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

IPC分类号： G11B5/127 ,  G11B5/35 ,  G11B5/235

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 。

公开(公告)号：US20130155544A1

公开(公告)日：2013-06-20

申请号：US13330570

申请日：2011-12-19

申请人： Tomoaki Hamasaki ,  Hiroyuki Katada ,  Isao Nunokawa ,  Kimitoshi Etoh

发明人： Tomoaki Hamasaki ,  Hiroyuki Katada ,  Isao Nunokawa ,  Kimitoshi Etoh

IPC分类号： G11B5/127 ,  B05D5/12 ,  G11B21/02

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/315

摘要： In one embodiment, a magnetic head includes a main magnetic pole, a trailing shield positioned on a trailing side of the main magnetic pole, a trailing gap positioned between the trailing shield and the main magnetic pole, side shields positioned on either side of the main magnetic pole in a cross-track direction, side gaps positioned between the side shields and the main magnetic pole on either side of the main magnetic pole in the cross-track direction, and trailing shield gaps positioned on either side of the main magnetic pole in the cross-track direction between the trailing shield and the side shields, wherein the trailing shield gaps extend beyond the side gaps in a direction parallel to the cross-track direction. In addition, a method for producing a magnetic head as described above is also disclosed, according to one embodiment.

摘要翻译： 在一个实施例中，磁头包括主磁极，位于主磁极的后侧的后屏蔽，位于后屏蔽和主磁极之间的后置间隙，位于主磁体两侧的侧屏蔽 位于主磁极两侧的侧屏和主磁极之间的横向方向上的侧面间隙以及位于主磁极两侧的后屏蔽间隙 后屏蔽和侧屏蔽之间的交叉轨道方向，其中后屏蔽间隙在平行于交叉轨道方向的方向上延伸超过侧间隙。 此外，根据一个实施例，还公开了如上所述的用于制造磁头的方法。

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。

公开(公告)号：US07715152B2

公开(公告)日：2010-05-11

申请号：US11012990

申请日：2004-12-14

申请人： Tomohiro Okada ,  Isao Nunokawa ,  Masafumi Mochizuki

发明人： Tomohiro Okada ,  Isao Nunokawa ,  Masafumi Mochizuki

IPC分类号： G11B5/127 ,  G11B5/147 ,  G11B5/33

CPC分类号： G11B5/315 ,  G11B5/11 ,  G11B5/112 ,  G11B5/1278

摘要： Embodiments of the invention provide a perpendicular magnetic writing head with a suppressed effective track width to be written on a magnetic medium while increasing writing magnetic field gradient. In one embodiment a trailing side shield is disposed by way of a gap film to a main pole of a perpendicular writing magnetic head. A gap distance (Gt) on a trailing side of the main pole and a gap distance (Gs) on a lateral side of the main pole is defined as Gt

摘要翻译： 本发明的实施例提供一种具有抑制的有效磁道宽度的垂直写磁头，以便在增加磁场梯度的同时写入磁介质。 在一个实施例中，后侧屏蔽件通过间隙膜设置到垂直写入磁头的主极。 主极后侧的间隙距离（Gt）和主极侧面的间隙距离（Gs）定义为Gt

公开(公告)号：US20100091413A1

公开(公告)日：2010-04-15

申请号：US12559349

申请日：2009-09-14

申请人： Isao Nunokawa ,  Mikito Sugiyama ,  Kikuo Kusukawa ,  Hiroyuki Hoshiya

发明人： Isao Nunokawa ,  Mikito Sugiyama ,  Kikuo Kusukawa ,  Hiroyuki Hoshiya

IPC分类号： G11B5/127 ,  C23F1/00

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。

公开(公告)号：US07639452B2

公开(公告)日：2009-12-29

申请号：US11370504

申请日：2006-03-07

申请人： Masafumi Mochizuki ,  Isao Nunokawa

发明人： Masafumi Mochizuki ,  Isao Nunokawa

IPC分类号： G11B5/127

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/3163 ,  Y10T29/49032

摘要： Embodiments of the invention provide an easy-to-fabricate magnetic head which can generate a high magnetic field without eliminating adjacent tracks even if a skew angle is created. In one embodiment, a structure which comprises a pole tip of main pole exposed on the air bearing surface, a part which is recessed from the air bearing surface and having a tapered face at leading side against the air bearing surface, and a magnetic material connected thereto is adopted for the main pole.

摘要翻译： 本发明的实施例提供了一种易于制造的磁头，即使产生偏斜角，也可以产生高磁场而不消除相邻轨迹。 在一个实施例中，包括暴露在空气轴承表面上的主极极极端部的结构，从空气轴承表面凹陷并且在前侧抵靠空气轴承表面具有锥形面的部分，以及连接有磁性材料的磁性材料 主杆采用。

公开(公告)号：US08351162B2

公开(公告)日：2013-01-08

申请号：US11192532

申请日：2005-07-29

申请人： Kimitoshi Etoh ,  Hisashi Kimura ,  Isao Nunokawa ,  Tomohiro Okada

发明人： Kimitoshi Etoh ,  Hisashi Kimura ,  Isao Nunokawa ,  Tomohiro Okada

IPC分类号： G11B5/33 ,  G11B5/147

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/315 ,  G11B5/3163 ,  G11B5/3169 ,  G11B5/3173 ,  G11B5/3967 ,  Y10T29/49041

摘要： Embodiments of the invention reduce the throat height of a single pole type head with high accuracy. In one embodiment, a head with an electro lapping guide for controlling a write head's throat height during air bearing surface processing is made. Air bearing surface processing is performed using the electro lapping guide. For a read head, processing is performed using the read head itself or an electro lapping guide for the read head so that both the throat height of write head and the element height of read head are controlled.

摘要翻译： 本发明的实施例以高精度降低单极型头部的喉部高度。 在一个实施例中，制造具有用于在空气轴承表面处理期间控制写头的喉部高度的电研磨引导件的头部。 使用电动研磨导轨执行空气轴承表面处理。 对于读头，使用读头本身或读头的电研磨引导件进行处理，以便控制写头的喉部高度和读头的元件高度。

公开(公告)号：US08351153B2

公开(公告)日：2013-01-08

申请号：US12559349

申请日：2009-09-14

申请人： Isao Nunokawa ,  Mikito Sugiyama ,  Kikuo Kusukawa ,  Hiroyuki Hoshiya

发明人： Isao Nunokawa ,  Mikito Sugiyama ,  Kikuo Kusukawa ,  Hiroyuki Hoshiya

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。

公开(公告)号：US08203803B2

公开(公告)日：2012-06-19

申请号：US11254138

申请日：2005-10-18

申请人： Kimitoshi Etoh ,  Masafumi Mochizuki ,  Isao Nunokawa ,  Tomohiro Okada

发明人： Kimitoshi Etoh ,  Masafumi Mochizuki ,  Isao Nunokawa ,  Tomohiro Okada

IPC分类号： G11B5/31 ,  G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3116 ,  G11B5/3136 ,  G11B5/315

摘要： Embodiments of the invention are directed to narrowing a read/write gap of a perpendicular magnetic head by applying a wrap around shield, data erasing from return pole edges by returning recording field, and reducing TPR of a magnetic material. In one embodiment, the wrap around shields are formed by partitioning and making Gd, which is the height of the shield at the main pole side in the sensor height direction, smaller than the height of the shield connected to the return pole in the sensor height direction.

摘要翻译： 本发明的实施例涉及通过施加环绕屏蔽来缩小垂直磁头的读/写间隙，通过返回记录场从返回磁极边缘擦除数据，并降低磁性材料的TPR。 在一个实施例中，绕环屏蔽是通过分隔并形成的，Gd是传感器高度方向上的主极侧的屏蔽的高度，小于传感器高度处连接到返回极的屏蔽的高度 方向。

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

IPC分类号： G11B5/187 ,  G11B21/02 ,  G11B5/127 ,  G11B5/17

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。