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公开(公告)号：US20110249360A1
公开(公告)日：2011-10-13
申请号：US12756958
申请日：2010-04-08
申请人： Isao Nunokawa , Mikito Sugiyama , Kikuo Kusukawa , Keizo Kato
发明人： Isao Nunokawa , Mikito Sugiyama , Kikuo Kusukawa , Keizo Kato
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3106 , G11B5/3143 , G11B5/315
摘要： According to one embodiment, a perpendicular magnetic recording head includes a main magnetic pole including a write magnetic pole layer for recording, the write magnetic pole layer comprising magnetic layers being antiferromagnetically coupled via a thin non-magnetic conductor layer between the magnetic layers, wherein the write magnetic pole layer for recording has a flare section which gradually widens in a height-wise direction of a throat height section. The main magnetic pole also includes a non-magnetic cap layer laminated above an uppermost layer of the write magnetic pole layer, the non-magnetic cap layer being textured to provide anisotropy, and a subsidiary magnetic pole layer for supplementing the recording laminated above the non-magnetic cap layer. The head also includes an auxiliary magnetic pole, a magnetic shield positioned via a non-magnetic layer on a trailing edge and both sides of the main magnetic pole in a track width direction, and a coil for generating a recording magnetic field.
摘要翻译： 根据一个实施例，垂直磁记录头包括主磁极，该主磁极包括用于记录的写磁极层，磁磁层包括通过磁性层之间的薄非磁性导体层反铁磁耦合的磁性层，其中， 用于记录的写磁极层具有在喉部高度部分的高度方向上逐渐变宽的喇叭部分。 主磁极还包括层叠在写磁极层的最上层上方的非磁性覆盖层，非磁性覆盖层被纹理化以提供各向异性，以及辅助磁极层，用于补充层叠在非磁性层上方的记录 磁盖层。 磁头还包括一个辅助磁极，一个位于磁道宽度方向的主磁极的后缘和两侧的非磁性层的磁屏蔽以及用于产生记录磁场的线圈。
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公开(公告)号：US08107193B2
公开(公告)日：2012-01-31
申请号：US12756958
申请日：2010-04-08
申请人： Isao Nunokawa , Mikito Sugiyama , Kikuo Kusukawa , Keizo Kato
发明人： Isao Nunokawa , Mikito Sugiyama , Kikuo Kusukawa , Keizo Kato
IPC分类号： G11B5/31
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3106 , G11B5/3143 , G11B5/315
摘要： According to one embodiment, a perpendicular magnetic recording head includes a main magnetic pole including a write magnetic pole layer for recording, the write magnetic pole layer comprising magnetic layers being antiferromagnetically coupled via a thin non-magnetic conductor layer between the magnetic layers, wherein the write magnetic pole layer for recording has a flare section which gradually widens in a height-wise direction of a throat height section. The main magnetic pole also includes a non-magnetic cap layer laminated above an uppermost layer of the write magnetic pole layer, the non-magnetic cap layer being textured to provide anisotropy, and a subsidiary magnetic pole layer for supplementing the recording laminated above the non-magnetic cap layer. The head also includes an auxiliary magnetic pole, a magnetic shield positioned via a non-magnetic layer on a trailing edge and both sides of the main magnetic pole in a track width direction, and a coil for generating a recording magnetic field.
摘要翻译： 根据一个实施例，垂直磁记录头包括主磁极，该主磁极包括用于记录的写磁极层，磁磁层包括通过磁性层之间的薄非磁性导体层反铁磁耦合的磁性层，其中， 用于记录的写磁极层具有在喉部高度部分的高度方向上逐渐变宽的喇叭部分。 主磁极还包括层叠在写磁极层的最上层上方的非磁性覆盖层，非磁性覆盖层被纹理化以提供各向异性，以及辅助磁极层，用于补充层叠在非磁性层上方的记录 磁盖层。 磁头还包括一个辅助磁极，一个位于磁道宽度方向的主磁极的后缘和两侧的非磁性层的磁屏蔽以及用于产生记录磁场的线圈。
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3.发明授权公开(公告)号：US08335051B2
公开(公告)日：2012-12-18
申请号：US12636667
申请日：2009-12-11
申请人： Isao Nunokawa , Mikito Sugiyama , Kikuo Kusukawa , Kimitoshi Etoh
发明人： Isao Nunokawa , Mikito Sugiyama , Kikuo Kusukawa , Kimitoshi Etoh
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3163 , Y10T29/49044
摘要： A recording head having a narrowed track has a high recording magnetic field strength and a high recording magnetic field gradient has certain problems which may be difficult to overcome. In one embodiment, a magnetic film, which overhangs from a track width, is provided on a trailing side of a. region retracted from an ABS of a main pole facing a recording medium. Thereby, a magnetic field strength on the trailing side is increased so that a difference in distribution of magnetic field strength defined by a geometrical bevel angle given to the main pole is increased. Consequently, writing performance of the main pole is improved while forming a large magnetic clearance angle with respect to an adjacent track and suppresses writing into an adjacent track when skew occurs. Other systems and methods are also disclosed regarding a head with a high recording magnetic field using an overhanging magnetic film.
摘要翻译： 具有窄轨道的记录头具有高记录磁场强度，并且高记录磁场梯度具有可能难以克服的某些问题。 在一个实施例中，从从磁道宽度伸出的磁性膜设置在从面向记录介质的主磁极的ABS缩回的区域的后侧。 由此，后侧的磁场强度增加，使得由给予主极的几何斜角确定的磁场强度分布的差异增大。 因此，当相对于相邻的轨道形成大的磁隙角度时，改善了主极的写入性能，并且在发生偏斜时抑制了向相邻轨道的写入。 关于使用悬垂磁性膜的具有高记录磁场的磁头也公开了其它系统和方法。
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4.发明申请公开(公告)号：US20100149697A1
公开(公告)日：2010-06-17
申请号：US12636667
申请日：2009-12-11
申请人： Isao Nunokawa , Mikito Sugiyama , Kikuo Kusukawa , Kimitoshi Etoh
发明人： Isao Nunokawa , Mikito Sugiyama , Kikuo Kusukawa , Kimitoshi Etoh
IPC分类号： G11B5/33
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3163 , Y10T29/49044
摘要： A recording head having a narrowed track has a high recording magnetic field strength and a high recording magnetic field gradient has certain problems which may be difficult to overcome. In one embodiment, a magnetic film, which overhangs from a track width, is provided on a trailing side of a region retracted from an ABS of a main pole facing a recording medium. Thereby, a magnetic field strength on the trailing side is increased so that a difference in distribution of magnetic field strength defined by a geometrical Bevel angle given to the main pole is increased. Consequently, writing performance of the main pole is improved while forming a large magnetic clearance angle with respect to an adjacent track and suppresses writing into an adjacent track when skew occurs. Other systems and methods are also disclosed regarding a head with a high recording magnetic field using an overhanging magnetic film.
摘要翻译： 具有窄轨道的记录头具有高记录磁场强度，并且高记录磁场梯度具有可能难以克服的某些问题。 在一个实施例中，从从磁道宽度伸出的磁性膜设置在从面向记录介质的主磁极的ABS缩回的区域的后侧。 因此，后侧的磁场强度增加，从而增加了由给予主极的几何斜角确定的磁场强度分布的差异。 因此，当相对于相邻的轨道形成大的磁隙角度时，改善了主极的写入性能，并且在发生偏斜时抑制了向相邻轨道的写入。 关于使用悬垂磁性膜的具有高记录磁场的磁头也公开了其它系统和方法。
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5.发明申请公开(公告)号：US20100091413A1
公开(公告)日：2010-04-15
申请号：US12559349
申请日：2009-09-14
CPC分类号： G11B5/1871 , G11B5/1278 , G11B5/232 , G11B5/3116 , G11B5/3163
摘要： According to one embodiment, a magnetic recording head includes a main pole having a throat height portion and a flare portion that is connected to the throat height portion, the flare portion gradually being expanded in width to an upper part in an element height direction. The head also includes a sub pole, magnetic shields disposed via a nonmagnetic layer on a trailing side of the main pole and on both sides in a track width direction of the main pole, and a coil for generating a recording magnetic field from the main pole. The nonmagnetic layer has an upper portion of which the thickness is increased stepwise or in a tapered manner in the element height direction with respect to an ABS side, and each portion of the magnetic shields adjacent to the main pole has a shape corresponding to a surface shape of the nonmagnetic layer.
摘要翻译： 根据一个实施例，磁记录头包括具有喉部高度部分的主极和连接到喉部高度部分的扩张部分，喇叭部分在宽度上逐渐扩大到元件高度方向上的上部。 磁头还包括一个副磁极，通过主磁极的后侧上的非磁性层和主磁极的磁道宽度方向上的两侧设置的磁屏蔽，以及用于从主极产生记录磁场的线圈 。 非磁性层的上部具有相对于ABS侧在元件高度方向上阶梯状或锥形化的增加部分，并且与主极相邻的磁屏蔽的各部分具有与表面对应的形状 非磁性层的形状。
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6.发明授权公开(公告)号：US08351153B2
公开(公告)日：2013-01-08
申请号：US12559349
申请日：2009-09-14
IPC分类号： G11B5/127
CPC分类号： G11B5/1871 , G11B5/1278 , G11B5/232 , G11B5/3116 , G11B5/3163
摘要： According to one embodiment, a magnetic recording head includes a main pole having a throat height portion and a flare portion that is connected to the throat height portion, the flare portion gradually being expanded in width to an upper part in an element height direction. The head also includes a sub pole, magnetic shields disposed via a nonmagnetic layer on a trailing side of the main pole and on both sides in a track width direction of the main pole, and a coil for generating a recording magnetic field from the main pole. The nonmagnetic layer has an upper portion of which the thickness is increased stepwise or in a tapered manner in the element height direction with respect to an ABS side, and each portion of the magnetic shields adjacent to the main pole has a shape corresponding to a surface shape of the nonmagnetic layer.
摘要翻译： 根据一个实施例，磁记录头包括具有喉部高度部分的主极和连接到喉部高度部分的扩张部分，喇叭部分在宽度上逐渐扩大到元件高度方向上的上部。 磁头还包括一个副磁极，通过主磁极的后侧上的非磁性层和主磁极的磁道宽度方向上的两侧设置的磁屏蔽，以及用于从主极产生记录磁场的线圈 。 非磁性层的上部具有相对于ABS侧在元件高度方向上阶梯状或锥形化的增加部分，并且与主极相邻的磁屏蔽的各部分具有与表面对应的形状 非磁性层的形状。
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公开(公告)号：US20090154021A1
公开(公告)日：2009-06-18
申请号：US12313621
申请日：2008-11-20
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/312 , G11B5/3146
摘要： Embodiments of the present invention provide a magnetic head that can stably supply a perpendicular magnetic field component while generating high recording field strength from a main pole. According to one embodiment, a magnetic body is deposited in a trailing side of a pole tip of a main pole via a nonmagnetic layer, so that a second flare section is magnetically coupled with each sidewall.
摘要翻译： 本发明的实施例提供一种可以稳定地提供垂直磁场分量同时从主极产生高记录磁场强度的磁头。 根据一个实施例，磁体经由非磁性层沉积在主极的极尖的后侧，使得第二扩张部与每个侧壁磁耦合。
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公开(公告)号：US09047885B2
公开(公告)日：2015-06-02
申请号：US12313608
申请日：2008-11-21
申请人： Mikito Sugiyama , Isao Nunokawa , Hiroyuki Hoshiya
发明人： Mikito Sugiyama , Isao Nunokawa , Hiroyuki Hoshiya
CPC分类号： G11B5/1278 , G11B5/112 , G11B5/3116 , G11B5/3146 , G11B5/315 , G11B5/3163
摘要： Embodiments of the present invention provide a perpendicular magnetic recording head which can suppress reduction in recording field and efficiently reduce a fringe field. According to one embodiment, a side shield disposed at a side of each side face in a cross track direction of a main pole is arranged at a far leading side compared with the main pole.
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公开(公告)号：US08824103B2
公开(公告)日：2014-09-02
申请号：US13404029
申请日：2012-02-24
申请人： Masato Shiimoto , Kenji Sugiura , Mikito Sugiyama , Isao Nunokawa , Yo Sato , Katsuro Watanabe , Kazuhiko Hosomi , Nobuo Yoshida
发明人： Masato Shiimoto , Kenji Sugiura , Mikito Sugiyama , Isao Nunokawa , Yo Sato , Katsuro Watanabe , Kazuhiko Hosomi , Nobuo Yoshida
CPC分类号： G11B5/314 , G11B2005/0024
摘要： The strength of a magnetic field applied from a main pole to an oscillator and the strength of a magnetic field applied from the main pole to a recording medium are improved in a magnetic recording head for microwave assisted recording. In the magnetic recording head according to the present invention, an interval between the main pole and a trailing shield at a place in a position above an air bearing surface is larger than an interval between the main pole and the trailing shield on the air bearing surface.
摘要翻译： 用于微波辅助记录的磁记录头改善了从主极施加到振荡器的磁场的强度和从主极施加到记录介质的磁场的强度。 在根据本发明的磁记录头中，在空气轴承表面上方的位置处的主极和后挡板之间的间隔大于空气轴承表面上的主极和后挡板之间的间隔 。
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10.发明申请公开(公告)号：US20100157484A1
公开(公告)日：2010-06-24
申请号：US12636659
申请日：2009-12-11
申请人： Kimitoshi Etoh , Mikito Sugiyama , Isao Nunokawa , Tomohiro Okada
发明人： Kimitoshi Etoh , Mikito Sugiyama , Isao Nunokawa , Tomohiro Okada
IPC分类号： G11B5/33
CPC分类号： G11B5/1278 , G11B5/3116 , G11B5/315 , G11B5/3163 , Y10T29/49032
摘要： A perpendicular recording magnetic head is provided, according to one embodiment, in which even if a thickness of a main pole is reduced corresponding to a reduction in a recording track width, recording performance is not degraded. A magnetic-field auxiliary pole and a nonmagnetic layer are stacked on a main pole, and a nonmagnetic portion is provided on each side face on a flying surface side of the magnetic-field auxiliary pole and the nonmagnetic layer, in one approach. In all regions except for a region near a flying surface, an interval between the main pole and a shield is increased by the nonmagnetic portion and the nonmagnetic layer, so that magnetic field loss is prevented, and consequently magnetic field strength and a magnetic field gradient are increased. Other systems and methods are also disclosed for retaining magnetic recording performance while reducing a thickness of a main pole.
摘要翻译： 根据一个实施例，提供垂直记录磁头，其中即使根据记录磁道宽度的减小而减小主磁极的厚度，记录性能也不会降低。 磁场辅助极和非磁性层堆叠在主极上，并且在磁场辅助极和非磁性层的飞表面侧的每个侧面上设置非磁性部分。 除了靠近飞行表面的区域以外的所有区域中，通过非磁性部分和非磁性层增加了主极和屏蔽之间的间隔，从而防止了磁场损耗，因此磁场强度和磁场梯度 增加了。 还公开了用于保持磁记录性能同时减小主极的厚度的其它系统和方法。
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