公开(公告)号：US20070171575A1

公开(公告)日：2007-07-26

申请号：US11657595

申请日：2007-01-25

申请人： Chee-kheng Lim ,  Eun-sik Kim ,  Hoon-sang Oh

发明人： Chee-kheng Lim ,  Eun-sik Kim ,  Hoon-sang Oh

IPC分类号： G11B23/03

CPC分类号： G11B5/7325

摘要： A perpendicular magnetic recording medium is provided. The perpendicular magnetic recording medium includes a soft magnetic underlayer, a recording layer formed on the soft magnetic underlayer, and a damping control layer which controls a damping constant of the soft magnetic underlayer.

摘要翻译： 提供垂直磁记录介质。 垂直磁记录介质包括软磁性底层，形成在软磁性底层上的记录层，以及控制软磁性底层阻尼常数的阻尼控制层。

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。

公开(公告)号：US07652906B2

公开(公告)日：2010-01-26

申请号：US11851049

申请日：2007-09-06

申请人： Chee-kheng Lim ,  Eun-sik Kim ,  Sung-chul Lee

发明人： Chee-kheng Lim ,  Eun-sik Kim ,  Sung-chul Lee

IPC分类号： G11C19/00

CPC分类号： G11C11/14 ,  G11C19/0808 ,  G11C19/0816 ,  G11C19/0841 ,  Y10S977/933

摘要： Provided is a memory device employing magnetic domain wall movement. The memory device includes a first track, an interconnecting layer, and a second track. The first track including a magnetic material is formed in a first direction. The interconnecting layer is formed on the first track. The second track including a magnetic material is formed in a second direction on the interconnecting layer.

摘要翻译： 提供了采用磁畴壁运动的存储器件。 存储器件包括第一轨道，互连层和第二轨道。 包括磁性材料的第一轨迹形成在第一方向上。 互连层形成在第一轨道上。 包括磁性材料的第二轨道在互连层上沿第二方向形成。

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。

公开(公告)号：US07639454B2

公开(公告)日：2009-12-29

申请号：US11493585

申请日：2006-07-27

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

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

IPC分类号： G11B5/11 ,  G11B5/23

CPC分类号： G11B5/3116 ,  G11B5/11 ,  G11B5/1278 ,  G11B5/3146 ,  G11B5/315

摘要： A perpendicular magnetic recording head includes: a main pole; a return pole spaced a predetermined gap from the main pole; an induction coil inducing a magnetic field on the main pole; and two or more gap shields, wherein the two or more gap shields are formed in the gap between the main pole and the return pole.

摘要翻译： 垂直磁记录头包括：主极; 与主极间隔开预定间隙的返回极; 感应线圈，在主极上引起磁场; 和两个或更多个间隙屏蔽，其中两个或更多个间隙屏蔽形成在主极和返回极之间的间隙中。

公开(公告)号：US20080158707A1

公开(公告)日：2008-07-03

申请号：US11980627

申请日：2007-10-31

申请人： Hoo-san Lee ,  Chee-kheng Lim ,  Hoon-sang Oh

发明人： Hoo-san Lee ,  Chee-kheng Lim ,  Hoon-sang Oh

IPC分类号： G11B5/02

CPC分类号： G11C11/14 ,  G11C19/0808 ,  Y10T428/11

摘要： An information storage device includes a record head and a data recording medium. The record head includes a magnetic substance having magnetic domain walls and records data in the data recording medium. In a method of operating the information storage device, a first high frequency current or a high frequency magnetic field is supplied to the magnetic substance while magnetic domain walls of the magnetic substance are moved.

摘要翻译： 信息存储装置包括记录头和数据记录介质。 记录头包括具有磁畴壁的磁性物质，并将数据记录在数据记录介质中。 在操作信息存储装置的方法中，在磁性物质的磁畴壁移动的同时向磁性物质提供第一高频电流或高频磁场。

公开(公告)号：US20070212575A1

公开(公告)日：2007-09-13

申请号：US11698081

申请日：2007-01-26

申请人： Hoo-san Lee ,  Chee-kheng Lim ,  Hoon-sang Oh ,  Sok-hyun Kong

发明人： Hoo-san Lee ,  Chee-kheng Lim ,  Hoon-sang Oh ,  Sok-hyun Kong

IPC分类号： G11B5/66

CPC分类号： G11B5/667 ,  Y10T428/24942

摘要： A perpendicular magnetic recording medium including: a substrate; a perpendicular magnetic recording layer disposed over the substrate; a soft magnetic underlayer disposed between the substrate and the perpendicular magnetic recording layer; a shunting layer disposed under the soft magnetic underlayer; and an isolation layer disposed between the soft magnetic underlayer and the shunting layer and providing magnetic isolation between the shunting layer and the other layers disposed over the shunting layer are provided. The shunting layer is magnetically separated from the other magnetic layers disposed over the shunting layer, and shunts a magnetic field generated by the magnetic domain walls of the soft magnetic underlayer such that the magnetic field cannot reach a magnetic head, thereby increasing a signal-to-noise ratio (SNR).

摘要翻译： 一种垂直磁记录介质，包括：基板; 设置在所述基板上的垂直磁记录层; 设置在基板和垂直磁记录层之间的软磁性底层; 配置在软磁性底层下方的分路层; 并且设置在软磁性底层和分流层之间并且在分流层和设置在分流层之上的其它层之间提供磁隔离的隔离层。 分流层与设置在分流层上的其他磁性层磁分离，并且分流由软磁性底层的磁畴壁产生的磁场，使得磁场不能到达磁头，从而增加信号到 - 噪声比（SNR）。

公开(公告)号：US08007931B2

公开(公告)日：2011-08-30

申请号：US11698081

申请日：2007-01-26

申请人： Hoo-san Lee ,  Chee-kheng Lim ,  Hoon-sang Oh ,  Sok-hyun Kong

发明人： Hoo-san Lee ,  Chee-kheng Lim ,  Hoon-sang Oh ,  Sok-hyun Kong

IPC分类号： G11B5/66

CPC分类号： G11B5/667 ,  Y10T428/24942

摘要： A perpendicular magnetic recording medium including: a substrate; a perpendicular magnetic recording layer disposed over the substrate; a soft magnetic underlayer disposed between the substrate and the perpendicular magnetic recording layer; a shunting layer disposed under the soft magnetic underlayer; and an isolation layer disposed between the soft magnetic underlayer and the shunting layer and providing magnetic isolation between the shunting layer and the other layers disposed over the shunting layer are provided. The shunting layer is magnetically separated from the other magnetic layers disposed over the shunting layer, and shunts a magnetic field generated by the magnetic domain walls of the soft magnetic underlayer such that the magnetic field cannot reach a magnetic head, thereby increasing a signal-to-noise ratio (SNR).

摘要翻译： 一种垂直磁记录介质，包括：基板; 设置在所述基板上的垂直磁记录层; 设置在基板和垂直磁记录层之间的软磁性底层; 配置在软磁性底层下方的分路层; 并且设置在软磁性底层和分流层之间并且在分流层和设置在分流层之上的其它层之间提供磁隔离的隔离层。 分流层与设置在分流层上的其他磁性层磁分离，并且分流由软磁性底层的磁畴壁产生的磁场，使得磁场不能到达磁头，从而增加信号到 - 噪声比（SNR）。

公开(公告)号：US07869264B2

公开(公告)日：2011-01-11

申请号：US11980627

申请日：2007-10-31

申请人： Hoo-san Lee ,  Chee-kheng Lim ,  Hoon-sang Oh

发明人： Hoo-san Lee ,  Chee-kheng Lim ,  Hoon-sang Oh

IPC分类号： G11C11/00

CPC分类号： G11C11/14 ,  G11C19/0808 ,  Y10T428/11

摘要： An information storage device includes a record head and a data recording medium. The record head includes a magnetic substance having magnetic domain walls and records data in the data recording medium. In a method of operating the information storage device, a first high frequency current or a high frequency magnetic field is supplied to the magnetic substance while magnetic domain walls of the magnetic substance are moved.

摘要翻译： 信息存储装置包括记录头和数据记录介质。 记录头包括具有磁畴壁的磁性物质，并将数据记录在数据记录介质中。 在操作信息存储装置的方法中，在磁性物质的磁畴壁移动的同时向磁性物质提供第一高频电流或高频磁场。

公开(公告)号：US20070230053A1

公开(公告)日：2007-10-04

申请号：US11655217

申请日：2007-01-19

申请人： Sok-hyun Kong ,  Chee-kheng Lim ,  Hoon-sang Oh ,  Hoo-san Lee ,  Seong-yong Yoon

发明人： Sok-hyun Kong ,  Chee-kheng Lim ,  Hoon-sang Oh ,  Hoo-san Lee ,  Seong-yong Yoon

IPC分类号： G11B5/74

CPC分类号： G11B5/667

摘要： A magnetic recording medium is provided. The magnetic recording medium includes: a substrate; a perpendicular magnetic recording layer which is formed over the substrate; a first soft magnetic underlayer which is disposed between the perpendicular magnetic recording layer and the substrate; a second soft magnetic underlayer which is disposed between the first soft magnetic underlayer and the perpendicular magnetic recording layer; and an isolation layer which is disposed between the first soft magnetic underlayer and the second magnetic layer and which prevents magnetic interaction between the first soft magnetic underlayer and the second soft magnetic underlayer, wherein anisotropy field Hk of the second soft magnetic underlayer is greater than anisotropy field Hk of the first soft magnetic underlayer.

摘要翻译： 提供磁记录介质。 磁记录介质包括：基板; 垂直磁记录层，形成在衬底上; 设置在垂直磁记录层和基板之间的第一软磁性底层; 第二软磁性底层，其设置在第一软磁性底层和垂直磁记录层之间; 以及隔离层，其设置在所述第一软磁性底层和所述第二磁性层之间，并且防止所述第一软磁性底层和所述第二软磁性底层之间的磁性相互作用，其中所述第一软磁性底层和所述第二软磁性底层的各向异性场H 第二软磁性底层比第一软磁性底层的各向异性场H k大。