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    Magneto-resistive devices
    1.
    发明授权
    Magneto-resistive devices 失效
    磁阻器件

    公开(公告)号：US06917088B2

    公开(公告)日：2005-07-12

    申请号：US10331664

    申请日：2002-12-31

    申请人： Hiromasa Takahashi ,  Jun Hayakawa ,  Susumu Soeya ,  Kenchi Ito

    发明人： Hiromasa Takahashi ,  Jun Hayakawa ,  Susumu Soeya ,  Kenchi Ito

    IPC分类号： G01R33/09 ,  G11B5/39 ,  G11C11/15 ,  H01F10/32 ,  H01L21/8246 ,  H01L27/105 ,  H01L27/14 ,  H01L29/82 ,  H01L29/84 ,  H01L43/08 ,  H01L43/10

    CPC分类号： G11B5/3903 ,  H01L27/228 ,  H01L43/08 ,  H01L43/10

    摘要： A magneto-resistive device has a high reproducing output and is suitable for use as a CPP-GMR device. The magneto-resistive device has a first magnetic layer, a second magnetic layer, and a non-magnetic spacer formed between the first and second magnetic layers. The first magnetic layer contains a magnetic material whose conduction electrons belong to a first energy band, and the second magnetic layer contains a magnetic material whose conduction electrons belong to a second energy band. The first and second energy bands are attributable to orbitals of the same kind, thereby increasing the ratio of change in magnetoresistance and adjusting the electric resistance.

    摘要翻译： 磁阻装置具有高的再现输出，并且适合用作CPP-GMR装置。 磁阻装置具有形成在第一和第二磁性层之间的第一磁性层，第二磁性层和非磁性间隔物。 第一磁性层包含导电电子属于第一能带的磁性材料，第二磁性层含有导电电子属于第二能带的磁性材料。 第一和第二能带可归因于相同轨道，从而增加磁阻变化率和调整电阻。

    Magnetic recording medium and hard disk drive using the same, and manufacturing method thereof
    4.
    发明申请
    Magnetic recording medium and hard disk drive using the same, and manufacturing method thereof 审中-公开
    磁记录介质和使用其的硬盘驱动器及其制造方法

    公开(公告)号：US20060153976A1

    公开(公告)日：2006-07-13

    申请号：US11374158

    申请日：2006-03-14

    申请人： Kenchi Ito ,  Susumu Soeya ,  Yuko Tsuchiya

    发明人： Kenchi Ito ,  Susumu Soeya ,  Yuko Tsuchiya

    IPC分类号： B05D5/12

    CPC分类号： H01F1/0063 ,  B82Y25/00 ,  G11B5/712 ,  G11B5/84 ,  H01F1/0054 ,  H01F10/007 ,  H01F10/123 ,  H01F41/0273 ,  H01F41/22

    摘要： A magnetic recording medium, a hard disk using the same, and a manufacturing method thereof are provided. In one example, the magnetic nano-particle medium is formed by depositing a magnetic nano-particle colloid on a substrate, wherein the axes of easy magnetization of respective crystalline particles are aligned with high accuracy. A layer of L10 alloy nano-particles which will exhibit magnetic properties through an order-disorder transition, and arranged at a substantially uniform spacing on a substrate, and a carbon-containing covering film for surrounding these nano-particles and making the spacing substantially uniform are provided. To the L10 alloy of the nano-particles, at least one non-magnetic element is added, or a covered layer comprising at least one non-magnetic layer is formed therearound. This makes it possible to implement a magnetic recording medium wherein the average diameter of nano-particles is small, and the nano-particle diameter dispersion is small, and the axes of magnetic anisotropy are aligned.

    摘要翻译： 提供磁记录介质，使用该记录介质的硬盘及其制造方法。 在一个实例中，磁性纳米颗粒介质通过在基底上沉积磁性纳米颗粒胶体形成，其中各个结晶颗粒的易磁化轴线以高精度对准。 一层L10合金纳米颗粒，其将通过有序 - 无序转变呈现磁性，并且在基底上以基本上均匀的间隔布置，并且用于包围这些纳米颗粒的含碳覆盖膜并使间距基本均匀 被提供。 对于纳米颗粒的L10合金，添加至少一种非磁性元件，或者在其周围形成包含至少一个非磁性层的被覆层。 这使得可以实现纳米颗粒的平均直径小，纳米粒径分散小，磁各向异性轴对准的磁记录介质。

    Magnetic head, magnetic recording and reproducing apparatus, method for reproducing and recording magnetic recording information
    5.
    发明授权
    Magnetic head, magnetic recording and reproducing apparatus, method for reproducing and recording magnetic recording information 失效
    磁头，磁记录和再现装置，用于再现和记录磁记录信息的方法

    公开(公告)号：US06728080B2

    公开(公告)日：2004-04-27

    申请号：US09808992

    申请日：2001-03-16

    申请人： Kenchi Ito ,  Susumu Soeya

    发明人： Kenchi Ito ,  Susumu Soeya

    IPC分类号： G11B533

    CPC分类号： 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

    摘要： 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.

    摘要翻译： 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。

    Magnetoresistive sensor including magnetic domain control layers having high electric resistivity
    8.
    发明授权
    Magnetoresistive sensor including magnetic domain control layers having high electric resistivity 失效
    磁阻传感器包括具有高电阻率的磁畴控制层

    公开(公告)号：US06870718B2

    公开(公告)日：2005-03-22

    申请号：US09811606

    申请日：2001-03-20

    申请人： Hiromasa Takahashi ,  Reiko Arai ,  Susumu Soeya

    发明人： Hiromasa Takahashi ,  Reiko Arai ,  Susumu Soeya

    IPC分类号： G01R33/09 ,  G11B5/127 ,  G11B5/33 ,  G11B5/39 ,  H01L43/08

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

    摘要： 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.

    摘要翻译： 一种磁阻传感器，其类型是使垂直于该平面的信号感应电流流动，以改善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。

    Magnetoresistive sensor including magnetic domain control layers having high electric resistivity, magnetic head and magnetic disk apparatus
    9.
    发明申请
    Magnetoresistive sensor including magnetic domain control layers having high electric resistivity, magnetic head and magnetic disk apparatus 失效
    磁阻传感器包括具有高电阻率的磁畴控制层，磁头和磁盘装置

    公开(公告)号：US20050254182A1

    公开(公告)日：2005-11-17

    申请号：US11188695

    申请日：2005-07-26

    申请人： Hiromasa Takahashi ,  Reiko Arai ,  Susumu Soeya

    发明人： Hiromasa Takahashi ,  Reiko Arai ,  Susumu Soeya

    IPC分类号： G01R33/09 ,  G11B5/127 ,  G11B5/33 ,  G11B5/39 ,  H01L43/08

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

    摘要： A magnetoresistive sensor of the type of flowing a signal sensing current perpendicular to the plane, a magnetic head using the magnetoresistive sensor, and a magnetic disk apparatus, 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, the magnetic domain control layers being 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.

    摘要翻译： 使垂直于该平面的信号感应电流的类型的磁阻传感器，使用磁阻传感器的磁头和包括基板的磁盘装置，由下磁屏蔽层和 上磁屏蔽层，磁阻传感器层，设置在一对磁屏蔽层之间，用于使垂直于磁阻传感器层的平面的信号电流流过的电极端子和用于控制磁阻传感器的巴克豪森噪声的磁畴控制层 层，与磁阻传感器层的相对端接触的磁畴控制层由具有高电阻率且电阻率不小于10mOggacm的材料组成。

    Magnetoresistive sensor including magnetic domain control layers having high electric resistivity, magnetic head and magnetic disk apparatus
    10.
    发明授权
    Magnetoresistive sensor including magnetic domain control layers having high electric resistivity, magnetic head and magnetic disk apparatus 失效
    磁阻传感器包括具有高电阻率的磁畴控制层，磁头和磁盘装置

    公开(公告)号：US07072155B2

    公开(公告)日：2006-07-04

    申请号：US11188695

    申请日：2005-07-26

    申请人： Hiromasa Takahashi ,  Reiko Arai ,  Susumu Soeya

    发明人： Hiromasa Takahashi ,  Reiko Arai ,  Susumu Soeya

    IPC分类号： G11B5/39

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

    摘要： A magnetoresistive sensor of the type of flowing a signal sensing current perpendicular to the plane, a magnetic head using the magnetoresistive sensor, and a magnetic disk apparatus, 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, the magnetic domain control layers being 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.

    摘要翻译： 使垂直于该平面的信号感应电流的类型的磁阻传感器，使用磁阻传感器的磁头和包括基板的磁盘装置，由下磁屏蔽层和 上磁屏蔽层，磁阻传感器层，设置在一对磁屏蔽层之间，用于使垂直于磁阻传感器层的平面的信号电流流过的电极端子和用于控制磁阻传感器的巴克豪森噪声的磁畴控制层 层，与磁阻传感器层的相对端接触的磁畴控制层由具有高电阻率且电阻率不小于10mOggacm的材料组成。