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1. 发明授权

US06198597B1 Thin-film magnetic head having improved magnetic pole structure 有权
标题翻译：具有改善的磁极结构的薄膜磁头
公开(公告)号：US06198597B1
公开(公告)日：2001-03-06
申请号：US09153858
申请日：1998-09-16
申请人： Kohichi Tateyama , Hiroaki Yoda , Atsuhito Sawabe , Naoyuki Inoue , Akio Hori , Tadahiko Kobayashi , Hiromi Sakata , Michiko Hara , Takasi Koizumi , Tomohiko Nagata , Takeo Sakakubo , Kei Sakoda
发明人： Kohichi Tateyama , Hiroaki Yoda , Atsuhito Sawabe , Naoyuki Inoue , Akio Hori , Tadahiko Kobayashi , Hiromi Sakata , Michiko Hara , Takasi Koizumi , Tomohiko Nagata , Takeo Sakakubo , Kei Sakoda
IPC分类号： G11B531
CPC分类号： G11B5/3113 , G11B5/3116 , G11B5/3163
摘要： A thin-film magnetic head comprises a magnetic gap disposed to be positioned on an air bearing surface of the magnetic head, a pair of magnetic poles disposed to hold the magnetic gap therebetween, and a coil positioned between the pair of the magnetic poles to intersect the magnetic poles, wherein at least one of the magnetic poles being composed of a T-shaped magnetic pole, the T-shaped magnetic pole comprising a front part of a magnetic pole contacting with the magnetic gap, an intermediate part of a magnetic pole lying on the front part, and a rear part of a magnetic pole lying on the intermediate part, wherein a width of the front part roughly defines a track width, the rear part has a wider width in a direction of track width than a width of the front part, and the intermediate part contacts with the rear part at an entire width of the rear part at the air bearing surface and has a narrower width at a contacting face with the front part than the width of the rear part.
摘要翻译：薄膜磁头包括设置在磁头的空气轴承表面上的磁隙，设置成保持磁隙的一对磁极和位于一对磁极之间的线圈，以相交磁极，其中至少一个磁极由T形磁极组成，T形磁极包括与磁隙接触的磁极的前部，位于磁极的中间部分在前部的前部和位于中间部的磁极的后部，前部的宽度大致限定轨道宽度，后部在轨道宽度方向上的宽度比宽度宽前部，并且中间部分在后部的空气轴承表面的整个宽度处与后部接触，并且在与前部的接触面处具有比后部的宽度更窄的宽度。

2. 发明授权

US06751846B2 Magnetic head manufacturing method 失效
标题翻译：磁头制造方法
公开(公告)号：US06751846B2
公开(公告)日：2004-06-22
申请号：US10401869
申请日：2003-03-31
申请人： Susumu Hashimoto , Michiko Hara , Tomohiko Nagata , Kohichi Tateyama , Masatoshi Yoshikawa , Takeo Sakakubo , Hiroaki Yoda , Akio Hori , Takashi Koizumi
发明人： Susumu Hashimoto , Michiko Hara , Tomohiko Nagata , Kohichi Tateyama , Masatoshi Yoshikawa , Takeo Sakakubo , Hiroaki Yoda , Akio Hori , Takashi Koizumi
IPC分类号： G11B5127
CPC分类号： G11B5/313 , G11B5/3116 , G11B5/3163 , G11B5/3967 , Y10T29/49044
摘要： A method for manufacturing a magnetic head which includes a lower write pole having a projection, an upper write pole having a projection opposed to the projection of the lower write pole, and a magnetic gap interposed between the projection of the upper write pole and the projection of the lower write pole, comprising: a first step of making the magnetic gap on the projection of the lower write pole; a second step of making a non-magnetic material layer on the lower write pole, the non-magnetic material layer having a projection on its top surface in positional alignment with the projection of the lower write pole; a third step of making a mask layer on the non-magnetic material layer, the mask layer having an opening in which the top surface of the projection of the non-magnetic material layer is exposed; a fourth step of making a curved recess in the non-magnetic material layer by isotropically etching the non-magnetic material layer through the opening of the mask layer; a fifth step of making an approximately tapered recess down from the bottom of the curved recess by anisotropically etching the non-magnetic material layer through the opening of the mask layer; and a sixth step of making the upper write pole by burying a magnetic material in the tapered recess and the curved recess is provided.
摘要翻译：一种用于制造磁头的方法，该磁头包括具有突出部的下部写入极，具有与下部写入磁极的突起相对的突出部的上部写入磁极，以及插入在上部写入磁极和突起之间的磁隙包括：使下部写入极的投影上的磁隙形成的第一步骤; 在下写入磁极上制作非磁性材料层的第二步骤，非磁性材料层在其顶表面上具有与下写入磁极的突起位置对准的突起; 在非磁性材料层上形成掩模层的第三步骤，所述掩模层具有露出所述非磁性材料层的突起的顶表面的开口; 通过所述掩模层的开口对所述非磁性材料层进行各向同性蚀刻来制造所述非磁性材料层中的弯曲凹部的第四工序; 第五步骤，通过通过掩模层的开口各向异性蚀刻非磁性材料层，从弯曲凹槽的底部向下形成大致锥形的凹陷; 并且提供通过将磁性材料埋入锥形凹部和弯曲凹部中来制造上部写入极的第六步骤。

3. 发明授权

US06564445B1 Magnetic head manufacturing method 有权
公开(公告)号：US06564445B1
公开(公告)日：2003-05-20
申请号：US09536743
申请日：2000-03-28
申请人： Susumu Hashimoto , Michiko Hara , Tomohiko Nagata , Kohichi Tateyama , Masatoshi Yoshikawa , Takeo Sakakubo , Hiroaki Yoda , Akio Hori , Takashi Koizumi
发明人： Susumu Hashimoto , Michiko Hara , Tomohiko Nagata , Kohichi Tateyama , Masatoshi Yoshikawa , Takeo Sakakubo , Hiroaki Yoda , Akio Hori , Takashi Koizumi
IPC分类号： G11B5127
CPC分类号： G11B5/313 , G11B5/3116 , G11B5/3163 , G11B5/3967 , Y10T29/49044
摘要： A method for manufacturing a magnetic head which includes a lower write pole having a projection, an upper write pole having a projection opposed to the projection of the lower write pole, and a magnetic gap interposed between the projection of the upper write pole and the projection of the upper write pole, comprising: a first step of making the magnetic gap on the projection of the lower write pole; a second step of making a non-magnetic material layer on the lower write pole, the non-magnetic material layer having a projection on its top surface in positional alignment with the projection of the lower write pole; a third step of making a mask layer on the non-magnetic material layer, the mask layer having an opening in which the top surface of the projection of the non-magnetic material layer is exposed; a fourth step of making a curved recess in the non-magnetic material layer by isotropically etching the non-magnetic material layer through the opening of the mask layer; a fifth step of making an approximately tapered recess down from the bottom of the curved recess by anisotropically etching the non-magnetic material layer through the opening of the mask layer; and a sixth step of making the upper write pole by burying a magnetic material in the tapered recess and the curved recess is provided.

4. 发明授权

US5912790A Thin film magnetic recording-reproducing head having a high recording density and high fidelity 失效
标题翻译：具有高记录密度和高保真度的薄膜磁记录再现头
公开(公告)号：US5912790A
公开(公告)日：1999-06-15
申请号：US818110
申请日：1997-03-13
申请人： Hiroaki Yoda , Akio Hori , Michiko Hara , Naoyuki Inoue , Yuichi Ohsawa , Susumu Hashimoto , Takeo Sakakubo , Norio Ozawa , Teruo Sasho
发明人： Hiroaki Yoda , Akio Hori , Michiko Hara , Naoyuki Inoue , Yuichi Ohsawa , Susumu Hashimoto , Takeo Sakakubo , Norio Ozawa , Teruo Sasho
IPC分类号： G11B5/31 , G11B5/39 , G11B5/127 , G11B5/187
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3103 , G11B5/3116 , G11B5/313 , G11B5/3163 , G11B5/3967 , G11B2005/3996
摘要： A composite magnetic head includes a recording head and a reproducing head. The recording head may be formed below or above the reproducing head. The lower of the recording and reproducing heads includes a first electrode. In addition, a conductive layer acting as a pole structure for the recording head includes a portion defining a hole through which a second electrode is made to contact the first electrode.
摘要翻译：复合磁头包括记录头和再现头。记录头可以形成在再现头的下方或上方。记录和再现头的下部包括第一电极。此外，作为记录头的极结构的导电层包括限定使第二电极与第一电极接触的孔的部分。

5. 发明授权

US07071522B2 Magnetoresistance effect element, magnetic head and magnetic reproducing apparatus 失效
公开(公告)号：US07071522B2
公开(公告)日：2006-07-04
申请号：US10887080
申请日：2004-07-09
申请人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koui , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
发明人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koui , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
IPC分类号： H01L29/82 , H01L43/00
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/00 , G11B5/3903 , G11B2005/3996 , H01F10/30 , H01F10/3227 , H01F10/3272 , H01F10/3295 , H01L43/08 , H01L43/10
摘要： In a spin valve type element, an interface insertion layer (32, 34) of a material exhibiting large spin-dependent interface scattering is inserted in a location of a magnetically pinned layer (16) or a magnetically free layer (20) closer to a nonmagnetic intermediate layer (18). A nonmagnetic back layer (36) may be additionally inserted as an interface not in contact with the nonmagnetic intermediate layer to increase the output by making use of spin-dependent interface scattering along the interface between the pinned layer and the nonmagnetic back layer or between the free layer and the nonmagnetic back layer.

6. 发明授权

US07443004B2 Magnetoresistance effect element, magnetic head and magnetic reproducing apparatus 有权
标题翻译：磁阻效应元件，磁头和磁再现装置
公开(公告)号：US07443004B2
公开(公告)日：2008-10-28
申请号：US11283873
申请日：2005-11-22
申请人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koui , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
发明人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koui , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
IPC分类号： H01L29/82
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/00 , G11B5/3903 , G11B2005/3996 , H01F10/30 , H01F10/3227 , H01F10/3272 , H01F10/3295 , H01L43/08 , H01L43/10
摘要： In a spin valve type element, an interface insertion layer (32, 34) of a material exhibiting large spin-dependent interface scattering is inserted in a location of a magnetically pinned layer (16) or a magnetically free layer (20) closer to a nonmagnetic intermediate layer (18). A nonmagnetic back layer (36) may be additionally inserted as an interface not in contact with the nonmagnetic intermediate layer to increase the output by making use of spin-dependent interface scattering along the interface between the pinned layer and the nonmagnetic back layer or between the free layer and the nonmagnetic back layer.
摘要翻译：在自旋阀型元件中，将表现出大的自旋相关界面散射的材料的界面插入层（32,34）插入到更靠近磁性固定层（16）或磁性层（20）的位置非磁性中间层（18）。可以另外插入非磁性背层（36）作为不与非磁性中间层接触的界面，以通过利用沿被钉扎层和非磁性背层之间的界面处的自旋相关界面散射来增加输出，自由层和非磁背层。

7. 发明申请

US20090034134A1 MAGNETORESISTANCE EFFECT ELEMENT, MAGNETIC HEAD AND MAGNETIC REPRODUCING APPARATUS 有权
标题翻译：磁阻效应元件，磁头和磁性再生装置
公开(公告)号：US20090034134A1
公开(公告)日：2009-02-05
申请号：US12236331
申请日：2008-09-23
申请人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koul , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
发明人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koul , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
IPC分类号： G11B5/33
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/00 , G11B5/3903 , G11B2005/3996 , H01F10/30 , H01F10/3227 , H01F10/3272 , H01F10/3295 , H01L43/08 , H01L43/10
摘要： A magnetoresistance effect element includes a magnetoresistance effect film including a magnetically pinned layer having a magnetic material film whose direction of magnetization is pinned substantially in one direction, a magnetically free layer having a magnetic material film whose direction of magnetization changes in response to an external magnetic field, and a nonmagnetic metal intermediate layer located between said pinned layer and said free layer. The element also includes a pair of electrodes electrically connected to the magnetoresistance effect film to supply a sense current perpendicularly to a film plane of the magnetoresistance effect film. At least one of the pinned layer and the free layer may include a thin-film insertion layer. The nonmagnetic metal intermediate layer includes a resistance adjusting layer including at least one of oxides, nitrides and fluorides, and the thin-film insertion layer includes at least one element selected from the group consisting of iron (Fe), cobalt (Co) and nickel (Ni).
摘要翻译：磁阻效应元件包括磁阻效应膜，该磁阻效应膜包括具有磁性材料膜的磁性被钉扎层，该磁性材料膜的磁化方向基本上被固定在一个方向上;磁性层，具有响应于外部磁性的磁化方向变化的磁性材料膜以及位于所述被钉扎层和所述自由层之间的非磁性金属中间层。该元件还包括电连接到磁阻效应膜的一对电极，以提供垂直于磁阻效应膜的膜平面的感测电流。被钉扎层和自由层中的至少一个可以包括薄膜插入层。非磁性金属中间层包括电阻调节层，其包含氧化物，氮化物和氟化物中的至少一种，薄膜插入层包括选自铁（Fe），钴（Co）和镍中的至少一种元素（Ni）。

8. 发明授权

US08085511B2 Magnetoresistance effect element having resistance adjusting layer and thin-film insertion layer 有权
标题翻译：具有电阻调节层和薄膜插入层的磁阻效应元件
公开(公告)号：US08085511B2
公开(公告)日：2011-12-27
申请号：US12236331
申请日：2008-09-23
申请人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koui , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
发明人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koui , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
IPC分类号： G11B5/39 , H01L29/82
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/00 , G11B5/3903 , G11B2005/3996 , H01F10/30 , H01F10/3227 , H01F10/3272 , H01F10/3295 , H01L43/08 , H01L43/10
摘要： A magnetoresistance effect element includes a magnetoresistance effect film including a magnetically pinned layer having a magnetic material film whose direction of magnetization is pinned substantially in one direction, a magnetically free layer having a magnetic material film whose direction of magnetization changes in response to an external magnetic field, and a nonmagnetic metal intermediate layer located between said pinned layer and said free layer. The element also includes a pair of electrodes electrically connected to the magnetoresistance effect film to supply a sense current perpendicularly to a film plane of the magnetoresistance effect film. At least one of the pinned layer and the free layer may include a thin-film insertion layer. The nonmagnetic metal intermediate layer includes a resistance adjusting layer including at least one of oxides, nitrides and fluorides, and the thin-film insertion layer includes at least one element selected from the group consisting of iron (Fe), cobalt (Co) and nickel (Ni).
摘要翻译：磁阻效应元件包括磁阻效应膜，该磁阻效应膜包括具有磁性材料膜的磁性被钉扎层，该磁性材料膜的磁化方向基本上被固定在一个方向上;磁性层，具有响应于外部磁性的磁化方向变化的磁性材料膜以及位于所述被钉扎层和所述自由层之间的非磁性金属中间层。元件还包括电连接到磁阻效应膜的一对电极，以提供垂直于磁阻效应膜的膜平面的感测电流。被钉扎层和自由层中的至少一个可以包括薄膜插入层。非磁性金属中间层包括电阻调节层，其包含氧化物，氮化物和氟化物中的至少一种，薄膜插入层包括选自铁（Fe），钴（Co）和镍中的至少一种元素（Ni）。

9. 发明申请

US20060071287A1 Magnetoresistance effect element, magnetic head and magnetic reproducing apparatus 有权
标题翻译：磁阻效应元件，磁头和磁再现装置
公开(公告)号：US20060071287A1
公开(公告)日：2006-04-06
申请号：US11283873
申请日：2005-11-22
申请人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koui , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
发明人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koui , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
IPC分类号： H01L43/00
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/00 , G11B5/3903 , G11B2005/3996 , H01F10/30 , H01F10/3227 , H01F10/3272 , H01F10/3295 , H01L43/08 , H01L43/10
摘要： In a spin valve type element, an interface insertion layer (32, 34) of a material exhibiting large spin-dependent interface scattering is inserted in a location of a magnetically pinned layer (16) or a magnetically free layer (20) closer to a nonmagnetic intermediate layer (18). A nonmagnetic back layer (36) may be additionally inserted as an interface not in contact with the nonmagnetic intermediate layer to increase the output by making use of spin-dependent interface scattering along the interface between the pinned layer and the nonmagnetic back layer or between the free layer and the nonmagnetic back layer.
摘要翻译：在自旋阀型元件中，将表现出大的自旋相关界面散射的材料的界面插入层（32,34）插入到更靠近磁性固定层（16）或磁性层（20）的位置非磁性中间层（18）。可以另外插入非磁性背层（36）作为不与非磁性中间层接触的界面，以通过利用沿被钉扎层和非磁性背层之间的界面处的自旋相关界面散射来增加输出，自由层和非磁背层。

10. 发明授权

US06784509B2 Magnetoresistance effect element, magnetic head and magnetic reproducing apparatus 有权
标题翻译：磁阻效应元件，磁头和磁再现装置
公开(公告)号：US06784509B2
公开(公告)日：2004-08-31
申请号：US10217410
申请日：2002-08-14
申请人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koui , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
发明人： Hiromi Yuasa , Yuzo Kamiguchi , Masatoshi Yoshikawa , Katsuhiko Koui , Hitoshi Iwasaki , Tomohiko Nagata , Takeo Sakakubo , Masashi Sahashi
IPC分类号： H01L2982
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/00 , G11B5/3903 , G11B2005/3996 , H01F10/30 , H01F10/3227 , H01F10/3272 , H01F10/3295 , H01L43/08 , H01L43/10
摘要： In a spin valve type element, an interface insertion layer (32, 34) of a material exhibiting large spin-dependent interface scattering is inserted in a location of a magnetically pinned layer (16) or a magnetically free layer (20) closer to a nonmagnetic intermediate layer (18). A nonmagnetic back layer (36) may be additionally inserted as an interface not in contact with the nonmagnetic intermediate layer to increase the output by making use of spin-dependent interface scattering along the interface between the pinned layer and the nonmagnetic back layer or between the free layer and the nonmagnetic back layer.
摘要翻译：在自旋阀型元件中，将表现出大的自旋相关界面散射的材料的界面插入层（32,34）插入到更靠近磁性固定层（16）或磁性层（20）的位置非磁性中间层（18）。可以另外插入非磁性背层（36）作为不与非磁性中间层接触的界面，以通过利用沿被钉扎层和非磁性背层之间的界面处的自旋相关界面散射来增加输出，自由层和非磁背层。

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