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    Perpendicular magnetic recording head
    1.
    发明授权
    Perpendicular magnetic recording head 失效
    垂直磁记录头

    公开(公告)号：US07672081B2

    公开(公告)日：2010-03-02

    申请号：US11503296

    申请日：2006-08-14

    申请人： Chee-kheng Lim ,  Eun-sik Kim ,  Yong-su Kim

    发明人： Chee-kheng Lim ,  Eun-sik Kim ,  Yong-su Kim

    IPC分类号： G11B5/127

    CPC分类号： G11B5/012 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B2005/0029

    摘要： A perpendicular magnetic recording head which moves in a track direction of a recording layer of a perpendicular magnetic recording medium to write information on the recording layer or read information from the recording layer. The perpendicular magnetic recording head includes: the perpendicular magnetic recording medium including a soft magnetic underlayer and the recording layer; a write head including a main pole that applies a magnetic field to, and writes information to, the recording layer and a return pole having a first end which is connected to the main pole and having a second end which is spaced apart from the main pole over an air bearing surface (ABS) of the perpendicular magnetic recording head which is adjacent to the recording layer; and a permanent magnet formed on at least one side of the write head.

    摘要翻译： 垂直磁记录头，其在垂直磁记录介质的记录层的轨道方向上移动以在记录层上写入信息或从记录层读取信息。 垂直磁记录头包括：包括软磁性底层和记录层的垂直磁记录介质; 写头，其包括向记录层施加磁场并向其写入信息的主极;以及返回极，其具有连接到主极的第一端，并且具有与主极间隔开的第二端 在与记录层相邻的垂直磁记录头的空气轴承表面（ABS）上; 以及形成在所述写入头的至少一侧上的永磁体。

    Multi-bit magnetic memory device using spin-polarized current and methods of manufacturing and operating the same
    2.
    发明申请
    Multi-bit magnetic memory device using spin-polarized current and methods of manufacturing and operating the same 有权
    使用自旋极化电流的多位磁存储器件及其制造和操作方法

    公开(公告)号：US20070206405A1

    公开(公告)日：2007-09-06

    申请号：US11347228

    申请日：2006-02-06

    申请人： Chee-kheng Lim ,  Yong-su Kim

    发明人： Chee-kheng Lim ,  Yong-su Kim

    IPC分类号： G11C11/00

    CPC分类号： H01L43/08 ,  B82Y10/00 ,  G11C11/16 ,  G11C11/5607 ,  H01L27/228

    摘要： A multi-bit magnetic memory device using a spin-polarized current and methods of manufacturing and operating the same. The magnetic memory device includes a switching device and a magnetic storage node connected to the switching device, wherein the magnetic storage node includes a first magnetic layer, a second magnetic layer and a free magnetic layer which are vertically and separately disposed from one another. The first and second magnetic layer have transmission characteristics opposite to each other for spin-polarized electrons, and have magnetic polarizations that are opposite to each other. The free magnetic layer may include first and second free magnetic layers, which are separately disposed from each other. The magnetic storage node may further include third and fourth magnetic layers that are separately disposed between the first and second free magnetic layers.

    摘要翻译： 使用自旋极化电流的多位磁存储器件及其制造和操作方法。 磁存储器件包括连接到开关器件的开关器件和磁存储节点，其中磁存储节点包括彼此垂直且分开设置的第一磁性层，第二磁性层和自由磁性层。 第一和第二磁性层对于自旋极化电子具有彼此相反的传输特性，并且具有彼此相反的磁极化。 自由磁性层可以包括彼此分开设置的第一和第二自由磁性层。 磁存储节点还可以包括分开设置在第一和第二自由磁性层之间的第三和第四磁性层。

    Perpendicular magnetic recording media with laminated soft magnetic underlayer
    4.
    发明授权
    Perpendicular magnetic recording media with laminated soft magnetic underlayer 失效
    垂直磁记录介质，层叠软磁底层

    公开(公告)号：US07601443B2

    公开(公告)日：2009-10-13

    申请号：US11259085

    申请日：2005-10-27

    申请人： Chee-kheng Lim ,  Yong-su Kim ,  Byung-kyu Lee ,  Hoon-sang Oh ,  Tae-hyo Lee

    发明人： Chee-kheng Lim ,  Yong-su Kim ,  Byung-kyu Lee ,  Hoon-sang Oh ,  Tae-hyo Lee

    IPC分类号： G11B5/66 ,  G11B5/667 ,  G11B5/673

    CPC分类号： G11B5/66 ,  G11B5/653 ,  G11B5/656 ,  G11B5/667

    摘要： A recording medium including a perpendicular magnetic recording layer and a laminated SUL formed on a substrate is provided. The SUL includes an antiferromagnetic layer interposed between laminated structures including a magnetic layer, a non-magnetic layer and a magnetic layer. The layers may each have a thickness of 20 nm or less and the layers below the antiferromagnetic layer may be thinner than the layers on the antiferromagnetic layer. The laminated structures formed on and below the antiferromagnetic layer have unidirectional magnetic anisotropies set in the opposite radial direction to each other by an exchange bias. As a result, media magnetic domain noise can be diminished.

    摘要翻译： 提供了包括在基板上形成的垂直磁记录层和层叠SUL的记录介质。 SUL包括介于包括磁性层，非磁性层和磁性层的层压结构之间的反铁磁性层。 这些层可以各自具有20nm或更小的厚度，并且反铁磁层下面​​的层可以比反铁磁性层上的层更薄。 形成在反铁磁性层上和下方的叠层结构具有通过交换偏压彼此相反的径向方向设置的单向磁各向异性。 结果，媒体磁畴噪声可以减弱。

    Semiconductor device using magnetic domain wall moving
    5.
    发明申请
    Semiconductor device using magnetic domain wall moving 有权
    半导体器件采用磁畴壁移动

    公开(公告)号：US20080025060A1

    公开(公告)日：2008-01-31

    申请号：US11655927

    申请日：2007-01-22

    申请人： Chee-kheng Lim ,  Yong-su Kim

    发明人： Chee-kheng Lim ,  Yong-su Kim

    IPC分类号： G11C19/00

    CPC分类号： G11C19/0808 ,  G11C11/14 ,  G11C19/0841 ,  Y10S977/933

    摘要： Provided is a semiconductor device that uses magnetic domain wall movement. The semiconductor device includes a magnetic wire having a plurality of magnetic domains, wherein the magnetic wire comprises a magnetic domain wall that is moved by either a pulse field or a pulse current. The magnetic wire of the semiconductor device does not require an additional notch since the magnetic wire includes a magnetic domain wall, the moving distance of which is controlled by a pulse field or a pulse current.

    摘要翻译： 提供了使用磁畴壁运动的半导体器件。 半导体器件包括具有多个磁畴的磁线，其中磁线包括通过脉冲场或脉冲电流移动的磁畴壁。 半导体器件的磁线不需要额外的凹口，因为磁线包括磁畴壁，其移动距离由脉冲场或脉冲电流控制。

    Perpendicular magnetic recording head
    6.
    发明申请
    Perpendicular magnetic recording head 失效
    垂直磁记录头

    公开(公告)号：US20070035884A1

    公开(公告)日：2007-02-15

    申请号：US11503296

    申请日：2006-08-14

    申请人： Chee-kheng Lim ,  Eun-sik Kim ,  Yong-su Kim

    发明人： Chee-kheng Lim ,  Eun-sik Kim ,  Yong-su Kim

    IPC分类号： G11B5/33

    CPC分类号： G11B5/012 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B2005/0029

    摘要： A perpendicular magnetic recording head which moves in a track direction of a recording layer of a perpendicular magnetic recording medium to write information on the recording layer or read information from the recording layer. The perpendicular magnetic recording head includes: the perpendicular magnetic recording medium including a soft magnetic underlayer and the recording layer; a write head including a main pole that applies a magnetic field to, and writes information to, the recording layer and a return pole having a first end which is connected to the main pole and having a second end which is spaced apart from the main pole over an air bearing surface (ABS) of the perpendicular magnetic recording head which is adjacent to the recording layer; and a permanent magnet formed on at least one side of the write head.

    摘要翻译： 垂直磁记录头，其在垂直磁记录介质的记录层的轨道方向上移动以在记录层上写入信息或从记录层读取信息。 垂直磁记录头包括：包括软磁性底层和记录层的垂直磁记录介质; 写头，其包括向记录层施加磁场并向其写入信息的主极;以及返回极，其具有连接到主极的第一端，并且具有与主极间隔开的第二端 在与记录层相邻的垂直磁记录头的空气轴承表面（ABS）上; 以及形成在所述写入头的至少一侧上的永磁体。

    Perpendicular magnetic recording head having a tapered main pole
    7.
    发明授权
    Perpendicular magnetic recording head having a tapered main pole 失效
    具有锥形主极的垂直磁记录头

    公开(公告)号：US08098456B2

    公开(公告)日：2012-01-17

    申请号：US11413000

    申请日：2006-04-28

    申请人： Chee-kheng Lim ,  Yong-su Kim ,  Hoo-san Lee

    发明人： Chee-kheng Lim ,  Yong-su Kim ,  Hoo-san Lee

    IPC分类号： G11B5/127

    CPC分类号： G11B5/1278 ,  G11B5/11

    摘要： A perpendicular magnetic recording head including: a data recording module comprising a main pole, a return pole, and a coil wrapped around the main pole; and a data reproduction module including magnetic shield layers and a reading device located between the magnetic shield layers, wherein the width of a lower end of the main pole is gradually reduced in a downward direction thereof, and the lower end of the main pole comprises a first part and a second part extending from the first part, the first part having a curved surface of a first curvature and the second part having a curved surface of a second curvature. The first curvature can be equal to or different from the second curvature, and magnetic shield devices can be further disposed on both sides of the lower end of the main pole.

    摘要翻译： 一种垂直磁记录头，包括：数据记录模块，包括主极，返回极和缠绕在主极上的线圈; 以及包括磁屏蔽层和位于磁屏蔽层之间的读取装置的数据再现模块，其中主极的下端的宽度在其向下的方向上逐渐减小，并且主极的下端包括 第一部分和第二部分从第一部分延伸，第一部分具有第一曲率的曲面，第二部分具有第二曲率的曲面。 第一曲率可以等于或不同于第二曲率，并且磁屏蔽装置可以进一步设置在主极的下端的两侧。

    Perpendicular recording medium having recording layer with controlled properties and method of manufacturing the perpendicular recording medium
    9.
    发明申请
    Perpendicular recording medium having recording layer with controlled properties and method of manufacturing the perpendicular recording medium 审中-公开
    具有受控特性的记录层的垂直记录介质和垂直记录介质的制造方法

    公开(公告)号：US20070020487A1

    公开(公告)日：2007-01-25

    申请号：US11484692

    申请日：2006-07-12

    申请人： Chee-kheng Lim ,  No-yeol Park ,  Yong-su Kim ,  Hoon-sang Oh

    发明人： Chee-kheng Lim ,  No-yeol Park ,  Yong-su Kim ,  Hoon-sang Oh

    IPC分类号： G11B5/65 ,  B05D5/12

    CPC分类号： G11B5/66 ,  G11B5/65 ,  G11B5/667 ,  G11B5/7379

    摘要： Provided is a perpendicular magnetic recording medium. The perpendicular magnetic recording medium includes: a lower structure; and a recording layer formed on the lower structure, wherein the recording layer has a balancing force 2πMr2/K1 of 0.5 or less and a factor 4πMr/Hc of 0.8 or less where Mr denotes a remnant magnetization, K1 denotes a perpendicular magnetic anisotropy energy constant, and Hc denotes a coercive force. Accordingly, even though grain boundaries between grains that constitute the recording layer are somewhat non-uniform in width, the grains can have almost the same nucleation field. As a result, the perpendicular magnetic recording medium can ensure high recording density and stability of recorded information.

    摘要翻译： 提供了一种垂直磁记录介质。 垂直磁记录介质包括：下结构; 以及形成在下部结构上的记录层，其中记录层具有0.5或更小的平衡力2piMr 2 / K 1和0.8或更小的因子4piMr / Hc，其中Mr表示残余磁化强度 ，K 1表示垂直磁各向异性能常数，Hc表示矫顽力。 因此，即使构成记录层的晶粒之间的晶界在宽度上有些不均匀，晶粒也可以具有几乎相同的成核场。 结果，垂直磁记录介质可以确保记录信息的高记录密度和稳定性。