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1. 发明授权

US07440240B2 Magnetic head with domain stabilization and magnetic recording/reproducing apparatus using the same 失效
标题翻译：具有域稳定性的磁头和使用其的磁记录/再现装置
公开(公告)号：US07440240B2
公开(公告)日：2008-10-21
申请号：US11102067
申请日：2005-04-08
申请人： Hiroyuki Hoshiya , Katsumi Hoshino , Masahiko Hatatani , Kenichi Meguro
发明人： Hiroyuki Hoshiya , Katsumi Hoshino , Masahiko Hatatani , Kenichi Meguro
IPC分类号： G11B5/33
CPC分类号： B82Y10/00 , G11B5/3903 , G11B5/3932
摘要： Embodiments of the invention provide a spin-valve type magnetic head that satisfies the requirements of both high read output and stability with narrow tracks. In one embodiment, a domain control film is formed on a magnetoresistive layered film in the same track width. A double closed flux path structure that uses three magnetic layers is employed with magnetic coupled structure in both ends of the track. The three magnetic layers are a soft magnetic free layer, a domain-stabilization ferromagnetic layer, and a soft magnetic anti-parallel layer.
摘要翻译：本发明的实施例提供一种自旋阀式磁头，其满足窄读出输出和稳定性两个要求。在一个实施例中，域控制膜以相同的轨道宽度形成在磁阻层叠膜上。使用三个磁性层的双闭合磁通路径结构在磁道的两端采用磁耦合结构。三个磁性层是软磁自由层，畴稳定铁磁层和软磁反平行层。

2. 发明申请

US20050225907A1 Magnetic head with domain stabilization and magnetic recording/reproducing apparatus using the same 失效
标题翻译：具有域稳定性的磁头和使用其的磁记录/再现装置
公开(公告)号：US20050225907A1
公开(公告)日：2005-10-13
申请号：US11102067
申请日：2005-04-08
申请人： Hiroyuki Hoshiya , Katsumi Hoshino , Masahiko Hatatani , Kenichi Meguro
发明人： Hiroyuki Hoshiya , Katsumi Hoshino , Masahiko Hatatani , Kenichi Meguro
IPC分类号： G11B5/127 , G11B5/33 , G11B5/39 , H01L43/08
CPC分类号： B82Y10/00 , G11B5/3903 , G11B5/3932
摘要： Embodiments of the invention provide a spin-valve type magnetic head that satisfies the requirements of both high read output and stability with narrow tracks. In one embodiment, a domain control film is formed on a magnetoresistive layered film in the same track width. A double closed flux path structure that uses three magnetic layers is employed with magnetic coupled structure in both ends of the track. The three magnetic layers are a soft magnetic free layer, a domain-stabilization ferromagnetic layer, and a soft magnetic anti-parallel layer.
摘要翻译：本发明的实施例提供一种自旋阀式磁头，其满足窄读出输出和稳定性两个要求。在一个实施例中，域控制膜以相同的轨道宽度形成在磁阻层叠膜上。使用三个磁性层的双闭合磁通路径结构在磁道的两端采用磁耦合结构。三个磁性层是软磁自由层，畴稳定铁磁层和软磁反平行层。

3. 发明授权

US07599151B2 Magnetic head with laminated side shields 有权
标题翻译：磁头与层压侧面屏蔽
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。

4. 发明授权

US06937449B2 Spin-valve head containing closed-flux-structure domain control films 失效
标题翻译：旋转阀头包含封闭通量结构域控制膜
公开(公告)号：US06937449B2
公开(公告)日：2005-08-30
申请号：US10077854
申请日：2002-02-20
申请人： Hiroyuki Hoshiya , Masahiko Hatatani , Hisashi Kimura , Hiroshi Ide
发明人： Hiroyuki Hoshiya , Masahiko Hatatani , Hisashi Kimura , Hiroshi Ide
IPC分类号： G01R33/09 , G11B5/39 , H01F10/28 , H01F10/32 , H01L43/08
CPC分类号： B82Y10/00 , G11B5/3903 , G11B5/3967
摘要： To provide a spin-valve type magnetic head having high read output even if track width is narrow and high stability, a magnetic head according to the invention is provided with a spin-valve type magnetoresistive element in which a single magnetic domain turning ferromagnetic layer is formed on a soft magnetic free layer via a non-magnetic separating layer, the soft magnetic free layer and the single magnetic domain turning ferromagnetic layer are magnetostatically coupled at the end of track width, a closed magnetic circuit is formed and the soft magnetic layer has magnetization substantially induced in a direction substantially perpendicular to an external magnetic field.
摘要翻译：为了提供具有高读取输出的自旋阀式磁头，即使磁道宽度窄且稳定性高，根据本发明的磁头设置有自旋阀型磁阻元件，其中单个磁畴转动铁磁层为通过非磁性分离层形成在软磁自由层上，软磁自由层和单磁畴转动铁磁层在磁道宽度末端被静磁耦合，形成闭合磁路，软磁层具有在大致垂直于外部磁场的方向上大致感应出磁化。

5. 发明申请

US20060018055A1 Magnetic head with side shield and manufacturing method thereof 失效
标题翻译：带侧面屏蔽的磁头及其制造方法
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。

6. 发明授权

US07535683B2 Magnetoresistive head with improved in-stack longitudinal biasing layers 失效
标题翻译：具有改进的堆叠纵向偏置层的磁阻头和制造方法
公开(公告)号：US07535683B2
公开(公告)日：2009-05-19
申请号：US10977324
申请日：2004-10-29
申请人： Kenichi Meguro , Kouichi Nishioka , Masahiko Hatatani , Chiseki Haginoya
发明人： Kenichi Meguro , Kouichi Nishioka , Masahiko Hatatani , Chiseki Haginoya
IPC分类号： G11B5/39 , G11B5/127
CPC分类号： G11B5/3912 , G11B5/3932
摘要： A magnetoresistive head and a fabricating method thereof accomplishing high sensitivity and low noise are provided even if track width narrowing makes progress. In one embodiment, a pinned layer includes a laminate which includes at least two magnetic layers and where adjacent magnetic layers are coupled antiferromagnetically to each other, and a mechanism to apply a longitudinal biasing field to a free layer is made to function by laminating a nonmagnetic separate layer/longitudinal biasing layer/antiferromagnetic layer connecting the free layer and opposite a nonmagnetic conductive layer (or nonmagnetic tunneling barrier layer). Controlling a magnetization direction of the longitudinal biasing layer which bears application of a longitudinal biasing field to the pinned layer and free layer is achieved by annealing carried out while applying a magnetic field in a track width direction and applying a magnetic field at room temperature.
摘要翻译：即使进行轨道宽度变窄，也提供了实现高灵敏度和低噪声的磁阻头及其制造方法。在一个实施例中，钉扎层包括层压体，其包括至少两个磁性层，并且其中相邻磁性层彼此反铁磁耦合，并且通过层叠非磁性的作用将纵向偏置场施加到自由层连接自由层并且与非磁性导电层（或非磁性隧道势垒层）相对的单独层/纵向偏置层/反铁磁性层。通过在轨道宽度方向施加磁场并在室温下施加磁场的同时进行退火来控制施加纵向偏置场的纵向偏置层的磁化方向到被钉扎层和自由层。

7. 发明授权

US07505232B2 Magnetic head with side shield and manufacturing method thereof 失效
标题翻译：带侧面屏蔽的磁头及其制造方法
公开(公告)号：US07505232B2
公开(公告)日：2009-03-17
申请号：US11166338
申请日：2005-06-24
申请人： Chiseki Haginoya , Masahiko Hatatani , Chiaki Ishakawa , Kenichi Meguro , Kazuhiro Nakamoto , Katsuro Watanabe
发明人： Chiseki Haginoya , Masahiko Hatatani , Chiaki Ishakawa , Kenichi Meguro , Kazuhiro Nakamoto , Katsuro Watanabe
IPC分类号： G11B5/39
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，再现装置以两个或多个角度β1和β2形成，以提高轨道宽度精度。

8. 发明申请

US20050162786A1 Magnetoresistive head with improved in-stack longitudinal biasing layers and fabricating method 失效
标题翻译：具有改进的堆叠纵向偏置层的磁阻头和制造方法
公开(公告)号：US20050162786A1
公开(公告)日：2005-07-28
申请号：US10977324
申请日：2004-10-29
申请人： Kenichi Meguro , Kouichi Nishioka , Masahiko Hatatani , Chiseki Haginoya
发明人： Kenichi Meguro , Kouichi Nishioka , Masahiko Hatatani , Chiseki Haginoya
IPC分类号： G11B5/127 , G11B5/33 , G11B5/39 , H01F10/32 , H01L43/08
CPC分类号： G11B5/3912 , G11B5/3932
摘要： A magnetoresistive head and a fabricating method thereof accomplishing high sensitivity and low noise are provided even if track width narrowing makes progress. In one embodiment, a pinned layer includes a laminate which includes at least two magnetic layers and where adjacent magnetic layers are coupled antiferromagnetically to each other, and a mechanism to apply a longitudinal biasing field to a free layer is made to function by laminating a nonmagnetic separate layer/longitudinal biasing layer/antiferromagnetic layer connecting the free layer and opposite a nonmagnetic conductive layer (or nonmagnetic tunneling barrier layer). Controlling a magnetization direction of the longitudinal biasing layer which bears application of a longitudinal biasing field to the pinned layer and free layer is achieved by annealing carried out while applying a magnetic field in a track width direction and applying a magnetic field at room temperature.
摘要翻译：即使进行轨道宽度变窄，也提供了实现高灵敏度和低噪声的磁阻头及其制造方法。在一个实施例中，钉扎层包括层压体，其包括至少两个磁性层，并且其中相邻磁性层彼此反铁磁耦合，并且通过层叠非磁性的作用将纵向偏置场施加到自由层连接自由层并且与非磁性导电层（或非磁性隧道势垒层）相对的单独层/纵向偏置层/反铁磁性层。通过在轨道宽度方向施加磁场并在室温下施加磁场的同时进行退火来控制施加纵向偏置场的纵向偏置层的磁化方向到被钉扎层和自由层。

9. 发明申请

US20050157431A1 Magnetic head and recording and playback drive 有权
标题翻译：磁头和录音和播放驱动
公开(公告)号：US20050157431A1
公开(公告)日：2005-07-21
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： G11B5/39 , G11B5/11 , G11B5/33 , G11B5/667
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。

10. 发明申请

US20090262465A1 Magnetic head and manufacturing method thereof 有权
标题翻译：磁头及其制造方法
公开(公告)号：US20090262465A1
公开(公告)日：2009-10-22
申请号：US12386458
申请日：2009-04-17
申请人： Masahiko Hatatani , Katsuro Watanabe , Nubuo Yoshida , Katsumi Hoshino
发明人： Masahiko Hatatani , Katsuro Watanabe , Nubuo Yoshida , Katsumi Hoshino
IPC分类号： G11B5/33 , B05D5/12
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3912 , G11B5/3932 , G11B2005/3996
摘要： Embodiments of the present invention provide a magnetic head having a read head of stable reading operation and with less magnetic fluctuation noise. According to one embodiment, a free layer has a structure comprising two ferromagnetic layers (a first free layer and a second free layer) that are coupled anti-ferromagnetically by way of a non-magnetic intermediate layer, in which the magnetization amount of the first free layer is set to larger than the magnetization amount of the second free layer. Further, the magnetic domains in the first free layer and the second free layer are stabilized simultaneously by increasing the distance between the second free layer and the magnetic domain control film to be more than the distance between the first free layer and the magnetic domain control film, thereby adjusting the magnetization amount of the magnetic domain control film. Further, the volume of the entire free layer is increased thereby greatly decreasing the magnetic fluctuation noises, to obtain a read head showing a high SN ratio.
摘要翻译：本发明的实施例提供了一种具有稳定读取操作的读取头并具有较小的磁波动噪声的磁头。根据一个实施例，自由层具有包括通过非磁性中间层反铁磁耦合的两个铁磁层（第一自由层和第二自由层）的结构，其中第一自由层被设定为大于第二自由层的磁化量。此外，第一自由层和第二自由层中的磁畴通过将第二自由层和磁畴控制膜之间的距离增大到第一自由层和磁畴控制膜之间的距离而同时稳定从而调整磁畴控制膜的磁化量。此外，整个自由层的体积增加，从而大大降低磁波动噪声，以获得显示高SN比的读头。

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