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    Magnetic recording head and disk drive provided therewith
    51.
    发明授权
    Magnetic recording head and disk drive provided therewith 有权
    提供磁记录头和磁盘驱动器

    公开(公告)号：US08976490B2

    公开(公告)日：2015-03-10

    申请号：US13565418

    申请日：2012-08-02

    申请人： Kenichiro Yamada ,  Katsuhiko Koui

    发明人： Kenichiro Yamada ,  Katsuhiko Koui

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

    CPC分类号： G11B5/35 ,  G11B5/1278 ,  G11B5/315 ,  G11B2005/0005 ,  G11B2005/0024

    摘要： According to one embodiment, a magnetic recording head includes a main pole configured to apply a recording magnetic field to a recording layer of a recording medium, a trailing shield opposed to the main pole with a write gap therebetween, and a high-frequency oscillator between the main pole and the trailing shield in a range of a width of the main pole in a track width direction, and configured to generate a high-frequency magnetic field. The high-frequency oscillator includes a spin injection layer, an intermediate layer, and an oscillation layer, and at least the oscillation layer comprises divided oscillation regions.

    摘要翻译： 根据一个实施例，磁记录头包括：主极，被配置为向记录介质的记录层施加记录磁场;与主极相对的后屏蔽，其间具有写入间隙;以及高频振荡器， 所述主极和所述后屏蔽体在所述主极的宽度方向上在轨道宽度方向上的宽度范围内，并且被配置为产生高频磁场。 高频振荡器包括自旋注入层，中间层和振荡层，至少振荡层包括分频振荡区域。

    HIGH FREQUENCY MAGNETIC FIELD ASSISTED MAGNETIC RECORDING HEAD
    52.
    发明申请
    HIGH FREQUENCY MAGNETIC FIELD ASSISTED MAGNETIC RECORDING HEAD 有权
    高频磁场辅助磁记录头

    公开(公告)号：US20140063658A1

    公开(公告)日：2014-03-06

    申请号：US13968720

    申请日：2013-08-16

    申请人： Hitachi, Ltd.

    发明人： Junichiro SHIMIZU ,  Kikuo KUSUKAWA ,  Yo SATO ,  Masukazu IGARASHI

    IPC分类号： G11B5/35 ,  G11B5/84

    CPC分类号： G11B5/35 ,  G11B5/1278 ,  G11B5/314 ,  G11B5/84 ,  G11B2005/0024

    摘要： To uniformly determine the positional relationship between a main magnetic pole and a spin torque oscillator while independently optimizing the main magnetic pole and the spin torque oscillator. On a trailing end surface of a main magnetic pole, a step is provided at the boundary between the main magnetic pole and a gap material disposed on both sides thereof, and a spin torque oscillator is formed on the step. The spin torque oscillator is effectively separated into two regions by utilizing the step. Further, a part of the spin torque oscillator is removed so as to disable the unwanted region, thereby realizing a self-alignment type high frequency magnetic field assisted magnetic recording head structure such that the positions of the end portions of the main magnetic pole and the spin torque oscillator are aligned.

    摘要翻译： 为了均匀地确定主磁极和自旋转矩振荡器之间的位置关系，同时独立地优化主磁极和自旋转矩振荡器。 在主磁极的尾端表面上，在主磁极和设置在主磁极两侧的间隙材料之间的边界处设置有台阶，在该台阶上形成自旋转矩振荡器。 旋转扭矩振荡器通过利用该步骤被有效地分成两个区域。 此外，除去一部分自旋转矩振荡器以便禁止不期望的区域，从而实现自对准型高频磁场辅助磁记录头结构，使得主磁极和端子的端部的位置 自旋扭矩振荡器对齐。

    Magnetoresistive element and magnetic detector and use thereof
    53.
    发明授权
    Magnetoresistive element and magnetic detector and use thereof 失效
    磁阻元件和磁检测器及其用途

    公开(公告)号：US6054226A

    公开(公告)日：2000-04-25

    申请号：US997473

    申请日：1997-12-23

    申请人： Hideki Takeda ,  Tetsuya Katsumi

    发明人： Hideki Takeda ,  Tetsuya Katsumi

    IPC分类号： G01N27/72 ,  G01R33/09 ,  G11B5/33 ,  G11B5/35 ,  G11B5/39 ,  H01F10/08 ,  H01F10/18 ,  H01F10/30 ,  H01F10/32 ,  H01L39/22 ,  H01L41/12 ,  H01L43/08 ,  H01L43/10 ,  G11B5/66

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G01R33/093 ,  G11B5/33 ,  G11B5/35 ,  G11B5/3903 ,  G11B5/3967 ,  H01F10/3254 ,  H01L43/10 ,  G11B2005/3996 ,  Y10S428/90 ,  Y10T428/1121 ,  Y10T428/12958

    摘要： A magnetoresistive element comprising a combination of an electroconductive, crystalline magnetostrictive material or an amorphous magnetostrictive material with an electrically insulating layer and an oxide magnetoresistive material, or a combination of an electrically insulating oxide magnetostrictive material with an oxide magnetoresistive material. The magnetoresistive element provides a magnetic detecting element, detector or recording device having high sensitivity and good quick response by virtue of synergistic effect of the large magnetostriction and the magnetoresistance effect thereof. The oxide magnetoresistive material is preferably an oxide having a perovskite structure or a layer perovskite structure and the preferred magnetostrictive material is a crystalline or amorphous ferromagnetic material. The electrically insulating layer is formed of preferably an oxide having a perovskite structure.

    摘要翻译： 包括导电，结晶磁致伸缩材料或非晶磁致伸缩材料与电绝缘层和氧化物磁阻材料的组合的磁阻元件，或电绝缘氧化物磁致伸缩材料与氧化物磁阻材料的组合。 磁阻元件借助于大磁致伸缩及其磁阻效应的协同效应，提供具有高灵敏度和良好快速响应的磁检测元件，检测器或记录装置。 氧化物磁阻材料优选为具有钙钛矿结构或钙钛矿结构的氧化物，优选的磁致伸缩材料为结晶或无定形铁磁材料。 电绝缘层优选由具有钙钛矿结构的氧化物形成。

    Optical pickup for optical magnetic disc
    54.
    发明授权
    Optical pickup for optical magnetic disc 失效
    光磁盘光拾取器

    公开(公告)号：US5587976A

    公开(公告)日：1996-12-24

    申请号：US555967

    申请日：1995-11-13

    申请人： Jang-hoon Yoo ,  Kyung-hwa Rim ,  Chong-sam Chung ,  Chul-woo Lee

    发明人： Jang-hoon Yoo ,  Kyung-hwa Rim ,  Chong-sam Chung ,  Chul-woo Lee

    IPC分类号： G11B11/10 ,  G11B5/00 ,  G11B5/012 ,  G11B5/35 ,  G11B5/596 ,  G11B7/12 ,  G11B11/105 ,  G11B7/00

    CPC分类号： G11B11/10543 ,  G11B5/00 ,  G11B5/012 ,  G11B5/35 ,  G11B5/596

    摘要： An optical pickup for an optical magnetic disc includes a light source, a grating for diffracting the light into a main light beam and auxiliary light beams, a plurality of magnetic dipole tips arranged above the optical magnetic disc so as to interact with the magnetic signal stored in the optical magnetic disc. Also, a plurality of mirror members each attached to the rear of each magnetic dipole tips are for reflecting the light incident on the mirror member, and a photodetector for detecting track errors and the stored information by receiving the light reflected from the mirror members are provided, thereby detecting the error signal and reproducing information by the interaction with the magnetic dipoles of the disc so that the recording density can be increased without increasing the conventional land and groove areas in the disc.

    摘要翻译： 一种用于光磁盘的光拾取器包括光源，用于将光衍射成主光束的光栅和辅助光束，布置在光磁盘上方的多个磁偶极子尖端，以便与存储的磁信号相互作用 在光磁盘中。 此外，各个安装在每个磁偶极头的后面的多个镜构件用于反射入射在镜构件上的光，并且设置用于检测轨道错误的光电检测器和通过接收从镜构件反射的光的存储信息 从而通过与盘的磁偶极子的相互作用来检测误差信号和再现信息，从而可以增加记录密度，而不增加盘中常规的平台和凹槽区域。

    Data storage device with phase lock spin-torque oscillation stabilization
    58.
    发明授权
    Data storage device with phase lock spin-torque oscillation stabilization 有权
    数据存储装置具有锁相自旋转矩振荡稳定

    公开(公告)号：US09390734B2

    公开(公告)日：2016-07-12

    申请号：US14879906

    申请日：2015-10-09

    申请人： Seagate Technology LLC

    发明人： Kaizhong Gao

    IPC分类号： G11B5/147 ,  G11B5/35 ,  G11B5/012 ,  G11B5/60 ,  G11B5/11 ,  G11B5/00

    CPC分类号： G11B5/35 ,  G11B5/012 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/147 ,  G11B5/235 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/3146 ,  G11B5/6082 ,  G11B2005/0024

    摘要： A data storage device can be configured at least with a first spin-torque oscillator disposed between and contacting a write pole and a shield on an air bearing surface. A second spin-torque oscillator can be disposed between and contact the write pole and shield with the second spin-torque oscillator separated from the air bearing surface by a first stabilization distance and from the first spin-torque oscillator by a second stabilization distance. The first and second spin-torque oscillators can be configured to magnetostatically couple and phase lock to produce a single microwave frequency in response to a bias field.

    摘要翻译： 数据存储装置可以至少配置有第一自旋扭矩振荡器，其布置在空气支承表面上并与空气支承表面上的写极和屏蔽件接触。 第二自旋扭矩振荡器可以设置在第一稳定距离之间并且与第一自旋扭矩振荡器隔开第二稳定距离并且与第二自旋转矩振荡器与第二自旋转矩振荡器分离并与第二自旋扭矩振荡器接触。 第一和第二自旋扭矩振荡器可被配置为静磁耦合和锁相，以产生响应于偏置场的单个微波频率。

    Spin torque oscillator with low magnetic moment and high perpendicular magnetic anisotropy material
    59.
    发明授权
    Spin torque oscillator with low magnetic moment and high perpendicular magnetic anisotropy material 有权
    具有低磁矩和高垂直磁各向异性材料的自旋扭矩振荡器

    公开(公告)号：US09378759B2

    公开(公告)日：2016-06-28

    申请号：US14548853

    申请日：2014-11-20

    申请人： HGST Netherlands B.V.

    发明人： Keiichi Nagasaka ,  Yo Sato ,  Masashige Sato ,  Susumu Okamura ,  Masato Shiimoto ,  Masukazu Igarashi

    IPC分类号： G11B5/31 ,  G11B5/35 ,  G11B5/00

    CPC分类号： G11B5/35 ,  G11B5/314 ,  G11B5/607 ,  G11B2005/0024

    摘要： Embodiments disclosed herein generally relate to a magnetic disk device employing a MAMR head. The MAMR head includes an STO. The STO comprises an underlayer, an SPL, an interlayer, an FGL, and a capping layer. The SPL is comprised of a high perpendicular magnetic anisotropy material. The SPL has a large effective perpendicular magnetic anisotropy field, and the SPL has a lower magnetic moment than the FGL. An applied current is adapted to flow in a direction from the FGL to the SPL resulting in the magnetization direction of the SPL being almost perpendicular to the FGL and anti-parallel to a head-gap magnetic field due to a relation between a first spin torque directed from the SPL to the FGL and a second spin torque directed from the FGL to the SPL.

    摘要翻译： 本文公开的实施例通常涉及采用MAMR头的磁盘装置。 MAMR头包括STO。 STO包括底层，SPL，中间层，FGL和覆盖层。 SPL由高垂直磁各向异性材料组成。 SPL具有大的有效垂直磁各向异性场，SPL具有比FGL低的磁矩。 施加的电流适于沿着从FGL到SPL的方向流动，导致SPL的磁化方向几乎垂直于FGL，并且由于第一自旋转矩之间的关系而与头间隙磁场反平行 从SPL引导到FGL，以及从FGL指向SPL的第二自旋扭矩。