公开(公告)号：US5933297A

公开(公告)日：1999-08-03

申请号：US45189

申请日：1993-04-13

申请人： Hiroyuki Hoshiya ,  Katsuya Mitsuoka ,  Masaaki Sano ,  Reiko Arai ,  Susumu Soeya ,  Hiroshi Fukui ,  Moriaki Fuyama ,  Fumio Sato

发明人： Hiroyuki Hoshiya ,  Katsuya Mitsuoka ,  Masaaki Sano ,  Reiko Arai ,  Susumu Soeya ,  Hiroshi Fukui ,  Moriaki Fuyama ,  Fumio Sato

IPC分类号： G11B5/012 ,  G11B5/09 ,  G11B5/39 ,  G11B5/48 ,  H01F10/06

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/09 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3919 ,  G11B5/3967 ,  G11B5/398 ,  G11B5/4886 ,  G11B2005/3996

摘要： A magnetic storage/read system includes a recording medium for magnetically storing a signal and a magnetoresistive element which is driven relative to the recording medium. The magnetoresistive element may include a substrate, a first antiferromagnetic film, a first ferromagnetic film, a first nonmagnetic film, a soft magnetic film, a second nonmagnetic film, a second ferromagnetic film, and a second antiferromagnetic film, wherein the films are sequentially layered directly on the substrate with no intervening layer between any of the films. At least one of the first antiferromagnetic film and the second antiferromagnetic film may be made of nickel oxide. The first ferromagnetic film and the second ferromagnetic film have a first magnetization which is fixed in a predetermined direction, and the soft magnetic film has a second magnetization which is rotatable in response to a magnetic field from the recording medium such that an angle between a direction of the second magnetization and the predetermined direction in which the first magnetization is fixed varies in response to the magnetic field from the recording medium, thereby producing a magnetoresistive effect.

摘要翻译： 磁存储/读取系统包括用于磁存储信号的记录介质和相对于记录介质驱动的磁阻元件。 磁阻元件可以包括基板，第一反铁磁膜，第一铁磁膜，第一非磁性膜，软磁膜，第二非磁性膜，第二铁磁膜和第二反铁磁膜，其中膜依次层叠 直接在衬底上，在任何膜之间没有中间层。 第一反铁磁膜和第二反铁磁膜中的至少一个可以由氧化镍制成。 第一铁磁膜和第二铁磁膜具有沿预定方向固定的第一磁化，并且软磁膜具有可响应于来自记录介质的磁场而旋转的第二磁化，使得在方向 第二磁化和第一磁化固定的预定方向响应于来自记录介质的磁场而变化，由此产生磁阻效应。

公开(公告)号：US06633465B2

公开(公告)日：2003-10-14

申请号：US09840869

申请日：2001-04-25

申请人： Hiroyuki Hoshiya ,  Katsuya Mitsuoka ,  Masaaki Sano ,  Reiko Arai ,  Susumu Soeya ,  Hiroshi Fukui ,  Moriaki Fuyama ,  Fumio Sato

发明人： Hiroyuki Hoshiya ,  Katsuya Mitsuoka ,  Masaaki Sano ,  Reiko Arai ,  Susumu Soeya ,  Hiroshi Fukui ,  Moriaki Fuyama ,  Fumio Sato

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/09 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3919 ,  G11B5/3967 ,  G11B5/398 ,  G11B5/4886 ,  G11B2005/3996

摘要： A magnetoresistive element includes a first antiferromagnetic film, a first magnetic film having a magnetization direction fixed by magnetic coupling with the first antiferromagnetic film, a second antiferromagnetic film, a second magnetic film having a magnetization direction fixed by magnetic coupling with the second antiferromagnetic film, a third magnetic film having a magnetization direction able to rotate in response to an applied magnetic field, a first nonmagnetic film disposed between the first magnetic film and the third magnetic film, and a second nonmagnetic film disposed between the second magnetic film and the third magnetic film. The third magnetic film is disposed between the first nonmagnetic film and the second nonmagnetic film, the first magnetic film is disposed between the first antiferromagnetic film and the first nonmagnetic film, and the second magnetic film is disposed between the second antiferromagnetic film and the second nonmagnetic film.

摘要翻译： 磁阻元件包括第一反铁磁膜，具有通过与第一反铁磁膜的磁耦合固定的磁化方向的第一磁性膜，第二反铁磁膜，具有通过与第二反铁磁性膜耦合而固定的磁化方向的第二磁性膜， 具有响应于施加的磁场而能够旋转的磁化方向的第三磁性膜，设置在第一磁性膜和第三磁性膜之间的第一非磁性膜和设置在第二磁性膜和第三磁性膜之间的第二非磁性膜 电影。 第三磁性膜设置在第一非磁性膜和第二非磁性膜之间，第一磁性膜设置在第一反铁磁膜和第一非磁性膜之间，第二磁性膜设置在第二反铁磁膜和第二非磁性膜之间 电影。

公开(公告)号：US06249405B1

公开(公告)日：2001-06-19

申请号：US09588183

申请日：2000-06-07

申请人： Hiroyuki Hoshiya ,  Katsuya Mitsuoka ,  Masaaki Sano ,  Reiko Arai ,  Susumu Soeya ,  Hiroshi Fukui ,  Moriaki Fuyama ,  Fumio Sato

发明人： Hiroyuki Hoshiya ,  Katsuya Mitsuoka ,  Masaaki Sano ,  Reiko Arai ,  Susumu Soeya ,  Hiroshi Fukui ,  Moriaki Fuyama ,  Fumio Sato

IPC分类号： G11B539

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/09 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3919 ,  G11B5/3967 ,  G11B5/398 ,  G11B5/4886 ,  G11B2005/3996

摘要： A magnetic storage/read system includes a recording medium having tracks, and a magnetic head, including a magnetoresistive element, which reads a magnetic field from the recording medium. The magnetic storage/read system satisfies a relationship of d≦(12.5×103)/Tr where d is a height, expressed in &mgr;m, of the magnetoresistive element in a direction perpendicular to a plane of the recording medium, and Tr is a track density, expressed in tracks per inch, of the tracks of the recording medium. The magnetoresistive element may include a first antiferromagnetic film; a first magnetic film having a magnetization direction which is fixed by magnetic coupling with the first antiferromagnetic film; a second antiferromagnetic film; a second magnetic film having a magnetization direction which is fixed by magnetic coupling with the second antiferromagnetic film; a third magnetic film having a magnetization direction which is able to rotate in response to an applied magnetic field; a first nonmagnetic conductive film disposed between the first magnetic film and the third magnetic film; and a second nonmagnetic conductive film disposed between the second magnetic film and the third magnetic film; wherein the third magnetic film is disposed between the first nonmagnetic conductive film and the second nonmagnetic conductive film, the first magnetic film is disposed between the first antiferromagnetic film and the first nonmagnetic conductive film, and the second magnetic film is disposed between the second antiferromagnetic film and the second nonmagnetic conductive film.

摘要翻译： 磁存储/读取系统包括具有轨道的记录介质和包括磁阻元件的磁头，其从记录介质读取磁场。 磁存储/读取系统满足d <=（12.5×103）/ Tr的关系，其中d是在垂直于记录介质的平面的方向上的磁阻元件以mum表示的高度，Tr是轨道 密度，以每英寸的轨道表示的记录介质的轨道。 磁阻元件可以包括第一反铁磁膜; 具有通过与第一反铁磁膜的磁耦合固定的磁化方向的第一磁性膜; 第二反铁磁膜; 具有通过与第二反铁磁膜的磁耦合固定的磁化方向的第二磁性膜; 具有能够响应于所施加的磁场而能够旋转的磁化方向的第三磁性膜; 设置在第一磁性膜和第三磁性膜之间的第一非磁性导电膜; 以及设置在所述第二磁性膜和所述第三磁性膜之间的第二非磁性导电膜; 其中所述第三磁性膜设置在所述第一非磁性导电膜和所述第二非磁性导电膜之间，所述第一磁性膜设置在所述第一反铁磁性膜与所述第一非磁性导电膜之间，所述第二磁性膜设置在所述第二反铁磁性膜 和第二非磁性导电膜。

公开(公告)号：US6125019A

公开(公告)日：2000-09-26

申请号：US366595

申请日：1999-08-03

申请人： Hiroyuki Hoshiya ,  Katsuya Mitsuoka ,  Masaaki Sano ,  Reiko Arai ,  Susumu Soeya ,  Hiroshi Fukui ,  Moriaki Fuyama ,  Fumio Sato

发明人： Hiroyuki Hoshiya ,  Katsuya Mitsuoka ,  Masaaki Sano ,  Reiko Arai ,  Susumu Soeya ,  Hiroshi Fukui ,  Moriaki Fuyama ,  Fumio Sato

IPC分类号： G11B5/012 ,  G11B5/09 ,  G11B5/39 ,  G11B5/48 ,  H01F10/06

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/09 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3919 ,  G11B5/3967 ,  G11B5/398 ,  G11B5/4886 ,  G11B2005/3996

摘要： A magnetic head includes a magnetoresistive element. The magnetoresistive element includes a first magnetic film having a fixed magnetization direction, a second magnetic film having a fixed magnetization direction, a third magnetic film having a rotatable magnetization direction, a first nonmagnetic film, and a second nonmagnetic film. The first magnetic film, the first nonmagnetic film, the third magnetic film, the second nonmagnetic film, and the second magnetic film are stacked in this order.

摘要翻译： 磁头包括磁阻元件。 磁阻元件包括具有固定磁化方向的第一磁性膜，具有固定磁化方向的第二磁性膜，具有可旋转磁化方向的第三磁性膜，第一非磁性膜和第二非磁性膜。 第一磁性膜，第一非磁性膜，第三磁性膜，第二非磁性膜和第二磁性膜按此顺序堆叠。

公开(公告)号：US5590008A

公开(公告)日：1996-12-31

申请号：US324380

申请日：1994-10-17

申请人： Masanori Tanabe ,  Hiroshi Fukui ,  Tadayuki Iwakura ,  Kazuhiro Nakamoto ,  Moriaki Fuyama ,  Katsuya Mitsuoka ,  Masaaki Sano ,  Makoto Saito ,  Makoto Aihara ,  Shuji Sudo

发明人： Masanori Tanabe ,  Hiroshi Fukui ,  Tadayuki Iwakura ,  Kazuhiro Nakamoto ,  Moriaki Fuyama ,  Katsuya Mitsuoka ,  Masaaki Sano ,  Makoto Saito ,  Makoto Aihara ,  Shuji Sudo

IPC分类号： G11B5/012 ,  G11B5/31 ,  G11B5/147

CPC分类号： G11B5/3153 ,  G11B5/012 ,  G11B5/3109 ,  G11B5/3113 ,  G11B5/3116

摘要： A magnetic disc unit has a thin film magnetic head in which a lower magnetic core and an upper magnetic core form a magnetic circuit. The upper magnetic core is constructed by magnetic films having at least two layers. A saturation magnetic flux density of the inside magnetic film, of the magnetic films having at least two layers, facing a magnetic gap of the magnetic circuit is larger than that of the outside magnetic films of the upper magnetic core and the lower magnetic core.

摘要翻译： 磁盘单元具有薄膜磁头，其中下磁芯和上磁芯形成磁路。 上磁芯由具有至少两层的磁性膜构成。 具有面对磁路的磁隙的至少两层的磁性膜的内部磁性膜的饱和磁通密度大于上部磁芯和下部磁芯的外部磁性膜的饱和磁通密度。

公开(公告)号：US06034847A

公开(公告)日：2000-03-07

申请号：US992089

申请日：1997-12-17

申请人： Matahiro Komuro ,  Tomohiro Okada ,  Masaaki Sano ,  Moriaki Fuyama ,  Hiroshi Fukui ,  Katsumi Hoshino ,  Takashi Kawabe ,  Yohji Maruyama ,  Atsushi Nakamura ,  Miki Hara ,  Noboru Shimizu ,  Noboru Yoshida

发明人： Matahiro Komuro ,  Tomohiro Okada ,  Masaaki Sano ,  Moriaki Fuyama ,  Hiroshi Fukui ,  Katsumi Hoshino ,  Takashi Kawabe ,  Yohji Maruyama ,  Atsushi Nakamura ,  Miki Hara ,  Noboru Shimizu ,  Noboru Yoshida

IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/60 ,  G11B5/147

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/312 ,  G11B5/3967 ,  G11B5/6005 ,  G11B2005/3996

摘要： In order to prevent degradation of the recording performance during radio frequency recording, and to provide a thin film magnetic head and a recording reproducing sectional pattern magnetic head which has a magnetic pole width less than 2 .mu.m and an ultra high density magnetic storage apparatus of 10 Gb/ in.sup.2 grade, a recording head is provided in which a lower part magnetic film serves as a shielding film of a reproducing selection, a non magnetic gap film is formed during formation of the upper part magnetic film and the lower part magnetic film, one part of the lower part magnetic film or the upper part magnetic film has a higher resistivity of more than 80 .mu..OMEGA.cm than other parts, the upper part magnetic film is formed by flame galvanizing, and a gap section of the lower part magnetic film or the upper part magnetic film has a convex shape.

摘要翻译： 为了防止在射频记录期间的记录性能的劣化，并且提供具有小于2μm的磁极宽度的薄膜磁头和记录再现部分图形磁头和超高密度磁存储装置 10Gb / in2级，提供了一种记录头，其中下部磁性膜用作再现选择的屏蔽膜，在形成上部磁性膜和下部磁性膜期间形成非磁隙膜， 下部磁性膜或上部磁性膜的一部分比其他部分具有高于80μm欧米伽cm的电阻率，上部磁性膜通过火焰镀锌形成，下部磁性膜的间隙部分 或上部磁性膜具有凸形状。

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。

公开(公告)号：US06385009B2

公开(公告)日：2002-05-07

申请号：US09899215

申请日：2001-07-06

申请人： Masaaki Sano ,  Yoshiaki Kita ,  Shun-ichi Narumi ,  Takashi Kawabe ,  Moriaki Fuyama ,  Hisashi Takano ,  Hisano Yamamoto ,  Kenzo Masuda

发明人： Masaaki Sano ,  Yoshiaki Kita ,  Shun-ichi Narumi ,  Takashi Kawabe ,  Moriaki Fuyama ,  Hisashi Takano ,  Hisano Yamamoto ,  Kenzo Masuda

IPC分类号： G11B531

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3109 ,  G11B5/3163 ,  G11B5/3967 ,  G11B2005/3996 ,  H01F41/26

摘要： A thin film magnetic head having a first magnetic core, a second magnetic core formed on the first magnetic core, a coil disposed between the first magnetic core and second magnetic core, and a non-magnetic insulator body for separating the first magnetic core, second magnetic core and coil with respect to each other. At least one of the first magnetic core and the second magnetic core includes an electroplated thin film with an average crystal grain size smaller than 500 Å and the electroplated thin film is made of Ni—Fe alloy of which Ni is 38 to 60 wt % and Fe is 40 to 62 wt %.

摘要翻译： 一种薄膜磁头，具有第一磁芯，形成在第一磁芯上的第二磁芯，设置在第一磁芯和第二磁芯之间的线圈和用于分离第一磁芯的非磁性绝缘体，第二磁芯 磁芯和线圈相对于彼此。 第一磁芯和第二磁芯中的至少一个包括平均晶粒尺寸小于500的电镀薄膜，电镀薄膜由Ni为38〜60重量％的Ni-Fe合金构成， Fe为40〜62重量％。

公开(公告)号：US06262867B1

公开(公告)日：2001-07-17

申请号：US09626743

申请日：2000-07-26

申请人： Masaaki Sano ,  Yoshiaki Kita ,  Shun-ichi Narumi ,  Takashi Kawabe ,  Moriaki Fuyama ,  Hisashi Takano ,  Hisano Yamamoto ,  Kenzo Masuda

发明人： Masaaki Sano ,  Yoshiaki Kita ,  Shun-ichi Narumi ,  Takashi Kawabe ,  Moriaki Fuyama ,  Hisashi Takano ,  Hisano Yamamoto ,  Kenzo Masuda

IPC分类号： G11B531

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3109 ,  G11B5/3163 ,  G11B5/3967 ,  G11B2005/3996 ,  H01F41/26

摘要： A thin film magnetic head and a disk storage system having a magnetic disk and the thin film magnetic head provided on a floating type slider. The thin film magnetic head has an upper magnetic core and a lower magnetic core, wherein the upper magnetic core and the lower magnetic core are made of an electroplated thin film having sufficient average crystal grain size. The upper magnetic core is made of a Ni—Fe alloy having Ni of 38 to 60 wt % and Fe of 40 to 62 wt %, and the crystal grain size is smaller than 500 Å.

摘要翻译： 一种薄膜磁头和具有磁盘的磁盘存储系统和设置在浮动滑块上的薄膜磁头。 薄膜磁头具有上磁芯和下磁芯，其中上磁芯和下磁芯由具有足够的平均晶粒尺寸的电镀薄膜制成。 上磁芯由Ni为38〜60重量％，Fe为40〜62重量％，晶粒尺寸小于500的Ni-Fe合金构成。

公开(公告)号：US06490131B2

公开(公告)日：2002-12-03

申请号：US10118008

申请日：2002-04-09

申请人： Masaaki Sano ,  Yoshiaki Kita ,  Shun-ichi Narumi ,  Takashi Kawabe ,  Moriaki Fuyama ,  Hisashi Takano ,  Hisano Yamamoto ,  Kenzo Masuda

发明人： Masaaki Sano ,  Yoshiaki Kita ,  Shun-ichi Narumi ,  Takashi Kawabe ,  Moriaki Fuyama ,  Hisashi Takano ,  Hisano Yamamoto ,  Kenzo Masuda

IPC分类号： G11B531

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3109 ,  G11B5/3163 ,  G11B5/3967 ,  G11B2005/3996 ,  H01F41/26

摘要： A slider having a thin film magnetic head. The thin film magnetic head has an upper magnetic core, a lower magnetic core and a coil disposed between the upper magnetic core and the lower magnetic core. The upper magnetic core and the lower magnetic core is an electroplated thin film with an average crystal grain size smaller than 500 Å, and the electroplated thin film is made of Ni—Fe alloy of which Ni is 38 to 60 wt % and Fe is 40 to 62 wt %.

摘要翻译： 具有薄膜磁头的滑块。 薄膜磁头具有上磁芯，下磁芯和设置在上磁芯和下磁芯之间的线圈。 上磁芯和下磁芯是平均晶粒尺寸小于500的电镀薄膜，电镀薄膜由Ni为38〜60重量％，Fe为40的Ni-Fe合金构成 至62重量％。