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31. 发明授权

US06671141B2 Tunnel magnetoresistive effective element, a thin film magnetic head, a magnetic head device and a magnetic disk drive device 失效
标题翻译：隧道磁阻有效元件，薄膜磁头，磁头装置和磁盘驱动装置
公开(公告)号：US06671141B2
公开(公告)日：2003-12-30
申请号：US09805225
申请日：2001-03-14
申请人： Koji Shimazawa , Noriaki Kasahara , Satoru Araki
发明人： Koji Shimazawa , Noriaki Kasahara , Satoru Araki
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/00 , G11B5/012 , G11B5/3903 , G11B5/3909 , G11B5/3967 , G11B2005/3996 , H01F10/3268 , Y10T29/49052
摘要： A ferromagnetic tunnel effective film has a free layer, and a pinned layer and a tunnel barrier layer sandwiched between the free layer and the pinned layer. A bias magnetic field-inductive layer applies a given magnetic field to the free layer, and has its larger width than that of the ferromagnetic tunnel effective film in the bias magnetic field direction. A flux guide layer is stacked with the bias magnetic field-inductive layer, and magnetically combined with the free layer. One end of the flux guide layer constitutes a flux probe portion having its smaller width than that of the bias magnetic field-inductive layer and projecting from the ends of the bias magnetic field-inductive layer.
摘要翻译：铁磁隧道有效膜具有自由层，夹层和隧道势垒层夹在自由层和钉扎层之间。偏置磁场感应层将给定的磁场施加到自由层，并且其宽度大于偏磁场方向上的铁磁隧道有效膜的宽度。助焊剂层与偏置磁场感应层堆叠，并与自由层磁结合。通量引导层的一端构成通量探针部分，其宽度小于偏置磁场感应层的宽度，并从偏置磁场感应层的端部伸出。

32. 发明授权

US06381107B1 Magneto-resistive tunnel junction head having a shield lead rear flux guide 有权
标题翻译：具有屏蔽引线后磁通导向器的磁阻隧道连接头
公开(公告)号：US06381107B1
公开(公告)日：2002-04-30
申请号：US09517570
申请日：2000-03-02
申请人： Olivier Redon , Koji Shimazawa , Noriaki Kasahara , Satoru Araki
发明人： Olivier Redon , Koji Shimazawa , Noriaki Kasahara , Satoru Araki
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3133 , G11B5/3143 , G11B5/3903 , G11B5/3909 , G11B5/3912
摘要： In the present invention, a common lead and shield layer is used so as to be electrically contacted with a tunnel multilayered film for supplying a sense current to the tunnel multilayered film. The common lead and shield layer extends to a rear portion of the tunnel multilayered film from an ABS (Air Bearing Surface) so that a part of the common lead and shield layer located at the rear portion of the tunnel multilayered film serves as a back flux guide for improving a read output. Therefore, a lead gap can be remarkably reduced to easily achieve the high-density recording. Further, a large and stable head output suitable for the ultra-high density recording can be obtained with an improved biasing efficiency.
摘要翻译：在本发明中，使用公共引线和屏蔽层，以便与隧道多层膜电接触，以便向隧道多层膜提供感测电流。公共引线和屏蔽层从ABS（空气轴承表面）延伸到隧道多层膜的后部，使得位于隧道多层膜的后部的公共引线和屏蔽层的一部分用作回流改进读取输出的指南。因此，可以显着降低引线间隙以容易地实现高密度记录。此外，可以以提高的偏压效率获得适合于超高密度记录的大且稳定的头部输出。

33. 发明授权

US07548400B2 Thin-film magnetic head comprising bias layers having a large length in track width direction 失效
标题翻译：薄膜磁头包括在磁道宽度方向上具有大长度的偏置层
公开(公告)号：US07548400B2
公开(公告)日：2009-06-16
申请号：US11066763
申请日：2005-02-28
申请人： Takeo Kagami , Noriaki Kasahara , Kazuki Sato , Takayasu Kanaya
发明人： Takeo Kagami , Noriaki Kasahara , Kazuki Sato , Takayasu Kanaya
IPC分类号： G11B5/33
CPC分类号： G11B5/398 , B82Y25/00 , G01R33/093 , G01R33/098 , G11B5/3932 , G11B2005/0008
摘要： The thin-film magnetic head of the present invention comprises an MR sensor wherein a first ferromagnetic layer in which a magnetization direction is fixed with respect to external magnetic fields, a non-magnetic intermediate layer, and a second ferromagnetic layer in which a magnetization direction changes with respect to the external magnetic fields are stacked, and wherein a sense current flows substantially parallel to the stacked layer surface. The thin-film magnetic head comprises a pair of bias layers for exerting a bias magnetic field upon the MR sensor; the bias layers extending substantially symmetrically from two sides of the MR sensor in a direction of track width of a recording medium, each bias layer being connected with the MR sensor over a length which is substantially the same as the MR sensor in a direction perpendicular to the air bearing surface; and each bias layer having a shape which is contained within an imaginary rectangle which has its long sides along the air bearing surface in the direction of the track width of the recording medium and its short sides in the direction perpendicular to the air bearing surface and which contacts the short side of the imaginary rectangle which is opposite the short side which contacts the MR sensor. The thin-film magnetic head further comprises a pair of lead layers for supplying the sense current to the MR sensor each extending from the air bearing surface to cover at least a portion of each of the bias layers.
摘要翻译：本发明的薄膜磁头包括MR传感器，其中磁化方向相对于外部磁场固定的第一铁磁层，非磁性中间层和第二铁磁层，其中磁化方向相对于外部磁场的变化被堆叠，并且其中感测电流基本上平行于堆叠的层表面流动。薄膜磁头包括用于在MR传感器上施加偏置磁场的一对偏置层; 偏置层在MR传感器的两侧沿着记录介质的磁道宽度的方向基本上对称地延伸，每个偏置层在与MR传感器垂直的方向上与MR传感器基本相同的长度上与MR传感器连接空气轴承表面; 并且每个偏置层具有包含在假想矩形内的形状，该假想矩形具有沿着记录介质的轨道宽度的空气轴承表面的长边，并且在垂直于空气轴承表面的方向上具有短边，接触与MR传感器接触的短边相反的假想矩形的短边。薄膜磁头还包括一对引导层，用于向MR传感器提供感测电流，每个引导层从空气支承表面延伸以覆盖每个偏置层的至少一部分。

34. 发明授权

US07542245B2 Composite thin-film magnetic head with non-magnetic conductive layer to balance parasitic capacitances 有权
标题翻译：具有非磁性导电层的复合薄膜磁头，以平衡寄生电容
公开(公告)号：US07542245B2
公开(公告)日：2009-06-02
申请号：US11348487
申请日：2006-02-07
申请人： Takeo Kagami , Noriaki Kasahara , Tetsuya Kuwashima
发明人： Takeo Kagami , Noriaki Kasahara , Tetsuya Kuwashima
IPC分类号： G11B5/265 , G11B5/31 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3909 , G11B5/3912 , G11B2005/3996
摘要： Composite thin-film magnetic head includes a substrate; a first insulation layer on the substrate; an MR read head element on the first insulation layer and provided with a lower shield layer, an upper shield layer and an MR layer with a sense current flowing perpendicular to a surface of the MR layer though the upper and lower shield layers; a second insulation layer on the MR read head element; an inductive write head element on the second insulation layer and provided with a lower magnetic pole layer, a recording gap layer, an upper magnetic pole layer with end portion opposed to an end portion of the lower magnetic pole layer through the recording gap layer and a write coil; and a nonmagnetic conductive layer electrically conducted with the lower shield layer and opposed to the substrate to increase the electrode area between the lower shield layer and the substrate.
摘要翻译：复合薄膜磁头包括基板; 衬底上的第一绝缘层; 在第一绝缘层上设置MR读头元件，并且具有下屏蔽层，上屏蔽层和MR层，感测电流通过上下屏蔽层垂直于MR层的表面流动; MR读取头元件上的第二绝缘层; 第二绝缘层上的感应式写入头元件，设置有下磁极层，记录间隙层，具有通过记录间隙层与下磁极层的端部相对的端部的上磁极层，以及写线圈以及与下屏蔽层电连接并与基板相对的非磁性导电层，以增加下屏蔽层和基板之间的电极面积。

35. 发明申请

US20080291582A1 Thin film magnetic head, head gimbal assembly, head arm assembly and magnetic disk device 有权
标题翻译：薄膜磁头，头万向架组件，头臂组件和磁盘装置
公开(公告)号：US20080291582A1
公开(公告)日：2008-11-27
申请号：US11802219
申请日：2007-05-21
申请人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
发明人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
IPC分类号： G11B5/10
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/3912 , G11B5/3967 , G11B5/6064
摘要： Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.
摘要翻译：提供一种薄膜磁头，其能够抑制磁道擦除的发生，减少由由薄膜线圈产生的磁通引起的对磁阻元件的影响，并进一步降低寄生电容。薄膜磁头沿堆叠方向依次具有第一磁屏蔽层，磁阻元件，第二磁屏蔽层，第三磁屏蔽层，主磁极层和返回磁轭层。第一和第二磁屏蔽层中的至少一个的轨道宽度方向上的宽度小于第三磁屏蔽层和返回磁轭层的磁道宽度方向上的宽度。

36. 发明申请

US20070274011A1 Magnetoresistive effect element and a thin film magnetic head 审中-公开
标题翻译：磁阻效应元件和薄膜磁头
公开(公告)号：US20070274011A1
公开(公告)日：2007-11-29
申请号：US11783043
申请日：2007-04-05
申请人： Naoki Ohta , Noriaki Kasahara
发明人： Naoki Ohta , Noriaki Kasahara
IPC分类号： G11B5/127
CPC分类号： G11B5/3912 , B82Y10/00 , B82Y25/00 , G11B2005/3996
摘要： The present invention relates to a magnetoresistive (MR) effect element which can effectively reduce a leakage of magnetic flux from a magnetic domain control layer, and a thin film magnetic head which has the MR effect element. The MR effect element has a pair of magnetic domain control layer, each of which magnetically connects a MR effect multilayered structure, and an additional york layer. Each end of the additional york layer is respectively connected with a magnetic domain control layer, and the additional york layer leads magnetic flux from one magnetic domain control layer to another magnetic domain control layer.
摘要翻译：本发明涉及一种磁阻（MR）效应元件，其可以有效地减少来自磁畴控制层的磁通量的泄漏，以及具有MR效应元件的薄膜磁头。 MR效应元件具有一对磁畴控制层，每个磁畴控制层磁连接MR效应多层结构和附加的纽约层。附加约克层的每一端分别与磁畴控制层相连，附加的约克层将磁通量从一个磁畴控制层引导到另一个磁畴控制层。

37. 发明申请

US20050219765A1 Composite type thin-film magnetic head 有权
标题翻译：复合型薄膜磁头
公开(公告)号：US20050219765A1
公开(公告)日：2005-10-06
申请号：US11079677
申请日：2005-03-15
申请人： Hiroshi Kiyono , Nozomu Hachisuka , Shunji Saruki , Noriaki Kasahara
发明人： Hiroshi Kiyono , Nozomu Hachisuka , Shunji Saruki , Noriaki Kasahara
IPC分类号： G11B5/31 , G11B5/127 , G11B5/33 , G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3909 , G11B5/3912 , G11B5/3967 , G11B2005/3996
摘要： A composite type thin-film magnetic head is provided, which comprises: a MR read head element having an upper shield layer, a lower shield layer, an MR layer in which a sense current flows in a direction perpendicular to a surface of the layer through the upper shield layer and the lower shield layer; an inductive write head element formed on the MR read head element, having an upper magnetic pole layer, a recording gap layer, a lower magnetic pole layer where end portion is opposed to an end portion of the upper magnetic pole layer through the recording gap layer, and a write coil; and a capacitance C12 between the write coil and the upper shield layer, set to 0.1 pF or less.
摘要翻译：提供一种复合型薄膜磁头，其包括：MR读取头元件，具有上屏蔽层，下屏蔽层，MR层，其中感测电流沿垂直于该层的表面的方向流动上屏蔽层和下屏蔽层; 形成在MR读头元件上的感应写头元件，具有上磁极层，记录间隙层，下磁极层，其端部通过记录间隙层与上磁极层的端部相对和写入线圈; 和写入线圈和上部屏蔽层之间的电容C 12 12设定为0.1pF以下。

38. 发明授权

US06886239B2 Method of making a thin-film magnetic head having a magnetoresistive device 失效
标题翻译：制造具有磁阻器件的薄膜磁头的方法
公开(公告)号：US06886239B2
公开(公告)日：2005-05-03
申请号：US10309127
申请日：2002-12-04
申请人： Noriaki Kasahara , Tsuneo Kagotani , Hitoshi Hatate
发明人： Noriaki Kasahara , Tsuneo Kagotani , Hitoshi Hatate
IPC分类号： G11B5/31 , G11B5/39 , G11B5/60 , G11B5/127 , G11B5/33 , H04R31/00
CPC分类号： G11B5/3977 , G11B5/3967 , Y10T29/49021 , Y10T29/49041 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： In the method of making a thin-film magnetic head in accordance with the present invention, an electron beam resist is irradiated with electron beams in a state where an electrically conductive member is in contact with a magnetoresistive film. Since the magnetoresistive film electrically connects individual forming positions to be formed with magnetoresistive devices, charges stored near the forming positions upon irradiation with the electron beams can be drawn to the outside by way of the electrically conductive member. As a consequence, the electron beams are less likely to lose their rectilinearity, whereby the writing precision for patterning the magnetoresistive film by electron beam lithography can be improved.
摘要翻译：在制造根据本发明的薄膜磁头的方法中，在导电构件与磁阻膜接触的状态下，用电子束照射电子束抗蚀剂。由于磁阻膜电连接要由磁阻器件形成的各个形成位置，所以在与电子束照射时在形成位置附近存储的电荷可以通过导电构件被吸引到外部。结果，电子束不太可能失去其直线性，从而可以提高通过电子束光刻对磁阻膜进行构图的写入精度。

39. 发明授权

US06792670B2 Method of manufacturing a magnetoresistive element substructure 失效
标题翻译：制造磁阻元件子结构的方法
公开(公告)号：US06792670B2
公开(公告)日：2004-09-21
申请号：US09809278
申请日：2001-03-16
申请人： Kazuki Sato , Noriaki Kasahara , Koji Shimazawa
发明人： Kazuki Sato , Noriaki Kasahara , Koji Shimazawa
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3103 , G11B5/3116 , G11B5/3133 , G11B5/3163 , G11B5/3166 , G11B5/3169 , G11B5/3173 , G11B5/3909 , G11B5/40 , G11B2005/0008 , G11B2005/0016 , G11B2005/3996 , H01F10/08 , H01F10/3254 , H01F41/34 , H01L43/08 , H01L43/12 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method is provided for manufacturing a magnetoresistive device substructure. The substructure includes: a TMR element; a bias field inducing layer that covers the TMR element; and a front flux probe layer formed on the bias field inducing layer and introducing a signal flux to the TMR element. In the manufacturing method, the TMR element and a dummy element are first formed. The dummy element has a shape similar to the TMR element and located in a specific position with respect to the TMR element. Next, the bias field inducing layer is formed on the TMR element in a specific position referring to the position of the dummy element. At the same time, a dummy bias field inducing layer is formed in a position located off the dummy element. Next, the front flux probe layer and a dummy front flux probe layer are formed at the same time on the bias field inducing layer and the dummy element, respectively.
摘要翻译：提供了一种用于制造磁阻器件子结构的方法。子结构包括：TMR元件; 覆盖TMR元件的偏置场感应层; 以及形成在所述偏磁场感应层上并将信号通量引入所述TMR元件的前磁通探测层。在制造方法中，首先形成TMR元件和虚设元件。虚拟元件具有与TMR元件相似的形状并且位于相对于TMR元件的特定位置。接下来，参考虚拟元件的位置，偏置电场感应层在特定位置在TMR元件上形成。同时，虚拟偏置场感应层形成在位于虚拟元件之外的位置。接下来，分别在偏磁场感应层和虚拟元件上同时形成前通量探针层和虚拟前通量探针层。

40. 发明授权

US07843667B2 Thin film magnetic head, head gimbal assembly, head arm assembly and magnetic disk device 有权
标题翻译：薄膜磁头，头万向架组件，头臂组件和磁盘装置
公开(公告)号：US07843667B2
公开(公告)日：2010-11-30
申请号：US11802219
申请日：2007-05-21
申请人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
发明人： Kei Hirata , Norikazu Ota , Yuichi Watabe , Tetsuro Sasaki , Takeo Kagami , Tetsuya Roppongi , Kazuki Sato , Yuji Otsubo , Sohei Horiuchi , Yoshiaki Tanaka , Kenji Yokoyama , Noriaki Kasahara
IPC分类号： G11B5/39 , G11B5/127
CPC分类号： G11B5/3146 , G11B5/11 , G11B5/3912 , G11B5/3967 , G11B5/6064
摘要： Provided is a thin film magnetic head capable of suppressing an occurrence of a track erase, decreasing an influence on a magnetoresistive element caused by a magnetic flux generated from a thin film coil, and further decreasing the parasitic capacity. The thin film magnetic head has, in order in a stacked direction, a first magnetic shield layer, a magnetoresistive element, a second magnetic shield layer, a third magnetic shield layer, a main magnetic pole layer and a return yoke layer. A width in a track width direction of at least one of the first and the second magnetic shield layers is smaller than widths in a track width direction of the third magnetic shield layer and the return yoke layer.
摘要翻译：提供一种薄膜磁头，其能够抑制磁道擦除的发生，减少由由薄膜线圈产生的磁通引起的对磁阻元件的影响，并进一步降低寄生电容。薄膜磁头沿堆叠方向依次具有第一磁屏蔽层，磁阻元件，第二磁屏蔽层，第三磁屏蔽层，主磁极层和返回磁轭层。第一和第二磁屏蔽层中的至少一个的轨道宽度方向上的宽度小于第三磁屏蔽层和返回磁轭层的磁道宽度方向上的宽度。

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