公开(公告)号：US20060061914A1

公开(公告)日：2006-03-23

申请号：US11267186

申请日：2005-11-07

Applicant: Hiroyuki Hoshiya ,  Susumu Soeya ,  Kenichi Meguro

Inventor： Hiroyuki Hoshiya ,  Susumu Soeya ,  Kenichi Meguro

IPC: G11B5/33 ,  G11B5/127

CPC classification number: H01L43/10 ,  B82Y10/00 ,  B82Y25/00 ,  G01R33/093 ,  G11B5/3903 ,  G11B2005/3996 ,  H01F10/1936 ,  H01F10/324 ,  H01F10/3254 ,  H01F10/3272 ,  H01F10/3295

Abstract: No related magnetoresistive multi-layered films made from a metal magnetic film provide sufficient reproducing output power. A high-polarized layer with a thickness of 10 nm or less is formed as a Fe-rich Fe—O layer in contact with the interface of a non-magnetic intermediate layer and the resulting layers are heat treated to form a multi-layered film of ferromagnetic Fe—O layers, achieving a magnetoresistive element having high magnetoresistance.

公开(公告)号：US06947316B2

公开(公告)日：2005-09-20

申请号：US10755285

申请日：2004-01-13

Applicant: Hiromasa Takahashi ,  Reiko Arai ,  Susumu Soeya

Inventor： Hiromasa Takahashi ,  Reiko Arai ,  Susumu Soeya

IPC: G01R33/09 ,  G11B5/127 ,  G11B5/33 ,  G11B5/39 ,  H01L43/08 ,  G11C11/00

CPC classification number: B82Y25/00 ,  B82Y10/00 ,  G01R33/09 ,  G11B5/3903 ,  G11B5/3909 ,  G11B5/3932 ,  G11B5/3967 ,  G11B2005/3996

Abstract: There are provided a magnetoresistive sensor of the type of flowing a signal sensing current perpendicular to the plane to improve resolution at reproducing a signal, a magnetic head using the magnetoresistive sensor, and a magnetic disk apparatus.A magnetoresistive sensor comprising a substrate, a pair of magnetic shield layers consisting of a lower magnetic shield layer and an upper magnetic shield layer, a magnetoresistive sensor layer, disposed between the pair of magnetic shield layers, an electrode terminal for flowing a signal current perpendicular to the plane of the magnetoresistive sensor layer, and magnetic domain control layers for controlling Barkhausen noise of the magnetoresistive sensor layer, wherein the magnetic domain control layers disposed in contact with opposite ends of the magnetoresistive sensor layer consist of a material having high electric resistivity and with a specific resistance not less than 10 mΩcm so as to give the magnetoresistive sensor having excellent reproducing resolution. The sensor is used to provide a magnetic head having excellent reproducing resolution and a magnetic disk apparatus.

Abstract translation: 提供了一种磁阻传感器，其类型是使垂直于该平面的信号感测电流流动，以改善在再现信号时的分辨率，使用磁阻传感器的磁头和磁盘装置。 一种磁阻传感器，包括基板，由下磁屏蔽层和上磁屏蔽层组成的一对磁屏蔽层，设置在一对磁屏蔽层之间的磁阻传感器层，用于垂直于信号电流流动的电极端子 磁阻传感器层的平面和用于控制磁阻传感器层的巴克豪森噪声的磁畴控制层，其中与磁阻传感器层的相对端接触设置的磁畴控制层由具有高电阻率的材料组成， 具有不小于10mOggacm的电阻率，以使具有优异再现分辨率的磁阻传感器。 传感器用于提供具有优异的再现分辨率的磁头和磁盘装置。

公开(公告)号：US06728080B2

公开(公告)日：2004-04-27

申请号：US09808992

申请日：2001-03-16

Applicant: Kenchi Ito ,  Susumu Soeya

Inventor： Kenchi Ito ,  Susumu Soeya

IPC: G11B533

CPC classification number: G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/00 ,  G11B5/127 ,  G11B5/245 ,  G11B5/2452 ,  G11B5/3113 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/33 ,  G11B5/39 ,  G11B5/3919 ,  G11B13/045 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/0008 ,  G11B2005/0021 ,  G11B2005/3996

Abstract: A magnetic reproducing head and a magnetic recording head. The magnetic reproducing head includes a GMR or TMR magnetic sensor, and a flux guide for introducing a magnetic flux into the magnetic sensor. At least a portion of the flux guide includes a material which is capable of permitting the magnetic flux to pass therethrough at a temperature not lower than a predetermined temperature Tp, but not permitting the magnetic flux to pass therethrough at a temperature lower than Tp. Light is irradiated to only a portion of the flux guide to cause the temperature of the irradiated portion to rise up to Tp or more, thereby permitting a magnetic flux to pass only through the irradiated portion, thus narrowing the track width of magnetic reproducing head when detecting recorded information from the magnetic recording medium.

Abstract translation: 磁记录头和磁记录头。 磁再现头包括GMR或TMR磁传感器，以及用于将磁通量引入到磁传感器中的磁通引导件。 磁通引导件的至少一部分包括能够允许磁通在不低于预定温度Tp的温度下通过但不允许磁通在低于Tp的温度下通过的材料。 光只照射到磁通引导件的一部分，使照射部分的温度上升到Tp以上，从而允许磁通仅通过照射部分，从而使磁性再现头的磁道宽度变窄， 检测来自磁记录介质的记录信息。

公开(公告)号：US5668685A

公开(公告)日：1997-09-16

申请号：US351562

申请日：1994-12-07

Applicant: Susumu Soeya ,  Shigeru Tadokoro ,  Takao Imagawa ,  Eiji Ashida ,  Moriaki Fuyama ,  Hiroshi Fukui ,  Saburo Suzuki ,  Masayuki Takagi ,  Shinji Narishige

Inventor： Susumu Soeya ,  Shigeru Tadokoro ,  Takao Imagawa ,  Eiji Ashida ,  Moriaki Fuyama ,  Hiroshi Fukui ,  Saburo Suzuki ,  Masayuki Takagi ,  Shinji Narishige

IPC: G11B5/02 ,  G11B5/133 ,  G11B5/31 ,  G11B5/39 ,  G11B5/127

CPC classification number: G11B5/3903 ,  G11B5/3929 ,  G11B5/399 ,  G11B5/1274 ,  G11B5/133 ,  G11B5/3163

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5436777A

公开(公告)日：1995-07-25

申请号：US941248

申请日：1992-09-04

Applicant: Susumu Soeya ,  Shigeru Tadokoro ,  Takao Imagawa ,  Eiji Ashida ,  Moriaki Fuyama ,  Shinji Narishige ,  Kouichi Nishioka

Inventor： Susumu Soeya ,  Shigeru Tadokoro ,  Takao Imagawa ,  Eiji Ashida ,  Moriaki Fuyama ,  Shinji Narishige ,  Kouichi Nishioka

IPC: G11B5/00 ,  G11B5/012 ,  G11B5/31 ,  G11B5/39

CPC classification number: G11B5/3932 ,  G11B5/012 ,  G11B5/3903 ,  G11B5/398 ,  G11B5/399 ,  G11B2005/0016 ,  G11B5/3113 ,  G11B5/313

Abstract: 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).

Abstract translation: 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。