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1. 发明授权

US08547091B2 Method for measuring resistance of resistor connected with MR element in parallel 失效
标题翻译：测量与MR元件并联电阻的电阻的方法
公开(公告)号：US08547091B2
公开(公告)日：2013-10-01
申请号：US12967492
申请日：2010-12-14
申请人： Takekazu Yamane , Naomichi Degawa
发明人： Takekazu Yamane , Naomichi Degawa
IPC分类号： G01R33/02
CPC分类号： G01R33/093 , B82Y25/00
摘要： A measuring method measuring a resistance of a resistor of a magnetic sensor that includes the resistor is provided. The method includes a step of measuring an output voltage of the magnetic sensor in an AC magnetic field, a step of measuring a first combined resistance of the MR element and the resistor in no magnetic field, a step of measuring a second combined resistance of the MR element and the resistor in a constant magnetic field of which a direction and strength are substantially the same as a magnetic field, a step of measuring a third combined resistance of the MR element and the resistor in another constant magnetic field of which a direction and strength are substantially the same as another magnetic field, and a step of calculating the resistance of the resistor based on the output voltage, the first, second and third combined resistance.
摘要翻译：提供了测量包括电阻器的磁传感器的电阻器的电阻的测量方法。该方法包括在交流磁场中测量磁传感器的输出电压的步骤，测量无磁场中MR元件和电阻器的第一组合电阻的步骤，测量第一组合电阻的步骤 MR元件和电阻器，其恒定磁场中的方向和强度基本上与磁场相同;在另一恒定磁场中测量MR元件和电阻器的第三组合电阻的步骤，该恒定磁场中的方向和强度与强度基本上与另一磁场相同，以及基于输出电压，第一，第二和第三组合电阻计算电阻器的电阻的步骤。

2. 发明授权

US08402635B2 Method of manufacturing a magnetic head including shield layers which surround a MR element 有权
标题翻译：制造包括围绕MR元件的屏蔽层的磁头的方法
公开(公告)号：US08402635B2
公开(公告)日：2013-03-26
申请号：US13052674
申请日：2011-03-21
申请人： Naomichi Degawa , Takumi Yanagisawa , Satoshi Miura , Yoshikazu Sawada , Takahiko Machita , Kenzo Makino , Takekazu Yamane , Shohei Kawasaki
发明人： Naomichi Degawa , Takumi Yanagisawa , Satoshi Miura , Yoshikazu Sawada , Takahiko Machita , Kenzo Makino , Takekazu Yamane , Shohei Kawasaki
IPC分类号： G11B5/127 , H04R31/00
CPC分类号： G11B5/3912 , G01R33/093 , G11B5/3163 , G11B5/398 , H01L43/12 , Y10T29/49021 , Y10T29/49043 , Y10T29/49044 , Y10T29/49046 , Y10T29/49048 , Y10T29/49052
摘要： A method of manufacturing a magnetic head, including a magneto resistance effect (MR) element that reads a magnetic recording medium, is disclosed. A multilayer film is formed on a shield layer. Unnecessary portions of the multilayer film are removed from both sides of the MR element in a first direction orthogonal to a lamination direction of the multilayer film and parallel to the MR element surface facing the magnetic recording medium. An insulating layer is formed on a surface exposed by removal of the unnecessary portions. An integrated soft magnetic layer covering both sides of the MR element in the first direction and an upper side of the MR element is formed, thereby configuring a second shield layer. An anisotropy application layer is formed on the second shield layer, thereby providing exchange anisotropy to the soft magnetic layer, and magnetizing the soft magnetic layer in a predetermined direction.
摘要翻译：公开了一种制造磁头的方法，该磁头包括读取磁记录介质的磁阻效应（MR）元件。在屏蔽层上形成多层膜。在与多层膜的层叠方向正交的第一方向上并且平行于面向磁记录介质的MR元件表面，从MR元件的两侧除去多余膜的不必要部分。在通过去除不需要的部分暴露的表面上形成绝缘层。形成了在MR元件的第一方向的两侧和MR元件的上侧覆盖的集成软磁性层，从而构成第二屏蔽层。在第二屏蔽层上形成各向异性涂布层，从而为软磁层提供交换各向异性，并在预定方向上使软磁层磁化。

3. 发明申请

US20120250189A1 MAGNETIC HEAD INCLUDING SIDE SHIELD LAYERS ON BOTH SIDES OF A MR ELEMENT 审中-公开
标题翻译：磁头包括一个MR元件两侧的侧面屏蔽层
公开(公告)号：US20120250189A1
公开(公告)日：2012-10-04
申请号：US13074272
申请日：2011-03-29
申请人： Naomichi DEGAWA , Takumi Yanagisawa , Satoshi Miura , Yoshikazu Sawada , Takahiko Machita , Kenzo Makino , Takekazu Yamane , Shohei Kawasaki
发明人： Naomichi DEGAWA , Takumi Yanagisawa , Satoshi Miura , Yoshikazu Sawada , Takahiko Machita , Kenzo Makino , Takekazu Yamane , Shohei Kawasaki
IPC分类号： G11B5/39 , G11B5/60
CPC分类号： G11B5/3912 , G01R33/093 , G11B5/3909 , G11B2005/3996
摘要： A magnetic head that reads information of a magnetic recording medium is provided. The magnetic head according to one embodiment includes: an MR element, formed with multilayer films, of which an electrical resistance changes according to an external magnetic field; a first shield layer that is disposed on a lower side in an lamination direction of the MR element; a second shield layer that is disposed on an upper side in the lamination direction of the MR element, and that applies voltage to the MR element together with the first shield layer; and side shield layers that are disposed on both sides of the MR element in a truck width direction. The side shield layers include soft magnetic layers and hard magnetic layers magnetized in a predetermined direction.
摘要翻译：提供读取磁记录介质的信息的磁头。根据一个实施例的磁头包括：由多层膜形成的MR元件，其电阻根据外部磁场而改变; 第一屏蔽层，其设置在所述MR元件的层叠方向的下侧; 第二屏蔽层，其设置在所述MR元件的层叠方向的上侧，并且与所述第一屏蔽层一起向所述MR元件施加电压; 以及侧向屏蔽层，其设置在卡车宽度方向上的MR元件的两侧。侧面屏蔽层包括在预定方向上被磁化的软磁性层和硬磁性层。

4. 发明申请

US20120087046A1 THIN FILM MAGNETIC HEAD INCLUDING SOFT LAYER MAGNETICALLY CONNECTED WITH SHIELD 有权
标题翻译：薄膜磁头包括与屏蔽电磁连接的软层
公开(公告)号：US20120087046A1
公开(公告)日：2012-04-12
申请号：US12900879
申请日：2010-10-08
申请人： Takumi Yanagisawa , Yasushi Nishioka , Takahiko Machita , Satoshi Miura , Takayasu Kanaya , Kenzo Makino , Yoshikazu Sawada , Takekazu Yamane , Naomichi Degawa , Kosuke Tanaka , Soji Koide , Daisuke Miyauchi
发明人： Takumi Yanagisawa , Yasushi Nishioka , Takahiko Machita , Satoshi Miura , Takayasu Kanaya , Kenzo Makino , Yoshikazu Sawada , Takekazu Yamane , Naomichi Degawa , Kosuke Tanaka , Soji Koide , Daisuke Miyauchi
IPC分类号： G11B5/127 , G11B21/24 , G11B5/48
CPC分类号： G11B5/3912 , G01R33/098 , G11B5/3932 , H01F10/3254 , H01F10/3272 , H01L43/08
摘要： A thin film magnetic head includes: a magneto resistance effect film of which electrical resistance varies corresponding to an external magnetic field; a pair of shields provided on both sides in a manner of sandwiching the MR film in a direction that is orthogonal to a film surface of the MR film; an anisotropy providing layer that provides exchange anisotropy to a first shield of the pair of shields in order to magnetize the first shield in a desired direction, and that is disposed on the opposite side from the MR film with respect to the first shield; and side shields that are disposed on both sides of the MR film in a track width direction and that include soft magnetic layers magnetically connected with the first shield.
摘要翻译：薄膜磁头包括：电阻效应膜，其电阻根据外部磁场而变化; 一对屏蔽，以与MR膜的膜表面正交的方向夹持MR膜的方式设置在两侧; 各向异性提供层，其向所述一对屏蔽件的第一屏蔽提供交换各向异性，以便在所需方向上磁化所述第一屏蔽，并且相对于所述第一屏蔽设置在与所述MR膜相反的一侧上; 以及侧面屏蔽，其设置在MR膜的轨道宽度方向的两侧，并且包括与第一屏蔽件磁性连接的软磁性层。

5. 发明授权

US08456962B2 Magnetic head for microwave assisted magnetic recording 有权
标题翻译：磁头用于微波辅助磁记录
公开(公告)号：US08456962B2
公开(公告)日：2013-06-04
申请号：US13076793
申请日：2011-03-31
申请人： Takekazu Yamane , Yoshikazu Soeno , Akimasa Kaizu , Naomichi Degawa , Hayato Koike
发明人： Takekazu Yamane , Yoshikazu Soeno , Akimasa Kaizu , Naomichi Degawa , Hayato Koike
IPC分类号： G11B11/00 , G11B5/17
CPC分类号： G11B5/314 , G11B2005/0024
摘要： A magnetic head that writes information to a recording medium includes a magnetic pole layer that generates a writing magnetic field to the recording medium, a microstripline that is disposed in proximity to the magnetic pole layer and to which high frequency current is applied, and a ferromagnetic thin film that is disposed on a portion of the microstripline that faces the recording medium, and that generates a high frequency alternate-current (AC) magnetic field to be applied to the recording medium, using a current magnetic field generated on the microstripline due to the high frequency current.
摘要翻译：将信息写入记录介质的磁头包括：向记录介质产生写入磁场的磁极层;布置在磁极层附近并施加高频电流的微带线;以及铁磁层薄膜，其设置在面向记录介质的微带线的一部分上，并且使用由于在微带线上产生的电流磁场而产生施加到记录介质的高频交流（AC）磁场高频电流。

6. 发明申请

US20120250472A1 MAGNETIC HEAD FOR MICROWAVE ASSISTED MAGNETIC RECORDING 有权
标题翻译：用于微波辅助磁记录的磁头
公开(公告)号：US20120250472A1
公开(公告)日：2012-10-04
申请号：US13076793
申请日：2011-03-31
申请人： Takekazu YAMANE , Yoshikazu Soeno , Akimasa Kaizu , Naomichi Degawa , Hayato Koike
发明人： Takekazu YAMANE , Yoshikazu Soeno , Akimasa Kaizu , Naomichi Degawa , Hayato Koike
IPC分类号： G11B11/00 , G11B5/48
CPC分类号： G11B5/314 , G11B2005/0024
摘要： A magnetic head that writes information to a recording medium includes a magnetic pole layer that generates a writing magnetic field to the recording medium, a microstripline that is disposed in proximity to the magnetic pole layer and to which high frequency current is applied, and a ferromagnetic thin film that is disposed on a portion of the microstripline that faces the recording medium, and that generates a high frequency alternate-current (AC) magnetic field to be applied to the recording medium, using a current magnetic field generated on the microstripline due to the high frequency current.
摘要翻译：将信息写入记录介质的磁头包括：向记录介质产生写入磁场的磁极层;布置在磁极层附近并施加高频电流的微带线;以及铁磁层薄膜，其设置在面向记录介质的微带线的一部分上，并且使用由于在微带线上产生的电流磁场而产生施加到记录介质的高频交流（AC）磁场高频电流。

7. 发明授权

US08462467B2 Thin film magnetic head including soft layer magnetically connected with shield 有权
标题翻译：薄膜磁头包括与屏蔽层磁性连接的软层
公开(公告)号：US08462467B2
公开(公告)日：2013-06-11
申请号：US12900879
申请日：2010-10-08
申请人： Takumi Yanagisawa , Yasushi Nishioka , Takahiko Machita , Satoshi Miura , Takayasu Kanaya , Kenzo Makino , Yoshikazu Sawada , Takekazu Yamane , Naomichi Degawa , Kosuke Tanaka , Soji Koide , Daisuke Miyauchi
发明人： Takumi Yanagisawa , Yasushi Nishioka , Takahiko Machita , Satoshi Miura , Takayasu Kanaya , Kenzo Makino , Yoshikazu Sawada , Takekazu Yamane , Naomichi Degawa , Kosuke Tanaka , Soji Koide , Daisuke Miyauchi
IPC分类号： G11B5/39
CPC分类号： G11B5/3912 , G01R33/098 , G11B5/3932 , H01F10/3254 , H01F10/3272 , H01L43/08
摘要： A thin film magnetic head includes: a magneto resistance effect film of which electrical resistance varies corresponding to an external magnetic field; a pair of shields provided on both sides in a manner of sandwiching the MR film in a direction that is orthogonal to a film surface of the MR film; an anisotropy providing layer that provides exchange anisotropy to a first shield of the pair of shields in order to magnetize the first shield in a desired direction, and that is disposed on the opposite side from the MR film with respect to the first shield; and side shields that are disposed on both sides of the MR film in a track width direction and that include soft magnetic layers magnetically connected with the first shield.
摘要翻译：薄膜磁头包括：电阻效应膜，其电阻根据外部磁场而变化; 一对屏蔽，以与MR膜的膜表面正交的方向夹持MR膜的方式设置在两侧; 各向异性提供层，其向所述一对屏蔽件的第一屏蔽提供交换各向异性，以便在所需方向上磁化所述第一屏蔽，并且相对于所述第一屏蔽设置在与所述MR膜相反的一侧上; 以及侧面屏蔽，其设置在MR膜的轨道宽度方向的两侧，并且包括与第一屏蔽件磁性连接的软磁性层。

8. 发明申请

US20120087045A1 THIN FILM MAGNETIC HEAD INCLUDING SPIN-VALVE FILM WITH FREE LAYER MAGNETICALLY CONNECTED WITH SHIELD 有权
标题翻译：薄膜磁头包括旋转阀膜，自由层磁性连接
公开(公告)号：US20120087045A1
公开(公告)日：2012-04-12
申请号：US12900845
申请日：2010-10-08
申请人： Takumi Yanagisawa , Yasushi Nishioka , Takahiko Machita , Satoshi Miura , Takayasu Kanaya , Kenzo Makino , Yoshikazu Sawada , Takekazu Yamane , Naomichi Degawa , Kosuke Tanaka , Soji Koide , Daisuke Miyauchi
发明人： Takumi Yanagisawa , Yasushi Nishioka , Takahiko Machita , Satoshi Miura , Takayasu Kanaya , Kenzo Makino , Yoshikazu Sawada , Takekazu Yamane , Naomichi Degawa , Kosuke Tanaka , Soji Koide , Daisuke Miyauchi
IPC分类号： G11B5/33 , G11B5/56 , G11B5/48
CPC分类号： G11B5/3912 , B82Y25/00 , G01R33/093 , H01F10/325 , H01F10/3254 , H01L43/08
摘要： A thin film magnetic head includes; an MR film that includes a pinned layer of which a magnetization direction is pinned, a free layer of which a magnetization direction varies, and a spacer that is disposed therebetween; a pair of shields that are disposed on both sides sandwiching the MR film in a direction orthogonal to a film surface of the MR film; and an anisotropy providing layer that provides anisotropy to a first shield so that the first shield is magnetized in a desired direction, and that is disposed on an opposite side from the MR film with respect to the first shield. The MR film includes a magnetic coupling layer that is disposed between the first shield and the free layer and that magnetically couples the first shield with the free layer.
摘要翻译：薄膜磁头包括：包括磁化方向被钉扎的钉扎层，磁化方向变化的自由层和设置在其间的间隔件的MR膜; 一对屏蔽，其设置在与MR膜的膜表面正交的方向上夹着MR膜的两侧; 以及各向异性提供层，其向第一屏蔽提供各向异性，使得第一屏蔽沿期望的方向被磁化，并且被设置在与MR膜相对于第一屏蔽的相对侧上。 MR膜包括设置在第一屏蔽和自由层之间并且将第一屏蔽与自由层磁耦合的磁耦合层。

9. 发明申请

US20130050867A1 MAGNETIC HEAD HAVING A CONTACT SENSOR 有权
标题翻译：具有接触传感器的磁头
公开(公告)号：US20130050867A1
公开(公告)日：2013-02-28
申请号：US13218150
申请日：2011-08-25
申请人： Takekazu YAMANE , Yosuke ANTOKU , Katsuki KURIHARA , Norio TAKAHASHI , Kenzo MAKINO
发明人： Takekazu YAMANE , Yosuke ANTOKU , Katsuki KURIHARA , Norio TAKAHASHI , Kenzo MAKINO
IPC分类号： G11B5/127 , G11B21/02 , G11B5/48 , G11B5/02
CPC分类号： G11B5/6076 , G11B5/3133 , G11B5/3136 , G11B5/3146 , G11B5/607
摘要： A magnetic head includes a medium facing surface that faces a surface of a recording medium, a write head section, a contact sensor that detects contact of the medium facing surface with the surface of the recording medium, and a heat sink adjacent to the contact sensor. The write head section has a magnetic pole that produces a write magnetic field for writing data on the recording medium. The contact sensor and the heat sink have respective end faces located in the medium facing surface. The contact sensor varies in resistance in response to temperature variations, and is to be energized. The heat sink includes an intermediate layer made of a nonmagnetic metal material, and two ferromagnetic layers made of a metal-based magnetic material, the two ferromagnetic layers being disposed with the intermediate layer therebetween, and being antiferromagnetically exchange-coupled to each other via the intermediate layer.
摘要翻译：磁头包括面向记录介质的表面的介质面向表面，写入头部分，检测介质面向表面与记录介质表面的接触的接触传感器以及与接触传感器相邻的散热器。写头部分具有产生用于在记录介质上写入数据的写入磁场的磁极。接触传感器和散热器具有位于介质面对表面中的相应端面。接触传感器响应于温度变化而变化，并且被通电。散热器包括由非磁性金属材料制成的中间层和由金属基磁性材料制成的两个铁磁层，所述两个铁磁层在其间具有中间层，并经由该铁磁材料彼此反铁磁交换耦合中间层。

10. 发明授权

US08542456B2 Magnetic head having a contact sensor 有权
标题翻译：具有接触传感器的磁头
公开(公告)号：US08542456B2
公开(公告)日：2013-09-24
申请号：US13218150
申请日：2011-08-25
申请人： Takekazu Yamane , Yosuke Antoku , Katsuki Kurihara , Norio Takahashi , Kenzo Makino
发明人： Takekazu Yamane , Yosuke Antoku , Katsuki Kurihara , Norio Takahashi , Kenzo Makino
IPC分类号： G11B5/127 , G11B21/02 , G11B5/48 , G11B5/02
CPC分类号： G11B5/6076 , G11B5/3133 , G11B5/3136 , G11B5/3146 , G11B5/607
摘要： A magnetic head includes a medium facing surface that faces a surface of a recording medium, a write head section, a contact sensor that detects contact of the medium facing surface with the surface of the recording medium, and a heat sink adjacent to the contact sensor. The write head section has a magnetic pole that produces a write magnetic field for writing data on the recording medium. The contact sensor and the heat sink have respective end faces located in the medium facing surface. The contact sensor varies in resistance in response to temperature variations, and is to be energized. The heat sink includes an intermediate layer made of a nonmagnetic metal material, and two ferromagnetic layers made of a metal-based magnetic material, the two ferromagnetic layers being disposed with the intermediate layer therebetween, and being antiferromagnetically exchange-coupled to each other via the intermediate layer.
摘要翻译：磁头包括面向记录介质的表面的介质面向表面，写入头部分，检测介质面向表面与记录介质表面的接触的接触传感器以及与接触传感器相邻的散热器。写头部分具有产生用于在记录介质上写入数据的写入磁场的磁极。接触传感器和散热器具有位于介质面对表面中的相应端面。接触传感器响应于温度变化而变化，并且被通电。散热器包括由非磁性金属材料制成的中间层和由金属基磁性材料制成的两个铁磁层，所述两个铁磁层在其间具有中间层，并经由该铁磁材料彼此反铁磁交换耦合中间层。

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