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。

公开(公告)号：US08361641B2

公开(公告)日：2013-01-29

申请号：US12018270

申请日：2008-01-23

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

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

IPC分类号： G11B5/66

CPC分类号： G11B5/667 ,  G11B5/64 ,  G11B5/65 ,  G11B5/7325 ,  G11B5/84

摘要： A perpendicular magnetic recording medium and a method of manufacturing the same are provided. The perpendicular magnetic recording medium comprises a recording layer including a plurality of regions formed in the depth direction of the recording layer and a magnetic anisotropy constant of a region relatively deeper than another region, among the plurality of regions, is greater than that of the another region. The method of manufacturing a perpendicular magnetic recording medium includes: forming a recording layer having perpendicular magnetic anisotropy; and irradiating the recording layer with ions.

摘要翻译： 提供了一种垂直磁记录介质及其制造方法。 垂直磁记录介质包括记录层，该记录层包括在记录层的深度方向上形成的多个区域和多个区域中比另一区域相对更深的区域的磁各向异性常数大于另一区域的磁各向异性常数 地区。 制造垂直磁记录介质的方法包括：形成具有垂直磁各向异性的记录层; 并用离子照射记录层。

公开(公告)号：US20080299416A1

公开(公告)日：2008-12-04

申请号：US12018270

申请日：2008-01-23

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

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

IPC分类号： G11B5/62 ,  G11B5/66 ,  G11B5/84 ,  G11B5/65

CPC分类号： G11B5/667 ,  G11B5/64 ,  G11B5/65 ,  G11B5/7325 ,  G11B5/84

摘要： A perpendicular magnetic recording medium and a method of manufacturing the same are provided. The perpendicular magnetic recording medium comprises a recording layer including a plurality of regions formed in the depth direction of the recording layer and a magnetic anisotropy constant of a region relatively deeper than another region, among the plurality of regions, is greater than that of the another region. The method of manufacturing a perpendicular magnetic recording medium includes: forming a recording layer having perpendicular magnetic anisotropy; and irradiating the recording layer with ions.

摘要翻译： 提供了一种垂直磁记录介质及其制造方法。 垂直磁记录介质包括记录层，该记录层包括在记录层的深度方向上形成的多个区域和多个区域中比另一区域相对更深的区域的磁各向异性常数大于另一区域的磁各向异性常数 地区。 制造垂直磁记录介质的方法包括：形成具有垂直磁各向异性的记录层; 并用离子照射记录层。

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：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：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：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。

公开(公告)号：US20060256473A1

公开(公告)日：2006-11-16

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： G11B5/147

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。

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。