专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06400535B1 Magnetoresistive effect multi-layered structure and thin-film magnetic head with the magnetoresistive effect multi-layered structure 有权
标题翻译：磁阻效应多层结构和薄膜磁头具有磁阻效应多层结构
公开(公告)号：US06400535B1
公开(公告)日：2002-06-04
申请号：US09262314
申请日：1999-03-04
申请人： Koji Shimazawa , Tetsuro Sasaki , Manabu Ohta
发明人： Koji Shimazawa , Tetsuro Sasaki , Manabu Ohta
IPC分类号： G11B566
CPC分类号： G11B5/66 , Y10T428/1121
摘要： A MR multi-layered structure or a thin-film magnetic head with the MR multi-layered structure includes a non-magnetic electrically conductive material layer, first and second ferromagnetic material layer separated by the non-magnetic electrically conductive material layer, and an anti-ferromagnetic material layer formed adjacent to and in physical contact with one surface of the second ferromagnetic material layer, the one surface being in opposite side of the non-magnetic electrically conductive material layer. The second ferromagnetic material layer includes a first layer of a ferromagnetic material containing Co, and a second layer of a ferromagnetic material with a smaller magnetic anisotropy than that of Co.
摘要翻译：具有MR多层结构的MR多层结构或薄膜磁头包括非磁性导电材料层，由非磁性导电材料层分离的第一和第二铁磁材料层，所述铁磁材料层与所述第二铁磁材料层的一个表面相邻并物理接触地形成，所述一个表面位于所述非磁性导电材料层的相对侧。第二铁磁材料层包括含有Co的铁磁材料的第一层和比Co的磁各向异性小的铁磁材料的第二层

2. 发明授权

US06302970B1 Method for manufacturing thin-film magnetic head with spin valve magnetoresistive sensor 有权
标题翻译：用自旋阀磁阻传感器制造薄膜磁头的方法
公开(公告)号：US06302970B1
公开(公告)日：2001-10-16
申请号：US09215538
申请日：1998-12-18
申请人： Koji Shimazawa , Manabu Ohta , Tetsuro Sasaki
发明人： Koji Shimazawa , Manabu Ohta , Tetsuro Sasaki
IPC分类号： C21D104
CPC分类号： B82Y25/00 , B82Y10/00 , B82Y40/00 , G11B5/3163 , G11B5/3903 , G11B5/3967 , H01F41/304 , Y10T29/49034
摘要： A manufacturing method of a thin-film magnetic head with a spin valve effect MR read sensor includes a temperature-annealing step of firmly fixing the direction of the pinned magnetization in the spin valve effect MR sensor. The temperature-annealing step is executed by a plurality of times.
摘要翻译：具有自旋阀效应MR读取传感器的薄膜磁头的制造方法包括在自旋阀效应MR传感器中牢固地固定钉扎磁化方向的温度退火步骤。温度退火步骤多次执行。

3. 发明授权

US06478884B2 Method for manufacturing thin-film magnetic head with spin valve magnetoresistive sensor 有权
标题翻译：用自旋阀磁阻传感器制造薄膜磁头的方法
公开(公告)号：US06478884B2
公开(公告)日：2002-11-12
申请号：US09865718
申请日：2001-05-29
申请人： Koji Shimazawa , Manabu Ohta , Tetsuro Sasaki
发明人： Koji Shimazawa , Manabu Ohta , Tetsuro Sasaki
IPC分类号： C21D104
CPC分类号： B82Y25/00 , B82Y10/00 , B82Y40/00 , G11B5/3163 , G11B5/3903 , G11B5/3967 , H01F41/304 , Y10T29/49034
摘要： A manufacturing method of a thin-film magnetic head with a spin valve effect MR read sensor includes a temperature-annealing step of firmly fixing the direction of the pinned magnetization in the spin valve effect MR sensor. The temperature-annealing step is executed by a plurality of times.
摘要翻译：具有自旋阀效应MR读取传感器的薄膜磁头的制造方法包括在自旋阀效应MR传感器中牢固地固定钉扎磁化方向的温度退火步骤。温度退火步骤多次执行。

4. 发明授权

US06294911B1 Measurement method of magnetization direction of magnetoresistive effect devices and measurement apparatus based on the method of TDK corporation 有权
标题翻译：基于该方法的磁阻效应器件和测量装置的磁化方向的测量方法
公开(公告)号：US06294911B1
公开(公告)日：2001-09-25
申请号：US09263778
申请日：1999-03-05
申请人： Koji Shimazawa , Nozomu Hachisuka , Manabu Ohta , Tetsuro Sasaki , Satoru Araki
发明人： Koji Shimazawa , Nozomu Hachisuka , Manabu Ohta , Tetsuro Sasaki , Satoru Araki
IPC分类号： G01R3309
CPC分类号： B82Y25/00 , G01R33/093 , G11B5/455 , G11B2005/0016
摘要： A method of measuring magnetization direction of a MR device, includes a first step of obtaining both maximum electrical resistance values under positive and negative applied measurement magnetic fields onto the MR device biased by anti-ferromagnetic material, a second step of relatively rotating a basic axis of the MR device against a direction of the applied measurement magnetic field until both the maximum resistance values become comparatively the same, and a third step of obtaining a relative rotation angle between the basic axis of the MR device and the direction of the applied measurement magnetic field.
摘要翻译：一种测量MR器件的磁化方向的方法包括：在由反铁磁材料偏置的MR器件上的正和负施加的测量磁场下获得最大电阻值的第一步骤，相对旋转基本轴线的第二步骤的MR装置相对于所施加的测量磁场的方向，直到最大电阻值变得相对相同，并且获得MR装置的基本轴线与施加的测量磁体的方向之间的相对旋转角度的第三步骤领域。

5. 发明授权

US06406556B1 Method for manufacturing thin-film magnetic head with magnetoresistive effect multi-layered structure 失效
标题翻译：具有磁阻效应多层结构的薄膜磁头制造方法
公开(公告)号：US06406556B1
公开(公告)日：2002-06-18
申请号：US09272295
申请日：1999-03-19
申请人： Koji Shimazawa , Tetsuro Sasaki , Manabu Ohta
发明人： Koji Shimazawa , Tetsuro Sasaki , Manabu Ohta
IPC分类号： H01F1008
CPC分类号： B82Y25/00 , B82Y10/00 , B82Y40/00 , G11B5/3163 , G11B5/3903 , G11B5/3932 , G11B2005/3996 , H01F41/304
摘要： A manufacturing method of a thin-film magnetic head with a MR multi-layered structure using exchange coupling magnetic bias, has a step of forming the MR multi-layered structure, and a step of providing the exchange coupling magnetic bias to the MR multi-layered structure by a temperature-annealing process. The temperature-annealing process includes a step of gradually decreasing the temperature of the multi-layered structure to a first predetermined temperature under application of magnetic field toward a predetermined direction.
摘要翻译：使用交换耦合磁偏置的具有MR多层结构的薄膜磁头的制造方法具有形成MR多层结构的步骤，以及向MR多层结构提供交换耦合磁偏置的步骤，层状结构通过温度退火处理。温度退火处理包括在朝向规定方向施加磁场的状态下将多层结构的温度逐渐降低到第一规定温度的步骤。

6. 发明授权

US08085038B2 Method for testing noise of thin-film magnetic head, and magnetic disk drive apparatus with noise testing function 有权
标题翻译：用于测试薄膜磁头噪声的方法和具有噪声测试功能的磁盘驱动装置
公开(公告)号：US08085038B2
公开(公告)日：2011-12-27
申请号：US11753836
申请日：2007-05-25
申请人： Takumi Uesugi , Takeo Kagami , Tetsuro Sasaki , Kei Hirata , Masaru Hirose , Chi Man Lee , Kwok Piu Tso
发明人： Takumi Uesugi , Takeo Kagami , Tetsuro Sasaki , Kei Hirata , Masaru Hirose , Chi Man Lee , Kwok Piu Tso
IPC分类号： G01R33/12 , G11B5/00
CPC分类号： G11B5/455 , G11B5/3189 , G11B5/3903
摘要： A noise-testing method for a thin-film magnetic head with an MR read head element and a heating unit capable of applying a heat and a stress to the MR read head element, includes a step of applying alternately and discontinuously with each other an electrical power having a first level and an electrical power having a second level higher than the first level to the heating unit, and a step of evaluating the thin-film magnetic head by measuring a noise output or noise outputs obtained from the MR read head element when the electrical power or the electrical powers are applied to the heating unit.
摘要翻译：具有MR读取头元件的薄膜磁头和能够向MR读取头元件施加热和应力的加热单元的噪声测试方法包括以下步骤：交替地和不连续地施加电气具有第一电平的功率和具有比加热单元的第一电平高的第二电平的电力;以及通过测量从MR读取头元件获得的噪声输出或噪声输出来评估薄膜磁头的步骤，电力或电力被施加到加热单元。

7. 发明授权

US06319544B1 Manufacturing method of magnetoresistive effect sensor and manufacturing method of magnetic head with the sensor 失效
标题翻译：磁阻效应传感器的制造方法和磁头与传感器的制造方法
公开(公告)号：US06319544B1
公开(公告)日：2001-11-20
申请号：US09472837
申请日：1999-12-28
申请人： Tetsuro Sasaki , Hiroaki Kawashima
发明人： Tetsuro Sasaki , Hiroaki Kawashima
IPC分类号： B05D512
CPC分类号： B82Y25/00 , B82Y10/00 , B82Y40/00 , G11B5/3163 , G11B5/3903 , G11B2005/3996 , H01F10/123 , H01F10/3268 , H01F41/308
摘要： A method of manufacturing a MR sensor having at least an anti-ferromagnetic layer and a ferromagnetic layer, and to a method for manufacturing a magnetic head with the MR sensor. The sensor utilizes bias magnetic field provided by exchange coupling between the anti-ferromagnetic layer and the ferromagnetic layer. The sensor manufacturing method includes a step of depositing an anti-ferromagnetic layer to have a larger thickness than a target thickness, a step of ordering the deposited anti-ferromagnetic layer, and a step of thinning the ordered anti-ferromagnetic layer to have the target thickness.
摘要翻译：一种制造具有至少一个反铁磁层和一个铁磁层的MR传感器的方法，以及一种用MR传感器制造磁头的方法。传感器利用由反铁磁层和铁磁层之间的交换耦合提供的偏磁场。传感器制造方法包括沉积具有比目标厚度更大的厚度的反铁磁层的步骤，排列沉积的反铁磁层的步骤，以及使有序反铁磁层变薄以使靶材具有目标的步骤厚度。

8. 发明授权

US07864489B2 Thin-film magnetic head having an antistatic layer preventing a protective coat from being electrostatically charged 有权
标题翻译：具有防静电层的防静电层的薄膜磁头被防静电
公开(公告)号：US07864489B2
公开(公告)日：2011-01-04
申请号：US11678913
申请日：2007-02-26
申请人： Kei Hirata , Takeo Kagami , Takumi Uesugi , Tetsuro Sasaki
发明人： Kei Hirata , Takeo Kagami , Takumi Uesugi , Tetsuro Sasaki
IPC分类号： G11B5/33
CPC分类号： G11B5/3106 , G11B5/3929 , G11B5/40
摘要： Provided is a thin-film magnetic head in which a noise due to the voltage potential difference between the read head element and the protective coat surface is suppressed. The thin-film magnetic head comprises: a read head element, one end surface of the read head element reaching an head end surface on the ABS side; a protective coat formed on the head end surface in such a way to cover at least the one end surface of the read head element; and at least one antistatic means for preventing the protective coat from being electrostatically charged, formed on/above the element formation surface, one end surface of the at least one antistatic means reaching the head end surface, the protective coat covering a portion, not the whole, of the one end surface of the at least one antistatic means on the head end surface.
摘要翻译：提供了一种薄膜磁头，其中抑制了读头元件和保护涂层表面之间的电压电位差引起的噪声。薄膜磁头包括：读头元件，读头元件的一个端面到达ABS侧的头端面; 形成在头端表面上的保护涂层，以至少覆盖读头元件的一个端面; 以及至少一个抗静电装置，用于防止保护涂层被静电充电，形成在元件形成表面上或上方，至少一个抗静电装置的一个端面到达头端表面，保护涂层覆盖一部分，而不是在头端表面上的至少一个抗静电装置的一个端面的整体。

9. 发明申请

US20080204938A1 Thin-Film Magnetic Head Having Antistatic Means for Protective Coat of Element End 有权
标题翻译：具有防止元件端部防护装置的薄膜磁头
公开(公告)号：US20080204938A1
公开(公告)日：2008-08-28
申请号：US11678913
申请日：2007-02-26
申请人： Kei Hirata , Takeo Kagami , Takumi Uesugi , Tetsuro Sasaki
发明人： Kei Hirata , Takeo Kagami , Takumi Uesugi , Tetsuro Sasaki
IPC分类号： G11B5/48
CPC分类号： G11B5/3106 , G11B5/3929 , G11B5/40
摘要： Provided is a thin-film magnetic head in which a noise due to the voltage potential difference between the read head element and the protective coat surface is suppressed. The thin-film magnetic head comprises: a read head element, one end surface of the read head element reaching an head end surface on the ABS side; a protective coat formed on the head end surface in such a way to cover at least the one end surface of the read head element; and at least one antistatic means for preventing the protective coat from being electrostatically charged, formed on/above the element formation surface, one end surface of the at least one antistatic means reaching the head end surface, the protective coat covering a portion, not the whole, of the one end surface of the at least one antistatic means on the head end surface.
摘要翻译：提供了一种薄膜磁头，其中抑制了读头元件和保护涂层表面之间的电压电位差引起的噪声。薄膜磁头包括：读头元件，读头元件的一个端面到达ABS侧的头端面; 形成在头端表面上的保护涂层，以至少覆盖读头元件的一个端面; 以及至少一个抗静电装置，用于防止保护涂层被静电充电，形成在元件形成表面上或上方，至少一个抗静电装置的一个端面到达头端表面，保护涂层覆盖一部分，而不是在头端表面上的至少一个抗静电装置的一个端面的整体。

10. 发明授权

US6093444A Magnetoresistive transducer with spin-valve structure and manufacturing method of the same 失效
标题翻译：具有自旋阀结构的磁阻传感器及其制造方法相同
公开(公告)号：US6093444A
公开(公告)日：2000-07-25
申请号：US998695
申请日：1997-12-29
申请人： Daisuke Miyauchi , Tetsuro Sasaki , Eiichi Omata
发明人： Daisuke Miyauchi , Tetsuro Sasaki , Eiichi Omata
IPC分类号： G01R33/09 , G11B5/31 , G11B5/39 , H01F41/30 , G11B5/66
CPC分类号： B82Y25/00 , B82Y10/00 , B82Y40/00 , G01R33/093 , G11B5/39 , G11B5/3903 , H01F41/302 , G11B2005/3996 , G11B5/3163
摘要： A MR transducer with a spin-valve structure formed on a substrate. The spin-valve structure has at least an antiferromagnetic material layer made of a NiMn alloy, a first ferromagnetic material layer, a nonmagnetic material layer and a second ferromagnetic material layer sequentially deposited on the substrate in this order.
摘要翻译：具有形成在基板上的自旋阀结构的MR换能器。自旋阀结构至少具有由NiMn合金制成的反铁磁材料层，第一铁磁材料层，非磁性材料层和第二铁磁材料层，其顺序地沉积在基板上。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式