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41. 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。

42. 发明授权

US06603643B2 Magnetoresistive head containing oxide layer 失效
公开(公告)号：US06603643B2
公开(公告)日：2003-08-05
申请号：US09970642
申请日：2001-10-05
申请人： Hiroyuki Hoshiya , Kenichi Meguro , Takao Imagawa
发明人： Hiroyuki Hoshiya , Kenichi Meguro , Takao Imagawa
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B2005/3996
摘要： An oxide layer and an antiparallel coupling layer are inserted into a ferromagnetic pinned layer to be subjected to heat treatment with appropriate ferromagnetic film thickness and magnetization field to form a spin-valve film, which is controlled in amount of magnetization and is high in magnetoresistance.

43. 发明授权

US06319622B1 Magnetic head 有权
标题翻译：磁头
公开(公告)号：US06319622B1
公开(公告)日：2001-11-20
申请号：US09633170
申请日：2000-08-04
申请人： Satoshi Shigematsu , Takao Imagawa , Koichi Nishioka , Hiroshi Kamio , Katsuhisa Usami
发明人： Satoshi Shigematsu , Takao Imagawa , Koichi Nishioka , Hiroshi Kamio , Katsuhisa Usami
IPC分类号： G11B566
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3903 , G11B2005/3996 , Y10S428/90 , Y10T428/1121 , Y10T428/115 , Y10T428/1193
摘要： Magnetoresistive and spin valve heads have a layered structure. Common to each of the layered structures of these heads is the combination of a soft-magnetic layer of essentially NiFe near a spacer layer of essentially Ta, which is used for insuring (111) crystal orientation of the NiFe layer. An isolate layer is interposed between the spacer layer and the soft-magnetic layer to prevent a diffusion boundary from being created at the interface of these layers which tends to degrade the soft-magnetic property of the NiFe layer, especially when the thickness of the soft-magnetic layer is 10 and nm or less. The isolate layer is one of a composition in which the principal component is a magnetic element that is not solid soluble with Ta, a composition in which the principal component is a non-magnetic element that is not solid soluble with Ni and Fe, a composition in which the principal component is at least one of the elements of Co, Fe, Ti, V, Zr, Nb, Mo, Hf, W, Tc, Ru, Rh, Pd, Ag, Re, Os, Ir, Pt and Au; or a composition in which the principal component is of Co(100−X)Fe(X), where 20≧X>O. The isolate layer has a structure that is amorphous, an fcc structure.
摘要翻译：磁阻和旋转阀头具有分层结构。这些磁头的每个层状结构的共同之处在于用于确保NiFe层的（111）晶体取向的基本上Ta的间隔层附近的基本上NiFe的软磁性层的组合。在间隔层和软磁性层之间插入隔离层，以防止在这些层的界面处产生扩散边界，这倾向于降低NiFe层的软磁特性，特别是当软质的厚度磁性层为10nm以下。隔离层是其中主要成分是与Ta不固溶的磁性元素的组合物之一，其中主要成分是不与Ni和Fe固溶的非磁性元素的组成，组成其中主要成分是Co，Fe，Ti，V，Zr，Nb，Mo，Hf，W，Tc，Ru，Rh，Pd，Ag，Re，Os，Ir，Pt和Au中的至少一种元素 ; 或其中主成分为Co（100-X）Fe（X）的组合物，其中20> = X> O。隔离层具有无定形，fcc结构的结构。

44. 发明授权

US06172859B2 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：US06172859B2
公开(公告)日：2001-01-09
申请号：US08683978
申请日：1996-07-22
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： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/012 , G11B5/3903 , G11B5/3932 , G11B5/5526 , G11B5/59683 , G11B2005/3996
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 the longitudinal bias layer which comprises a hard magnetic thin film formed on an underlayer made of either of a ferromagnetic thin film having a body-centered cubic lattice crystal structure formed of body-centered cells, an amorphous ferromagnetic thin film or antiferromagnetic thin film having a body-centered cubic lattice crystal structure formed of body-centered cells.
摘要翻译：巴克豪森噪声基本上被抑制并且再现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纵向偏置层，其包括形成在由具有体心立方晶格晶体的铁磁性薄膜制成的底层上的硬磁薄膜以身体为中心的细胞构成的结构，由身体中心细胞形成的体心立方晶格结构的非晶铁磁性薄膜或反铁磁性薄膜。

45. 发明授权

US5969910A Magnetic head and magnetic disk apparatus provided therewith 失效
标题翻译：磁头和磁盘装置
公开(公告)号：US5969910A
公开(公告)日：1999-10-19
申请号：US858240
申请日：1997-05-19
申请人： Takao Imagawa , Shigeru Tadokoro , Yasunari Tajima , Hiroshi Kamio
发明人： Takao Imagawa , Shigeru Tadokoro , Yasunari Tajima , Hiroshi Kamio
IPC分类号： G11B5/31 , G11B5/39 , G11B5/127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3143 , G11B5/3903 , G11B5/3967 , G11B2005/3996 , Y10T428/1107
摘要： A magnetic head having a magnetoresistive head having a spin valve structure in which a composite magnetic layer of a rotatable magnetizing direction layer and oxide or the like is used for a lower shielding layer and/or an upper shielding layer and a magnetic disk apparatus using such a head are disclosed. According to the invention, a magnetic head having a head of a magnetoresistance effect type generating a high output with low noises and a magnetic disk apparatus having a large quantity with high recording density can be realized.
摘要翻译：一种磁头，具有具有自旋阀结构的磁阻头，其中可旋转磁化方向层和氧化物等的复合磁性层用于下屏蔽层和/或上屏蔽层，以及使用这种磁屏蔽装置的磁盘装置公开了一个头。根据本发明，可以实现具有产生具有低噪声的高输出的磁阻效应类型的磁头和具有高记录密度的大量磁盘装置的磁头。

46. 发明授权

US5872690A Magnetic transducer and magnetic recording device utilizing material in which undirectional anisotropy can be formed 失效
标题翻译：磁性传感器和磁记录装置利用可以形成不定向各向异性的材料
公开(公告)号：US5872690A
公开(公告)日：1999-02-16
申请号：US893676
申请日：1997-07-11
申请人： Shigeru Tadokoro , Takao Imagawa , Katsuro Watanabe , Akira Kumagai
发明人： Shigeru Tadokoro , Takao Imagawa , Katsuro Watanabe , Akira Kumagai
IPC分类号： G01R33/09 , C22C27/06 , G11B5/31 , G11B5/39 , H01F10/08 , H01F10/32 , H01L43/08
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , H01F10/3218 , G11B2005/3996 , G11B5/3932
摘要： A magnetic laminated film used for a magnetic transducer is constructed in such a way that a ferromagnetic film as a ferromagnetic body is made of, for example, a Ni--Fe alloy film, formed on a substrate made of, for example, glass, and an antiferromagnetic film as an antiferromagnetic body having crystal structure of body-centered cubic lattice, for example, made of a Cr alloy film is laminated on the top layer. Further, a magnetic transducer using the magnetic laminated film is applied to a magnetic head in a magnetic recording device in accordance with the present invention.
摘要翻译：用于磁换能器的磁性层压膜以这样的方式构成，使得作为铁磁体的铁磁膜由例如由例如玻璃制成的基板上形成的例如Ni-Fe合金膜制成，以及具有例如由Cr合金膜制成的体心立方晶格的晶体结构的反铁磁体层叠在顶层上。此外，根据本发明，使用磁性层压膜的磁性换能器被施加到磁记录装置中的磁头上。

47. 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。

48. 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。

49. 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。

50. 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。

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