录介质。 根据一个实施例，用于控制磁性层的取向和偏析的底层，包括氧化物的磁性层和主要由Co，Cr和Pt组成的磁性材料的合金以及不含氧的铁磁性金属层 ，形成在衬底上。 磁性层具有至少两层包括铁磁性粒子和氧化物的层，作为靠近衬底的磁性层的一部分的第一磁性层具有主要由Cr氧化物和至少一种选自Si，Ti Nb和Ta中的至少一种，并且在铁磁金属层侧的第二磁性层的晶界包含选自Si，Ti，Nb和Ta中的至少一种氧化物小于第一磁性层的氧化物。
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公开(公告)号：US07641774B2
公开(公告)日：2010-01-05
申请号：US11259409
申请日：2005-10-25
IPC分类号： C23C14/34
CPC分类号： C23C14/3414 , G11B5/65 , G11B5/66 , G11B5/667 , G11B5/851
摘要： A perpendicular magnetic recording medium is manufactured having excellent thermal stability and recording performances across the entire disk surface. In one embodiment, the recording layer includes at least two layers deposited by using a reactive sputtering method under an oxygen-containing atmosphere at a deposition rate larger than the second recording layer which is formed on the first recording layer while depositing the first recording layer on the intermediate layer.
摘要翻译： 制造了具有优异的热稳定性和整个盘表面的记录性能的垂直磁记录介质。 在一个实施例中，记录层包括通过使用反应溅射法在含氧气氛下以大于形成在第一记录层上的第二记录层的沉积速率沉积的至少两层，同时将第一记录层沉积在 中间层。
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公开(公告)号：US07625644B2
公开(公告)日：2009-12-01
申请号：US11257978
申请日：2005-10-24
IPC分类号： G11B5/66
摘要： In a granular magnetic recording layer of a perpendicular magnetic recording medium, media noises are reduced by separating adequately magnetic crystal grains and non-magnetic grain boundary and decreasing magnetic exchange interactions among the magnetic crystal grains without causing damage to magnetic anisotropy of the magnetic crystal grains. In one embodiment, the perpendicular magnetic recording medium, in which crystal alloy grains containing Co, Pt, and Cr, and non-magnetic grain boundary containing Si and O is included; the ratio of the number of O atom to that of Si atom in the magnetic recording layer is between about 2.5 and 5; the Si atomic composition in the magnetic recording layer is between about 3 and 6 atomic %; and the O atomic composition in the magnetic recording layer is between about 12 and 20 atomic %, is used. The in-plane distribution of perpendicular coercivity at any points of the medium of the magnetic recording layer is made at most about ±10% of an average value.
摘要翻译： 在垂直磁记录介质的粒状磁记录层中，通过分离磁性晶粒和非磁性晶界以及降低磁晶粒之间的磁交换相互作用而不损害磁性晶粒的磁各向异性来降低介质噪声 。 在一个实施例中，包括含有Co，Pt和Cr的晶体合金晶粒和含有Si和O的非磁性晶界的垂直磁记录介质; 磁记录层中的O原子数与Si原子数的比例在约2.5和5之间; 磁记录层中的Si原子组成在约3和6原子％之间; 并且使用磁记录层中的O原子组成为约12至20原子％。 在磁记录层的介质的任何点处的垂直矫顽力的平面内分布最多为平均值的约±10％。
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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：US20090052074A1
公开(公告)日：2009-02-26
申请号：US12156317
申请日：2008-05-30
申请人： Hiroyuki Nakagawa , Ryoko Araki , Naoto Ito , Takayuki Ichihara
发明人： Hiroyuki Nakagawa , Ryoko Araki , Naoto Ito , Takayuki Ichihara
摘要： Embodiments of the present invention provide a perpendicular magnetic recording media having excellent resolution, signal to noise ratio (S/N), and a small adjacent track erasure. According to one embodiment, underlayers for controlling the orientation and segregation of a magnetic layer, a magnetic layer including an oxide and an alloy of magnetic materials mainly composed of Co, Cr, and Pt, and a ferromagnetic-metal layer which does not contain oxygen, are formed over a substrate. The magnetic layer has at least two layers including ferromagnetic grains and oxides, a first magnetic layer, which is the part of the magnetic layer closer to the substrate, has grain boundaries mainly composed of Cr oxide and at least one oxide selected from Si, Ti, Nb, and Ta, and grain boundaries of a second magnetic layer at the ferromagnetic-metal layer side includes at least one oxide selected from Si, Ti, Nb, and Ta in which Cr oxide is less than the first magnetic layer.
摘要翻译： 本发明的实施例提供了具有优异的分辨率，信噪比（S / N）和小的相邻轨道擦除的垂直磁记录介质。 根据一个实施例，用于控制磁性层的取向和偏析的底层，包括氧化物的磁性层和主要由Co，Cr和Pt组成的磁性材料的合金以及不含氧的铁磁性金属层 ，形成在衬底上。 磁性层具有至少两层包括铁磁性粒子和氧化物的层，作为靠近衬底的磁性层的一部分的第一磁性层具有主要由Cr氧化物和至少一种选自Si，Ti Nb和Ta中的至少一种，并且在铁磁金属层侧的第二磁性层的晶界包含选自Si，Ti，Nb和Ta中的至少一种氧化物小于第一磁性层的氧化物。
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公开(公告)号：US20060088736A1
公开(公告)日：2006-04-27
申请号：US11257978
申请日：2005-10-24
摘要： In a granular magnetic recording layer of a perpendicular magnetic recording medium, media noises are reduced by separating adequately magnetic crystal grains and non-magnetic grain boundary and decreasing magnetic exchange interactions among the magnetic crystal grains without causing damage to magnetic anisotropy of the magnetic crystal grains. In one embodiment, the perpendicular magnetic recording medium, in which crystal alloy grains containing Co, Pt, and Cr, and non-magnetic grain boundary containing Si and O is included; the ratio of the number of O atom to that of Si atom in the magnetic recording layer is between about 2.5 and 5; the Si atomic composition in the magnetic recording layer is between about 3 and 6 atomic %; and the O atomic composition in the magnetic recording layer is between about 12 and 20 atomic %, is used. The in-plane distribution of perpendicular coercivity at any points of the medium of the magnetic recording layer is made at most about ±10% of an average value.
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