公开(公告)号：US20090059431A1

公开(公告)日：2009-03-05

申请号：US12038354

申请日：2008-02-27

申请人： Hiroaki Kushima ,  Toru Watanabe ,  Kenrou Yamamoto ,  Tetsuya Takahashi ,  Naoki Mukoyama

发明人： Hiroaki Kushima ,  Toru Watanabe ,  Kenrou Yamamoto ,  Tetsuya Takahashi ,  Naoki Mukoyama

IPC分类号： G11B5/60 ,  B23P11/00 ,  B23K1/00

CPC分类号： B23K1/0008 ,  G11B5/4826 ,  Y10T29/49968

摘要： This head gimbals assembly has a head slider, a flexure, and a load beam. The head slider has a head element and slider-side connection terminals. The flexure has a free end, a fixed end, a slider mounting portion and suspension-side connection terminals connected to the slider-side connection terminals. The load beam fixes a fixed end of the flexure on the side opposite to a flexure surface on which the head slider is mounted a connecting portion for interconnecting the suspension-side connection terminals and the slider mounting portion has higher resiliency than other portion of the connecting portion. According to a suspension in the present embodiment, a head gimbals assembly can be easily manufactured without wastefully discarding the suspension even when the desired evaluation result is not obtained because of problems in the head characteristics and the floating surface of the head slider.

摘要翻译： 该头部万向节组件具有头部滑动件，挠曲件和负载梁。 头滑块具有头元件和滑块侧连接端子。 挠曲件具有自由端，固定端，滑块安装部和连接到滑块侧连接端子的悬架侧连接端子。 负载梁将挠性件的固定端固定在安装有磁头滑块的挠曲表面的相对侧上，用于互连悬挂侧连接端子的连接部分和滑块安装部分具有比连接的其它部分更高的弹性 一部分。 根据本实施例的悬架，即使当由于头部滑动头的头部特性和浮动面的问题而不能获得期望的评估结果时，也可以容易地制造头部万向节组件而不浪费地丢弃悬架。

公开(公告)号：US06829122B2

公开(公告)日：2004-12-07

申请号：US09961594

申请日：2001-09-24

申请人： Kenichiro Yamada ,  Naoki Mukoyama ,  Hidehiko Suzuki ,  Hitoshi Kanai

发明人： Kenichiro Yamada ,  Naoki Mukoyama ,  Hidehiko Suzuki ,  Hitoshi Kanai

IPC分类号： G11B539

CPC分类号： B82Y10/00 ,  G11B5/3113 ,  G11B5/3903 ,  G11B5/3929 ,  G11B5/3932

摘要： A magnetic head of a magnetoresistance type is provided. The magnetic head comprises a magnetoresistance film, an underlying layer formed on each of both sides of the magnetoresistance film, and a magnetic-domain regulating film formed on the underlying layer so as to regulate a magnetic domain of a free magnetic layer in the magnetoresistance film. The underlying layer has a laminated structure of a tungsten-(W)-group metal layer formed on a tantalum-(Ta)-group metal layer. The underlying layer is formed so thick as to arrange the magnetic-domain regulating film at a position corresponding to the free magnetic layer.

摘要翻译： 提供磁阻型磁头。 磁头包括磁阻膜，形成在磁阻膜的两侧的每一侧上的下层，以及形成在下层上的磁畴调节膜，以调节磁阻膜中的自由磁性层的磁畴 。 下层具有在钽 - （Ta） - 金属层上形成的钨 - （W） - 金属层的叠层结构。 底层形成得如此厚以便将磁畴调节膜布置在与自由磁性层相对应的位置。

公开(公告)号：US20080118778A1

公开(公告)日：2008-05-22

申请号：US11982935

申请日：2007-11-05

申请人： Hideyuki Akimoto ,  Naoki Mukoyama ,  Jun Masuko

发明人： Hideyuki Akimoto ,  Naoki Mukoyama ,  Jun Masuko

IPC分类号： G11B5/39

CPC分类号： G11B5/59683 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/39 ,  G11B5/3945 ,  H01F10/3218 ,  H01F10/3268 ,  H01L43/08 ,  Y10T428/1121

摘要： A magnetoresistive reproducing head includes first and second free magnetic layers. A non-magnetic layer is provided between the first and second free magnetic layers. A bias applying layer having a single region applies a bias magnetic field in a direction perpendicular to the medium facing plane of the first free-magnetic layer and the second free-magnetic layer. An electrode is electrically connected to the first free-magnetic layer, the second free-magnetic layer, and the non-magnetic layer. In response to a magnetic field generated when a current is applied to the first free-magnetic layer, the second free-magnetic layer, and the non-magnetic layer in a direction perpendicular to the medium facing plane, magnetizations of the first free-magnetic and the second free-magnetic layer are tilted in opposite directions from a direction perpendicular to the medium facing plane.

摘要翻译： 磁阻再现头包括第一和第二自由磁性层。 在第一和第二自由磁性层之间提供非磁性层。 具有单个区域的偏置施加层在垂直于第一自由磁性层和第二自由磁性层的介质面向平面的方向上施加偏置磁场。 电极与第一自由磁性层，第二自由磁性层和非磁性层电连接。 响应于在与第一自由磁性层，第二自由磁性层和非磁性层垂直于介质面对平面的方向施加电流时产生的磁场，第一自由磁性层 并且第二自由磁性层从垂直于介质面对平面的方向向相反方向倾斜。

公开(公告)号：US20080074808A1

公开(公告)日：2008-03-27

申请号：US11710736

申请日：2007-02-26

申请人： Hideyuki Akimoto ,  Naoki Mukoyama

发明人： Hideyuki Akimoto ,  Naoki Mukoyama

IPC分类号： G11B5/33

CPC分类号： G01R33/093 ,  B82Y25/00 ,  G11B5/3166 ,  G11B5/3932 ,  G11B5/455 ,  H01L43/08

摘要： A magnetoresistive element 11 is formed with inclusion of a free layer 12, a pinned layer 13, an antiferromagnetic layer 14 for pinning the pinned layer 13, an intermediate layer 15 provided between the free layer 12 and the pinned layer 13, and a ferromagnetic layer 16 for applying a longitudinal bias magnetic field to the free layer. After initial magnetization, characteristic evaluation is conducted for the magnetoresistive element 11. Intensity of longitudinal bias field is adjusted by magnetizing again in a direction different from that of the initial magnetization, if required, on the basis of the evaluation result.

摘要翻译： 磁阻元件11形成为包括自由层12，钉扎层13，用于固定被钉扎层13的反铁磁层14，设置在自由层12和被钉扎层13之间的中间层15和铁磁层 16，用于将纵向偏置磁场施加到自由层。 在初始磁化之后，对磁阻元件11进行特性评估。 基于评估结果，如果需要，通过再次沿与初始磁化强度不同的方向再次磁化来调整纵向偏置场的强度。

公开(公告)号：US06400519B2

公开(公告)日：2002-06-04

申请号：US09774931

申请日：2001-01-31

申请人： Naoki Mukoyama

发明人： Naoki Mukoyama

IPC分类号： G11B2736

CPC分类号： G11B5/455 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/012 ,  G11B2005/001 ,  G11B2005/0016

摘要： A spin valve magnetoresistive effect type element assessment device includes a head assaying device having a magnetic disk provided with an assaying track where magnetic information is recorded, an oscilloscope for receiving a reproducing signal from an SV head employing an SV element through an amplifier, and a PC for measuring a track profile, namely, data representing relative position dependency of an output from the SV head with respect to the assaying track by controlling the head assaying device and oscilloscope.

摘要翻译： 自旋阀磁阻效应型元件评估装置包括头部测定装置，其具有设置有记录有磁信息的测定轨道的磁盘，用于通过放大器从SV元件接收来自SV头的再现信号的示波器，以及 用于测量轨道轮廓的PC，即通过控制头部测定装置和示波器来表示来自SV头部的输出相对于测定轨迹的相对位置依赖性的数据。

公开(公告)号：US07197813B2

公开(公告)日：2007-04-03

申请号：US09951290

申请日：2001-09-12

申请人： Naoki Mukoyama ,  Kenichiro Yamada ,  Hitoshi Kanai ,  Manabu Watanabe ,  Norikazu Ozaki ,  Kazuaki Satoh

发明人： Naoki Mukoyama ,  Kenichiro Yamada ,  Hitoshi Kanai ,  Manabu Watanabe ,  Norikazu Ozaki ,  Kazuaki Satoh

IPC分类号： G11B5/127 ,  H04R31/00

CPC分类号： B82Y25/00 ,  B82Y40/00 ,  G11B5/3166 ,  G11B5/3903 ,  G11B5/455 ,  G11B2005/0008 ,  H01F41/302 ,  Y10T29/49032 ,  Y10T29/49036 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49128

摘要： The magnetoresistance is measured for a magnetoresistive layered-structure, such as a spin valve film, prior to formation of an upper shield layer as well as patterning of a lower shield layer. The magnetic influence of the upper and lower shield layers can completely be eliminated during the measurement of the magnetoresistance. The magnetoresistive layered-structure is allowed to reliably receive the magnetic field over a wider range including a lower magnetic field range. It is accordingly possible to measure the magnetoresistance properly reflecting the magnetic characteristic of the magnetoresistive layered-structure. It is possible to find deficiency of a magnetoresistive read element at an earlier stage of the method.

摘要翻译： 在形成上屏蔽层之前测量磁电阻，例如自旋阀膜等磁阻层状结构以及下屏蔽层的图案化。 在磁阻测量期间，可以完全消除上下屏蔽层的磁影响。 允许磁阻分层结构在包括较低磁场范围的更宽范围内可靠地接收磁场。 因此，可以测量适当地反映磁阻分层结构的磁特性的磁阻。 在该方法的较早阶段可以发现磁阻读取元件的缺陷。

公开(公告)号：US06851179B2

公开(公告)日：2005-02-08

申请号：US09740602

申请日：2000-12-19

申请人： Junichi Kane ,  Hitoshi Kanai ,  Kenji Noma ,  Naoki Mukoyama

发明人： Junichi Kane ,  Hitoshi Kanai ,  Kenji Noma ,  Naoki Mukoyama

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3163 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996 ,  Y10T29/49032 ,  Y10T29/49043 ,  Y10T29/4906

摘要： The present invention provides a method for producing a magnetic head whose reproduction waveform has small distortions, and forming a hard magnetism layer for applying a bias magnetic field to a magnetoresistive element, which is a multilayer film including a fixed magnetic layer having magnetization fixed to a first direction and a free magnetic layer having an easy axis of magnetization that is directed to a second direction, is formed in an area including at least one of a front area in the first direction and a rear area in the first direction.

摘要翻译： 本发明提供了一种用于制造再现波形具有小失真的磁头的方法，并且形成用于向磁阻元件施加偏置磁场的硬磁层，该磁阻元件是包括具有固定到 第一方向和具有朝向第二方向的易磁化轴的自由磁性层形成在包括第一方向上的前区域和第一方向上的后区域中的至少一个的区域中。

公开(公告)号：US06385018B1

公开(公告)日：2002-05-07

申请号：US09425463

申请日：1999-10-22

申请人： Naoki Mukoyama

发明人： Naoki Mukoyama

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3967 ,  G11B2005/3996

摘要： The magnetoresistive read head comprises a hard magnetic bias layer formed along the end surface of a magnetoresistive layer or spin valve layer extending over the level plane. The tip end of the hard magnetic bias layer reaches or overlaps the top surface of the magnetoresistive layer. The overlap amount is measured from the tip end of the hard magnetic bias layer to the terminal end of the free magnetic layer. The overlap amount smaller than 0.282 &mgr;m serves to reduce Barkhausen noise appearing in the output from the magnetoresistive layer. In addition, when an inclination angle is set larger than 40° between the end surface and the level plane, a larger amount of hard magnetic bias layer is allowed to cover the top surface of the magnetoresistive layer.

摘要翻译： 磁阻读取头包括沿着在电平平面上延伸的磁阻层或自旋阀层的端面形成的硬磁偏置层。 硬磁偏置层的顶端到达或重叠磁阻层顶表面。 重叠量从硬磁偏置层的末端到自由磁性层的末端测量。 小于0.282μm的重叠量用于降低出现在磁阻层的输出中的巴克豪森噪声。 此外，当在端面和平面之间的倾斜角度设定为大于40°时，允许更大量的硬磁偏置层覆盖磁阻层的顶表面。