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    Magnetic recording head and disk device with the same
    3.
    发明授权
    Magnetic recording head and disk device with the same 有权
    磁记录头和磁盘设备相同

    公开(公告)号：US09183855B2

    公开(公告)日：2015-11-10

    申请号：US14332988

    申请日：2014-07-16

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Tomoko Taguchi

    IPC: G11B5/31 ,  G11B5/35 ,  G11B5/17 ,  G11B5/11

    CPC classification number: G11B5/35 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/17 ,  G11B5/3146 ,  G11B2005/0024

    Abstract: A magnetic recording head includes a main magnetic pole that generates a recording magnetic field in a direction perpendicular to a recording layer, a write shield with a surface that faces a trailing side of the main magnetic pole, so that a write gap is interposed between the surface and the main magnetic pole, the write shield forming a magnetic core together with the main magnetic pole, a recording coil, a high frequency oscillator within the write gap, a wiring through which a current can flow through the main magnetic pole, the high frequency oscillator, and the write shield in series, and a magnetic element made of soft magnetic material, positioned within the write gap and separated from the high frequency oscillator, and configured to form a magnetic path passing through the main magnetic pole, the magnetic element, and the write shield, and not through the high frequency oscillator.

    Abstract translation: 磁记录头包括在与记录层垂直的方向上产生记录磁场的主磁极，具有面向主磁极的后侧的表面的写入屏蔽，使得写间隙介于 表面和主磁极，写屏蔽与主磁极一起形成磁芯，记录线圈，写间隙内的高频振荡器，电流可以通过主磁极流过的布线，高 频率振荡器和写入屏蔽串联，以及由软磁材料制成的磁性元件，位于写入间隙内并与高频振荡器分离，并且构造成形成通过主磁极的磁路，磁性元件 和写屏蔽，而不是通过高频振荡器。

    MAGNETIC RECORDING HEAD AND DISK DRIVE INCLUDING THE SAME
    4.
    发明申请
    MAGNETIC RECORDING HEAD AND DISK DRIVE INCLUDING THE SAME 有权
    磁记录头和磁盘驱动器，包括它们

    公开(公告)号：US20140078618A1

    公开(公告)日：2014-03-20

    申请号：US13792932

    申请日：2013-03-11

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Takuya Matsumoto ,  Tomoko Taguchi ,  Kenichiro Yamada ,  Naoyuki Narita

    IPC: G11B5/23 ,  G11B5/127

    CPC classification number: G11B5/23 ,  G11B5/1278 ,  G11B5/314 ,  G11B2005/0024

    Abstract: According to one embodiment, a magnetic recording head of a disk drive includes a main pole configured to generate a magnetic field in a direction perpendicular to a recording layer of a recording medium, a write shield magnetic pole opposite to a trailing side of the main pole with a gap, a coil configured to excite a magnetic flux in a magnetic circuit, and a high-frequency oscillator provided between a tip portion of the main pole on a side of the recording medium and the write shield magnetic pole to generate a high-frequency magnetic field. The write shield magnetic pole includes an end face opposite to the high-frequency oscillator and the end face is formed so that a distance from the main pole increases with an increasing distance from the recording medium.

    Abstract translation: 根据一个实施例，磁盘驱动器的磁记录头包括被配置为在垂直于记录介质的记录层的方向上产生磁场的主极，与主极的后侧相对的写保护磁极 具有间隙，被配置为激励磁路中的磁通的线圈，以及设置在记录介质侧的主极的顶端部分与写保护磁极之间的高频振荡器， 频率磁场。 写屏蔽磁极包括与高频振荡器相对的端面，并且端面形成为使得距离主极的距离随着与记录介质的距离的增加而增加。

    Magnetic recording head and disk device with the same
    5.
    发明授权
    Magnetic recording head and disk device with the same 有权

    公开(公告)号：US09978404B2

    公开(公告)日：2018-05-22

    申请号：US14797599

    申请日：2015-07-13

    Applicant: Kabushiki Kaisha Toshiba

    Inventor： Tomoko Taguchi ,  Yusuke Tomoda ,  Kenichiro Yamada ,  Satoshi Shirotori ,  Naoyuki Narita

    IPC: G11B5/127 ,  G11B5/31 ,  G11B5/00

    CPC classification number: G11B5/314 ,  G11B5/1278 ,  G11B2005/0024

    Abstract: According to one embodiment, a magnetic recording head includes an air bearing surface, a magnetic pole having a distal end portion, a write shield opposed to the distal end portion of the magnetic pole across a write gap, and a high-frequency oscillator between the magnetic pole and the write shield in the write gap. The high-frequency oscillator includes a spin injection layer, an intermediate layer and an oscillation layer which are stacked in a head travel direction. A film thickness of the spin injection layer in the head travel direction at a height position away from the air bearing surface is greater than a film thickness of the spin injection layer in the head travel direction on the air bearing surface.

    MAGNETIC RECORDING HEAD AND DISK DRIVE WITH THE SAME
    6.
    发明申请
    MAGNETIC RECORDING HEAD AND DISK DRIVE WITH THE SAME 审中-公开
    磁记录头和磁盘驱动器

    公开(公告)号：US20140362468A1

    公开(公告)日：2014-12-11

    申请号：US14021874

    申请日：2013-09-09

    Applicant: Kabushiki Kaisha Toshiba

    Inventor： Tomoko Taguchi ,  Kenichiro Yamada

    IPC: G11B5/23

    CPC classification number: G11B5/1278 ,  G11B5/3116 ,  G11B5/3136

    Abstract: According to one embodiment, a magnetic recording head of a disk drive includes a main pole configured to produce a recording magnetic field perpendicular to a recording layer of a recording medium, a trailing shield located on the trailing side of the main pole with a write gap therebetween, a recording coil configured to produce a magnetic field in the main pole, and a nonmagnetic film containing a nonmagnetic material with a negative thermal expansion coefficient and disposed in the write gap between the trailing shield and a distal end portion of the main pole.

    Abstract translation: 根据一个实施例，磁盘驱动器的磁记录头包括被配置为产生垂直于记录介质的记录层的记录磁场的主极，位于主极的后侧的后屏蔽，具有写间隙 配置为在主极中产生磁场的记录线圈和包含具有负热膨胀系数的非磁性材料的非磁性膜，并设置在后挡板和主极的远端部之间的写入间隙中。

    MAGNETIC RECORDING HEAD AND DISK DEVICE COMPRISING THE SAME
    7.
    发明申请
    MAGNETIC RECORDING HEAD AND DISK DEVICE COMPRISING THE SAME 审中-公开

    公开(公告)号：US20170186452A1

    公开(公告)日：2017-06-29

    申请号：US15059890

    申请日：2016-03-03

    Applicant: Kabushiki Kaisha Toshiba

    Inventor： Takuya Matsumoto ,  Tomoko Taguchi

    IPC: G11B5/31

    CPC classification number: G11B5/315 ,  G11B5/1278

    Abstract: According to one embodiment, a magnetic recording head includes an air bearing surface, a main pole including a tip end portion exposed to the air bearing face and configured to produce a recording magnetic field, a write shield opposing the tip end portion of the main pole with a write gap, a pair of side shields disposed on both sides of the main pole in a track-width direction, respectively, and a conductor provided between surfaces of each of the pair of side shields and the main pole over an entire track width of the side shields, to allow currents to flow in a plane direction of the air bearing surface.

    MAGNETIC RECORDING HEAD AND DISK DEVICE WITH THE SAME
    9.
    发明申请
    MAGNETIC RECORDING HEAD AND DISK DEVICE WITH THE SAME 有权
    磁记录头和磁盘装置

    公开(公告)号：US20160314809A1

    公开(公告)日：2016-10-27

    申请号：US14797599

    申请日：2015-07-13

    Applicant: Kabushiki Kaisha Toshiba

    Inventor： Tomoko Taguchi ,  Yusuke Tomoda ,  Kenichiro Yamada ,  Satoshi Shirotori ,  Naoyuki Narita

    IPC: G11B5/60 ,  G11B5/39 ,  G11B5/127

    CPC classification number: G11B5/314 ,  G11B5/1278 ,  G11B2005/0024

    Abstract: According to one embodiment, a magnetic recording head includes an air bearing surface, a magnetic pole having a distal end portion, a write shield opposed to the distal end portion of the magnetic pole across a write gap, and a high-frequency oscillator between the magnetic pole and the write shield in the write gap. The high-frequency oscillator includes a spin injection layer, an intermediate layer and an oscillation layer which are stacked in a head travel direction. A film thickness of the spin injection layer in the head travel direction at a height position away from the air bearing surface is greater than a film thickness of the spin injection layer in the head travel direction on the air bearing surface.

    Abstract translation: 根据一个实施例，磁记录头包括空气轴承表面，具有远端部分的磁极，与写入间隙的磁极的远端部分相对的写入屏蔽以及位于写入间隙之间的高频振荡器 磁极和写入屏蔽在写入间隙。 高频振荡器包括沿磁头行进方向堆叠的自旋注入层，中间层和振荡层。 离开空气轴承表面的高度位置处的头行进方向上的自旋注入层的膜厚度大于空气轴承表面上的头行进方向上的自旋注入层的膜厚度。

    MAGNETIC HEAD AND MAGNETIC DISK DEVICE
    10.
    发明申请
    MAGNETIC HEAD AND MAGNETIC DISK DEVICE 有权
    磁头和磁盘设备

    公开(公告)号：US20160064020A1

    公开(公告)日：2016-03-03

    申请号：US14625338

    申请日：2015-02-18

    Applicant: KABUSHIKI KAISHA TOSHIBA

    Inventor： Toshiyuki Ikai ,  Tomoko Taguchi ,  Kenichiro Aoki

    IPC: G11B5/48 ,  G11B5/255

    CPC classification number: G11B5/3136 ,  G11B5/012 ,  G11B5/1278 ,  G11B5/255 ,  G11B5/314 ,  G11B5/3909 ,  G11B5/3967 ,  G11B5/483 ,  G11B5/6058 ,  G11B5/6088 ,  G11B2005/0021 ,  G11B2005/3996

    Abstract: According to one embodiment, a magnetic head is arranged opposite a magnetic recording medium including a recording layer. The magnetic head includes a magnetic pole, a light emitting unit, and a distance adjusting unit. The magnetic pole includes a soft magnetic material. The light emitting unit is arranged with respect to the magnetic pole in a travel direction of the magnetic head, and emits light with respect to the recording layer. The distance adjusting unit adjusts a distance between the magnetic pole and the light emitting unit.

    Abstract translation: 根据一个实施例，磁头布置成与包括记录层的磁记录介质相对。 磁头包括磁极，发光单元和距离调节单元。 磁极包括软磁材料。 发光单元相对于磁极在磁头的行进方向上布置，并相对于记录层发光。 距离调节单元调节磁极和发光单元之间的距离。

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