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：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：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：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：US20100233515A1

公开(公告)日：2010-09-16

申请号：US12722581

申请日：2010-03-12

申请人： Sok-hyun Kong ,  Hoo-san Lee ,  Sadayuki Watanabe ,  Shunji Takenoiri

发明人： Sok-hyun Kong ,  Hoo-san Lee ,  Sadayuki Watanabe ,  Shunji Takenoiri

IPC分类号： G11B5/706

CPC分类号： G11B5/66

摘要： A perpendicular type of magnetic recording medium has a multi-layered recording structure made up of a plurality of ferro-magnetic layers and a non-magnetic layer interposed between the plurality of ferro-magnetic layers, and the perpendicular magnetic anisotropy energy of the lower ferro-magnetic layer is greater than the perpendicular magnetic anisotropy energy of the upper ferro-magnetic layer. Accordingly, the lower ferro-magnetic layer may be easily magnetically reversed by a magnetic field applied during a write operation. Thus, the perpendicular type of magnetic recording medium exhibits an enhanced thermal stability and write-ability.

摘要翻译： 垂直型的磁记录介质具有由多个铁磁层和介于多个铁磁层之间的非磁性层构成的多层记录结构，并且下铁的垂直磁各向异性能 磁性层大于上磁铁层的垂直磁各向异性能。 因此，通过在写入操作期间施加的磁场，可以容易地使低铁磁性层磁性地反转。 因此，垂直型磁记录介质表现出增强的热稳定性和写入能力。

公开(公告)号：US10026429B2

公开(公告)日：2018-07-17

申请号：US12722581

申请日：2010-03-12

申请人： Sok-hyun Kong ,  Hoo-san Lee ,  Sadayuki Watanabe ,  Shunji Takenoiri

发明人： Sok-hyun Kong ,  Hoo-san Lee ,  Sadayuki Watanabe ,  Shunji Takenoiri

IPC分类号： G11B5/66

CPC分类号： G11B5/66

摘要： A perpendicular type of magnetic recording medium has a multi-layered recording structure made up of a plurality of ferro-magnetic layers and a non-magnetic layer interposed between the plurality of ferro-magnetic layers, and the perpendicular magnetic anisotropy energy of the lower ferro-magnetic layer is greater than the perpendicular magnetic anisotropy energy of the upper ferro-magnetic layer. Accordingly, the lower ferro-magnetic layer may be easily magnetically reversed by a magnetic field applied during a write operation. Thus, the perpendicular type of magnetic recording medium exhibits an enhanced thermal stability and write-ability.

公开(公告)号：US08021770B2

公开(公告)日：2011-09-20

申请号：US12722565

申请日：2010-03-12

申请人： Sok-hyun Kong ,  Hoo-san Lee ,  Sadayuki Watanabe ,  Shunji Takenoiri

发明人： Sok-hyun Kong ,  Hoo-san Lee ,  Sadayuki Watanabe ,  Shunji Takenoiri

IPC分类号： G11B5/66

CPC分类号： G11B5/667 ,  G11B5/7325

摘要： A perpendicular type of magnetic recording medium includes a substrate, a soft magnetic underlying section including a plurality of distinct layers soft magnetic material, a recording section, and an intermediate section upon which the recording section is formed. The intermediate section is provided to improve the crystal orientation and impart a desired magnetic characteristic to the recording section. An uppermost one of the layers of soft magnetic material which, of all of the layers of soft magnetic material, is disposed closest to the intermediate section is predisposed to induce the intermediate section to crystallize in a desired way as it is formed. Therefore, the intermediate section may have a minimal thickness and yet achieve a crystallization that is sufficient to control the forming of the recording section.

摘要翻译： 垂直型磁记录介质包括基板，包括多个不同层软磁材料的软磁下面部分，记录部分和形成记录部分的中间部分。 提供中间部分以改善晶体取向并赋予记录部分期望的磁特性。 软磁性材料层的最上层的一层软磁材料层最靠近中间部分设置，以使中间部分在其形成时以所需的方式结晶。 因此，中间部分可以具有最小的厚度，并且实现足以控制记录部分的形成的结晶。

公开(公告)号：US20100233516A1

公开(公告)日：2010-09-16

申请号：US12722565

申请日：2010-03-12

申请人： Sok-hyun Kong ,  Hoo-san Lee ,  Sadayuki Watanabe ,  Shunji Takenoiri

发明人： Sok-hyun Kong ,  Hoo-san Lee ,  Sadayuki Watanabe ,  Shunji Takenoiri

IPC分类号： G11B5/706

CPC分类号： G11B5/667 ,  G11B5/7325

摘要： A perpendicular type of magnetic recording medium includes a substrate, a soft magnetic underlying section including a plurality of distinct layers soft magnetic material, a recording section, and an intermediate section upon which the recording section is formed. The intermediate section is provided to improve the crystal orientation and impart a desired magnetic characteristic to the recording section. An uppermost one of the layers of soft magnetic material which, of all of the layers of soft magnetic material, is disposed closest to the intermediate section is predisposed to induce the intermediate section to crystallize in a desired way as it is formed. Therefore, the intermediate section may have a minimal thickness and yet achieve a crystallization that is sufficient to control the forming of the recording section.

摘要翻译： 垂直型磁记录介质包括基板，包括多个不同层软磁材料的软磁下面部分，记录部分和形成记录部分的中间部分。 提供中间部分以改善晶体取向并赋予记录部分期望的磁特性。 软磁性材料层的最上层的一层软磁材料层最靠近中间部分设置，以使中间部分在其形成时以所需的方式结晶。 因此，中间部分可以具有最小的厚度，并且实现足以控制记录部分的形成的结晶。

公开(公告)号：US08441754B2

公开(公告)日：2013-05-14

申请号：US12485150

申请日：2009-06-16

申请人： Hoo-san Lee ,  Sok-hyun Kong ,  Sung-chul Lee

发明人： Hoo-san Lee ,  Sok-hyun Kong ,  Sung-chul Lee

IPC分类号： G11B5/596

CPC分类号： G11B5/865 ,  G11B5/59638

摘要： A servo master having a pattern capable of being magnetically transferred as a servo pattern to a magnetic recording medium, wherein the servo master is formed of a material having a magnetic anisotropic constant perpendicular to a surface of the magnetic recording medium. The magnetic transfer method can include preparing a servo master patterned with a servo pattern to be formed on a magnetic recording medium, and arranging the servo master on the magnetic recording medium and applying an external magnetic field to the servo master in a first direction perpendicular to a recording surface of the magnetic recording medium, and in a second direction parallel to the recording surface of the magnetic recording medium.

摘要翻译： 一种具有能够作为伺服图案磁转印到磁记录介质的图案的伺服主机，其中伺服主机由具有垂直于磁记录介质表面的磁各向异性常数的材料形成。 磁转移方法可以包括制备图案化的伺服母模，以形成在磁记录介质上的伺服模式，并将伺服主机布置在磁记录介质上，并在与伺服主机垂直的第一方向上向伺服主机施加外部磁场 磁记录介质的记录表面，并且在平行于磁记录介质的记录表面的第二方向上。