公开(公告)号：US07280321B2

公开(公告)日：2007-10-09

申请号：US11501844

申请日：2006-08-10

申请人： Katsuro Watanabe ,  Kikuo Kusukawa ,  Kenichi Meguro

发明人： Katsuro Watanabe ,  Kikuo Kusukawa ,  Kenichi Meguro

IPC分类号： G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/313 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/40 ,  G11B2005/3996

摘要： A magnetoresistive head of a type including a magnetoresistive film arranged between a lower shield layer and an upper shield layer, wherein the lower shield layer has a non-magnetic layer adjacent to it and the lower shield layer and the upper shield layer are formed such that their separation at at least part of a boundary between the lower shield layer and the upper shield layer is larger than their separation in a vicinity of the magnetoresistive film, and an insulating film is arranged between the lower shield layer and the upper shield layer, wherein the lower shield layer and the non-magnetic layer adjacent thereto are formed such that they differ in height and there exists a difference in level at their boundary.

摘要翻译： 一种包括布置在下屏蔽层和上屏蔽层之间的磁阻膜的类型的磁阻头，其中下屏蔽层具有与其相邻的非磁性层，并且形成下屏蔽层和上屏蔽层，使得 它们在下屏蔽层和上屏蔽层之间的边界的至少一部分上的分离大于其在磁阻膜附近的分离，并且绝缘膜布置在下屏蔽层和上屏蔽层之间，其中 形成下部屏蔽层和与其相邻的非磁性层，使得它们的高度不同，并且在其边界处存在水平差异。

公开(公告)号：US20060018055A1

公开(公告)日：2006-01-26

申请号：US11166338

申请日：2005-06-24

申请人： Chiseki Haginoya ,  Masahiko Hatatani ,  Chiaki Ishikawa ,  Kenichi Meguro ,  Kazuhiro Nakamoto ,  Katsuro Watanabe

发明人： Chiseki Haginoya ,  Masahiko Hatatani ,  Chiaki Ishikawa ,  Kenichi Meguro ,  Kazuhiro Nakamoto ,  Katsuro Watanabe

IPC分类号： G11B5/127 ,  G11B5/33

CPC分类号： G11B5/3912 ,  G11B5/3163

摘要： In a side shield structure employed to narrow the effective track, a noise caused by the side shield structure can be reduced. In one embodiment, the side shield is inclined with respect to the film plane to suppress the generation of a magnetic pole in the end portion of the side shield. To this end, the side face of a device is inclined at a desired angle. Further, a reproduction device is formed at two or more angles β1 and β2 to improve the track width accuracy.

摘要翻译： 在用于缩小有效轨道的侧屏蔽结构中，可以减少由侧屏蔽结构引起的噪声。 在一个实施例中，侧屏蔽件相对于膜平面倾斜以抑制在侧屏蔽件的端部中产生磁极。 为此，装置的侧面以期望的角度倾斜。 此外，再现装置形成为β1和β2两个或更多个角度以改善轨道宽度精度。

公开(公告)号：US07599151B2

公开(公告)日：2009-10-06

申请号：US10977129

申请日：2004-10-29

申请人： Masahiko Hatatani ,  Chiseki Haginoya ,  Kenichi Meguro ,  Kazuhiro Nakamoto

发明人： Masahiko Hatatani ,  Chiseki Haginoya ,  Kenichi Meguro ,  Kazuhiro Nakamoto

IPC分类号： G11B5/33

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/11 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3932 ,  G11B2005/3996

摘要： Embodiments of the invention provide a magnetic recording and read head which reduces the spread read width in a narrow track having a width of 100 nm or less and shows stable read operation. In one embodiment, a side magnetic shield has a multi-layered structure including non-magnetic separate layers and soft magnetic layers, and the soft magnetic layers are magnetized in opposite directions to reduce a magnetic field induced by the side magnetic shield.

摘要翻译： 本发明的实施例提供一种磁记录读取头，其减小宽度为100nm或更小的窄轨道中的扩展读宽度并且显示稳定的读操作。 在一个实施例中，侧磁屏蔽具有包括非磁性分离层和软磁性层的多层结构，并且软磁层沿相反方向被磁化，以减少由侧磁屏蔽引起的磁场。

公开(公告)号：US07154713B2

公开(公告)日：2006-12-26

申请号：US11322262

申请日：2006-01-03

申请人： Katsuro Watanabe ,  Kikuo Kusukawa ,  Taku Shintani ,  Kenichi Meguro

发明人： Katsuro Watanabe ,  Kikuo Kusukawa ,  Taku Shintani ,  Kenichi Meguro

IPC分类号： G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/102 ,  G11B5/3106 ,  G11B5/3133 ,  G11B5/3163 ,  G11B5/3169 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3912 ,  G11B5/398 ,  G11B5/40 ,  G11B2005/3996

摘要： A high output, magnetoresistive head with a CPP structure is disclosed which reduces or prevents deformation near the air bearing surface of the read element portion layer at the time of air bearing surface processing. In the CPP structure magnetoresistive head, the deformation near the air bearing surface as a result of mechanical polishing during the air bearing surface processing can be reduced by forming deformation prevention layers having a higher shear modulus than the first ferromagnetic layer, and a second ferromagnetic layer between a magnetoresistive film and at least one of a lower shield layer and an upper shield layer.

摘要翻译： 公开了一种具有CPP结构的高输出磁阻头，其在空气轴承表面处理时减小或防止读取元件部分层的空气支承表面附近的变形。 在CPP结构磁阻头中，通过形成具有比第一铁磁层更高的剪切模量的变形防止层，可以减少在空气轴承表面加工期间由于机械抛光而在空气轴承表面附近的变形，以及第二铁磁层 在磁阻膜和下屏蔽层和上屏蔽层中的至少一个之间。

公开(公告)号：US20060274457A1

公开(公告)日：2006-12-07

申请号：US11501844

申请日：2006-08-10

申请人： Katsuro Watanabe ,  Kikuo Kusukawa ,  Kenichi Meguro

发明人： Katsuro Watanabe ,  Kikuo Kusukawa ,  Kenichi Meguro

IPC分类号： G11B5/33

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/313 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/40 ,  G11B2005/3996

摘要： A magnetoresistive head of a type including a magnetoresistive film arranged between a lower shield layer and an upper shield layer, wherein the lower shield layer has a non-magnetic layer adjacent to it and the lower shield layer and the upper shield layer are formed such that their separation at at least part of a boundary between the lower shield layer and the upper shield layer is larger than their separation in a vicinity of the magnetoresistive film, and an insulating film is arranged between the lower shield layer and the upper shield layer, wherein the lower shield layer and the non-magnetic layer adjacent thereto are formed such that they differ in height and there exists a difference in level at their boundary.

摘要翻译： 一种包括布置在下屏蔽层和上屏蔽层之间的磁阻膜的类型的磁阻头，其中下屏蔽层具有与其相邻的非磁性层，并且形成下屏蔽层和上屏蔽层，使得 它们在下屏蔽层和上屏蔽层之间的边界的至少一部分上的分离大于其在磁阻膜附近的分离，并且绝缘膜设置在下屏蔽层和上屏蔽层之间，其中 形成下部屏蔽层和与其相邻的非磁性层，使得它们的高度不同，并且在其边界处存在水平差异。

公开(公告)号：US07092217B2

公开(公告)日：2006-08-15

申请号：US10200139

申请日：2002-07-23

申请人： Katsuro Watanabe ,  Kikuo Kusukawa ,  Kenichi Meguro

发明人： Katsuro Watanabe ,  Kikuo Kusukawa ,  Kenichi Meguro

IPC分类号： G11B5/39

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/313 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/40 ,  G11B2005/3996

摘要： A magnetoresistive head of CPP structure in which an insulating protective film 20 covers at least part of the boundary between the lower shield layer 10 and the non-magnetic film 11 adjacent thereto so as to reduce the area of the lower shield layer which is exposed on the surface of the substrate when the magnetoresistive film is patterned. This construction minimizes damage that occurs when the magnetoresistive film is patterned and also reduces the fraction defective due to current leakage across the upper and lower shields.

公开(公告)号：US07089648B2

公开(公告)日：2006-08-15

申请号：US10896886

申请日：2004-07-23

申请人： Kenichi Meguro ,  Hisashi Kimura ,  Katsuro Watanabe

发明人： Kenichi Meguro ,  Hisashi Kimura ,  Katsuro Watanabe

IPC分类号： G11B5/127 ,  H04R3/00 ,  C21D1/04

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3909 ,  G11B2005/3996 ,  Y10T29/49021 ,  Y10T29/49032 ,  Y10T29/49034 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49128 ,  Y10T29/49155

摘要： There is provided a magnetoresistive head which can realize high sensitivity and low noise even when the reading track is being reduced. Longitudinal biasing is performed to a ferromagnetic free layer whose magnetization is rotated according to an external magnetic field by providing unidirectional magnetic anisotropy by exchange coupling to an antiferromagnetic layer. A hard magnetic film is arranged at the edge of a magnetoresistive film to reduce an effective reading track width.

摘要翻译： 提供了一种磁阻头，即使在读磁道被减小时也能实现高灵敏度和低噪声。 对铁磁自由层进行纵向偏置，其磁化通过与反铁磁层的交换耦合提供单向磁各向异性而根据外部磁场旋转。 在磁阻膜的边缘处布置硬磁膜以减少有效的读取磁道宽度。