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1. 发明授权

US5436777A Magnetoresistive head 失效
标题翻译：磁阻头
公开(公告)号：US5436777A
公开(公告)日：1995-07-25
申请号：US941248
申请日：1992-09-04
申请人： Susumu Soeya , Shigeru Tadokoro , Takao Imagawa , Eiji Ashida , Moriaki Fuyama , Shinji Narishige , Kouichi Nishioka
发明人： Susumu Soeya , Shigeru Tadokoro , Takao Imagawa , Eiji Ashida , Moriaki Fuyama , Shinji Narishige , Kouichi Nishioka
IPC分类号： G11B5/00 , G11B5/012 , G11B5/31 , G11B5/39
CPC分类号： G11B5/3932 , G11B5/012 , G11B5/3903 , G11B5/398 , G11B5/399 , G11B2005/0016 , G11B5/3113 , G11B5/313
摘要： A magnetoresistive head has a substrate (1) and, on the substrate, a magnetoresistive film (40) for converting a magnetic signal into an electric signal by using magnetoresistance effects and a pair of electrodes (60) for causing a signal detection current to flow through the magnetoresistive film. A pair of first domain wall suppressing layers (30) are arranged at opposite end portions of the magnetoresistive film, respectively, to apply a longitudinal magnetic bias to the magnetoresistive film. A second domain wall suppressing layer (45) is also provided for applying a longitudinal magnetic bias, which is weaker compared with the longitudinal magnetic bias applied by the first domain wall suppressing layers, to the magnetoresistive film (40).
摘要翻译：磁阻头具有衬底（1），并且在衬底上具有用于通过使用磁阻效应将磁信号转换为电信号的磁阻膜（40）和用于使信号检测电流流动的一对电极（60）通过磁阻膜。一对第一畴壁抑制层（30）分别布置在磁阻膜的相对端部，以将纵向磁偏压施加到磁阻膜。还提供了第二畴壁抑制层（45），用于施加与由第一畴壁抑制层施加的纵向磁偏压相比较对磁阻膜（40）较弱的纵向磁偏压。

2. 发明授权

US5668685A Magnetic disc apparatus 失效
标题翻译：磁盘装置
公开(公告)号：US5668685A
公开(公告)日：1997-09-16
申请号：US351562
申请日：1994-12-07
申请人： Susumu Soeya , Shigeru Tadokoro , Takao Imagawa , Eiji Ashida , Moriaki Fuyama , Hiroshi Fukui , Saburo Suzuki , Masayuki Takagi , Shinji Narishige
发明人： Susumu Soeya , Shigeru Tadokoro , Takao Imagawa , Eiji Ashida , Moriaki Fuyama , Hiroshi Fukui , Saburo Suzuki , Masayuki Takagi , Shinji Narishige
IPC分类号： G11B5/02 , G11B5/133 , G11B5/31 , G11B5/39 , G11B5/127
CPC分类号： G11B5/3903 , G11B5/3929 , G11B5/399 , G11B5/1274 , G11B5/133 , G11B5/3163
摘要： A magnetic disc apparatus is disclosed, in which a magneto-resistance effect film converts a magnetic signal into an electrical signal by use of the magneto-resistance effect, a pair of electrodes supplies a signal detection current to the magneto-resistance effect film, and a magnetic domain control layer controls the magnetic domain of the magneto-resistance effect film. The magneto-resistance effect film, the electrodes and the magnetic domain control layer constitute a magnetic head of magneto-resistance effect type. An isolation film is formed in a magneto-sensitive portion of the magneto-resistance effect film between the magneto-resistance effect film and the magnetic domain control layer to break the magnetic coupling between the magneto-resistance effect film and the magnetic domain control layer.
摘要翻译：公开了一种磁盘装置，其中磁阻效应膜通过使用磁阻效应将磁信号转换成电信号，一对电极向磁阻效应膜提供信号检测电流，并且磁畴控制层控制磁阻效应膜的磁畴。磁阻效应膜，电极和磁畴控制层构成磁阻效应型的磁头。在磁阻效应膜和磁畴控制层之间的磁阻效应膜的磁敏部分中形成隔离膜，以破坏磁阻效应膜和磁畴控制层之间的磁耦合。

3. 发明授权

US5726838A Magnetic disc apparatus with head having magneto-resistance effect 失效
标题翻译：具有磁头效应的磁头磁盘装置
公开(公告)号：US5726838A
公开(公告)日：1998-03-10
申请号：US400457
申请日：1995-03-07
申请人： Susumu Soeya , Shigeru Tadokoro , Takao Imagawa , Akira Kumagai , Moriaki Fuyama , Shinji Narishige
发明人： Susumu Soeya , Shigeru Tadokoro , Takao Imagawa , Akira Kumagai , Moriaki Fuyama , Shinji Narishige
IPC分类号： G11B5/39 , G11B5/012 , G11B5/31
CPC分类号： G11B5/012 , G11B5/3113 , G11B5/3903 , G11B5/3929 , G11B5/3967 , G11B5/3163
摘要： A magnetic disc apparatus capable of noiseless, high-output reproduction is disclosed. A magnetic head including a magnetic domain control structure having an antiferromagnetic film for applying a longitudinally biasing magnetic field to a magneto-sensitive portion of a magneto-resistance effect film, and a magnetic film smaller in spontaneous magnetization than the magneto-resistance effect film, which magnetic film is interposed between the magneto-resistance effect film and the antiferromagnetic film. A magnetic disc apparatus is thus realized which is high in recording density and usable in stable manner within the operating temperature range.
摘要翻译：公开了一种能够进行无噪声，高输出再现的磁盘装置。一种包括具有用于向磁阻效应膜的磁敏部分施加纵向偏置磁场的反铁磁膜的磁畴控制结构的磁头和比磁阻效应膜小的自发磁化的磁性膜，该磁性膜介于磁阻效应膜和反铁磁膜之间。因此，实现了高记录密度并且在工作温度范围内可稳定使用的磁盘装置。

4. 发明授权

US4939610A Thin film magnetic head having magnetic core including a thin film of cobalt alloy 失效
标题翻译：具有包括钴合金薄膜的磁芯的薄膜磁头
公开(公告)号：US4939610A
公开(公告)日：1990-07-03
申请号：US252603
申请日：1988-10-03
申请人： Shinji Narishige , Masaaki Sano , Kouichi Nishioka , Takao Imagawa , Masanobu Hanazono , Tetsuo Kobayashi , Toshihiro Yoshida
发明人： Shinji Narishige , Masaaki Sano , Kouichi Nishioka , Takao Imagawa , Masanobu Hanazono , Tetsuo Kobayashi , Toshihiro Yoshida
IPC分类号： G11B5/31 , H01F41/18
CPC分类号： H01F41/18 , G11B5/31
摘要： A thin film magnetic head is disclosed which includes a substrate, a first magnetic core disposed on the substrate, a second magnetic core forming a magnetic path in conjunction with the first magnetic core, a conductor coil wound in the magnetic path and a gap formed between ends of the first magnetic core and the second magnetic core. At least one of the first magnetic core and the second magnetic core includes a thin film of a cobalt alloy. The cobalt alloy includes 20-70 atomic percent of cobalt, 20-60 atomic percent of nickel, 12-30 atomic percent of iron and 5-32 atomic percent of palladium.
摘要翻译：公开了一种薄膜磁头，其包括基板，设置在基板上的第一磁芯，与第一磁芯一起形成磁路的第二磁芯，缠绕在磁路中的导体线圈和形成在磁路之间的间隙第一磁芯和第二磁芯的端部。第一磁芯和第二磁芯中的至少一个包括钴合金薄膜。钴合金包括20-70原子％的钴，20-60原子％的镍，12-30原子％的铁和5-32原子百分比的钯。

5. 发明授权

US4943883A Quarternary amorphous magnetic alloy thin film and magnetic head including same 失效
标题翻译：四元非晶磁性合金薄膜和磁头包括相同的
公开(公告)号：US4943883A
公开(公告)日：1990-07-24
申请号：US266080
申请日：1988-11-02
申请人： Masaaki Sano , Takao Imagawa , Kouichi Nishioka , Shinji Narishige , Masanobu Hanazono , Takashi Onishi , Toshihiro Yoshida
发明人： Masaaki Sano , Takao Imagawa , Kouichi Nishioka , Shinji Narishige , Masanobu Hanazono , Takashi Onishi , Toshihiro Yoshida
IPC分类号： G11B5/31
CPC分类号： G11B5/3109
摘要： A thin film magnetic head provided with a first and a second thin film made of a magnetic material, disposed so as to form a closed magnetic circuit; and an intermediate film made of a non-magnetic material, disposed between the first and the second thin films so as to form a magnetic gap at a part of the magnetic circuit; wherein at least one of the first and the second thin films is made of a quaternary amorphous magnetic alloy, whose principal component is cobalt and which contains hafnium, tantalum and palladium.
摘要翻译：一种薄膜磁头，其设置有由磁性材料制成的第一和第二薄膜，被设置成形成闭合磁路; 以及由非磁性材料制成的中间膜，设置在第一和第二薄膜之间，以在磁路的一部分形成磁隙; 其中所述第一和第二薄膜中的至少一个薄膜由主要成分为钴并含有铪，钽和钯的四元非晶磁性合金制成。

6. 发明授权

US5214840A Thin film magnetic head and the method of fabricating the same 失效
标题翻译：薄膜磁头及其制造方法
公开(公告)号：US5214840A
公开(公告)日：1993-06-01
申请号：US550698
申请日：1990-07-10
申请人： Takao Imagawa , Masaaki Sano , Katsuya Mitsuoka , Kouichi Nishioka , Shinji Narishige , Tetsuo Kobayashi
发明人： Takao Imagawa , Masaaki Sano , Katsuya Mitsuoka , Kouichi Nishioka , Shinji Narishige , Tetsuo Kobayashi
IPC分类号： G11B5/31
CPC分类号： G11B5/3163 , G11B5/3113 , Y10T29/49034
摘要： A method of fabricating a thin film magnetic head including a bottom magnetic core formed on a substrate, a top magnetic core laminated through an insulation layer, with one end of the top and bottom magnetic cores being joined and another end forming a magnetic gap, and a conductor coil layer which winds around the joined section for a plurality of number of turns. At least one of the top and bottom magnetic cores has its magnetization easy axis oriented substantially orthogonal to the magnetic path direction of the magnetic head by the magnetic annealing process, so that the magnetic head has an increased output and an enhanced write ability.
摘要翻译：一种制造薄膜磁头的方法，该薄膜磁头包括形成在基板上的底部磁芯，通过绝缘层层压的顶部磁芯，顶部和底部磁芯的一端接合，另一端形成磁隙，导体线圈层绕着连接部分缠绕多个匝数。顶部和底部磁芯中的至少一个通过磁性退火处理使其磁化容易轴定向为基本上垂直于磁头的磁路方向，从而磁头具有增加的输出和增强的写入能力。

7. 发明授权

US5051856A Thin film magnetic head with mixed crystal structures 失效
标题翻译：具有混晶结构的薄膜磁头
公开(公告)号：US5051856A
公开(公告)日：1991-09-24
申请号：US420478
申请日：1989-10-12
申请人： Shinji Narishige , Katsuya Mitsuoka , Takao Imagawa , Kouichi Nishioka , Akira Kumagai , Masaaki Sano , Yutaka Sugita , Reiko Arai , Tetsuo Kobayashi , Toshihiro Yoshida , Yokuo Saitoh , Yoshikazu Tsuji , Masaaki Hayashi
发明人： Shinji Narishige , Katsuya Mitsuoka , Takao Imagawa , Kouichi Nishioka , Akira Kumagai , Masaaki Sano , Yutaka Sugita , Reiko Arai , Tetsuo Kobayashi , Toshihiro Yoshida , Yokuo Saitoh , Yoshikazu Tsuji , Masaaki Hayashi
IPC分类号： G11B5/31 , H01F10/32
CPC分类号： B82Y25/00 , G11B5/31 , H01F10/32
摘要： A thin film magnetic head has magnetic films, at least one of which is composed of a material containing major components of nickel and iron and one or more element from nitrogen, oxygen and carbon and has two of face-centered cubic system and body-centered tetragonal system, whereby thin film magnetic heads having a high permeability and low coercive force can be provided.
摘要翻译：薄膜磁头具有磁性膜，其中至少一个由含有镍和铁的主要成分的材料和来自氮，氧和碳的一种或多种元素组成，并且具有两个面心立方体系和以身体为中心可以提供具有高磁导率和低矫顽力的薄膜磁头。

8. 发明授权

US06275360B1 Read-write head 失效
标题翻译：读写头
公开(公告)号：US06275360B1
公开(公告)日：2001-08-14
申请号：US09159752
申请日：1998-09-24
申请人： Kazuhiro Nakamoto , Takashi Kawabe , Tetsuo Kobayashi , Shun-ichi Marumi , Shinji Narishige , Takao Imagawa
发明人： Kazuhiro Nakamoto , Takashi Kawabe , Tetsuo Kobayashi , Shun-ichi Marumi , Shinji Narishige , Takao Imagawa
IPC分类号： G11B539
CPC分类号： G11B5/3967 , G11B5/11 , G11B5/3109 , G11B5/3912
摘要： A read-write head is capable of suppressing fluctuation on a reproduced waveform caused by repetition of a writing and reading operation, and is capable suppressing noise appearing in the reproduced waveform just after a writing operation is carried out. The read-write head has an upper magnetic core, an upper shield also serving as an lower magnetic core, a lower shield and a magnetoresistive film arranged between the upper shield and the lower shield. The upper shield has a soft magnetic film having a magnitude of anisotropy field of 5 to 30 Oe, or is a multilayer film composed of a high saturation magnetic flux density film and a negative magneto-striction film. The lower shield has a soft magnetic film having a magnitude of anisotropy field of 5 to 30 Oe.
摘要翻译：读写头能够抑制由重复写入和读取操作引起的再现波形的波动，并且能够在刚刚执行写入操作之后抑制再现波形中出现的噪声。读写头具有上磁芯，也可用作下磁芯的上屏蔽，下屏蔽和布置在上屏蔽和下屏蔽之间的磁阻膜。上屏蔽具有各向异性磁场强度为5〜30Oe的软磁性膜，或者是由高饱和磁通密度膜和负磁致密膜构成的多层膜。下屏蔽具有各向异性磁场强度为5〜30Oe的软磁性膜。

9. 发明授权

US6157526A Magnetoresistive head and magnetic disk apparatus 失效
标题翻译：磁阻磁头和磁盘装置
公开(公告)号：US6157526A
公开(公告)日：2000-12-05
申请号：US450763
申请日：1999-11-30
申请人： Katsuro Watanabe , Takashi Kawabe , Shigeru Tadokoro , Hiroshi Kamio , Takao Imagawa
发明人： Katsuro Watanabe , Takashi Kawabe , Shigeru Tadokoro , Hiroshi Kamio , Takao Imagawa
IPC分类号： G11B5/012 , G11B5/39 , G11B5/55 , G11B5/596
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3932 , G11B2005/3996 , G11B5/012 , G11B5/5526 , G11B5/59683
摘要： A magnetoresistive head in which Barkhausen noise is substantially suppressed and a variation in reproduction is minimized, and a magnetic disk apparatus using the same magnetic head have been provided. The feature of the magnetic head and the magnetic disk apparatus of the invention resides in the provision of a longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either a ferromagnetic thin film having a body-centered cubic lattice crystal structure, or an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure.
摘要翻译：巴克豪森噪声基本上被抑制并且再现的变化最小化的磁阻头，并且已经提供了使用相同磁头的磁盘装置。本发明的磁头和磁盘装置的特征在于提供一种纵向偏置层，其包括形成在由具有体心立方晶格结构结构的铁磁薄膜制成的底层上的硬磁薄膜或具有体心立方晶格结构的非晶铁磁薄膜或反铁磁薄膜。

10. 发明授权

US6088196A Magnetoresistive head and manufacturing method therefor 失效
标题翻译：磁阻头及其制造方法
公开(公告)号：US6088196A
公开(公告)日：2000-07-11
申请号：US888524
申请日：1997-07-07
申请人： Shigeru Tadokoro , Katsuro Watanabe , Takao Imagawa , Yasunari Tajima
发明人： Shigeru Tadokoro , Katsuro Watanabe , Takao Imagawa , Yasunari Tajima
IPC分类号： G11B5/31 , G11B5/39
CPC分类号： G11B5/3932 , G11B5/3967
摘要： A magnetoresistive head comprising a magnetoresistive film having electric resistance varying with a magnetic field, a pair of electrodes for causing a current to flow into the magnetoresistive film, and a soft magnetic film for applying a transverse biasing field to the magnetoresistive film, the soft magnetic film containing at least one material of iron, cobalt, and nickel, and at least one compound of zirconium oxide, aluminum oxide, hafnium oxide, titanium oxide, beryllium oxide, magnesium oxide, a rare earth oxygen compound, zirconium nitride, hafnium nitride, aluminum nitride, titanium nitride, beryllium nitride, magnesium nitride, silicon nitride, and a rare earth nitrogen compound. The electric resistance of the soft magnetic film is raised by adding a compound thereto and current diverted from the magnetoresistive film to the soft magnetic film decreases, so that the reproducing voltage of the magnetoresistive head rises.
摘要翻译：磁阻头包括具有随磁场变化的电阻的磁阻膜，用于使电流流入磁阻膜的一对电极和用于向磁阻膜施加横向偏置场的软磁膜，软磁体含有至少一种铁，钴和镍的材料的膜，以及至少一种氧化锆，氧化铝，氧化铪，氧化钛，氧化铍，氧化镁，稀土氧化合物，氮化锆，氮化铪，氮化铝，氮化钛，氮化铍，氮化镁，氮化硅和稀土氮化合物。通过向其中添加化合物来提高软磁膜的电阻，并且从磁阻膜向软磁膜转移的电流减小，使得磁阻磁头的再现电压升高。

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