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    • 1. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US08007931B2
    • 2011-08-30
    • US11698081
    • 2007-01-26
    • Hoo-san LeeChee-kheng LimHoon-sang OhSok-hyun Kong
    • Hoo-san LeeChee-kheng LimHoon-sang OhSok-hyun Kong
    • G11B5/66
    • G11B5/667Y10T428/24942
    • 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).
    • 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)。
    • 2. 发明申请
    • Magnetic recording medium
    • 磁记录介质
    • US20070230053A1
    • 2007-10-04
    • US11655217
    • 2007-01-19
    • Sok-hyun KongChee-kheng LimHoon-sang OhHoo-san LeeSeong-yong Yoon
    • Sok-hyun KongChee-kheng LimHoon-sang OhHoo-san LeeSeong-yong Yoon
    • G11B5/74
    • G11B5/667
    • 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.
    • 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。
    • 3. 发明申请
    • Magnetic recording medium
    • 磁记录介质
    • US20070212575A1
    • 2007-09-13
    • US11698081
    • 2007-01-26
    • Hoo-san LeeChee-kheng LimHoon-sang OhSok-hyun Kong
    • Hoo-san LeeChee-kheng LimHoon-sang OhSok-hyun Kong
    • G11B5/66
    • G11B5/667Y10T428/24942
    • 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).
    • 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)。
    • 8. 发明授权
    • Perpendicular magnetic recording head having a tapered main pole
    • 具有锥形主极的垂直磁记录头
    • US08098456B2
    • 2012-01-17
    • US11413000
    • 2006-04-28
    • Chee-kheng LimYong-su KimHoo-san Lee
    • Chee-kheng LimYong-su KimHoo-san Lee
    • G11B5/127
    • G11B5/1278G11B5/11
    • 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.
    • 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。
    • 9. 发明申请
    • Perpendicular magnetic recording head
    • 垂直磁记录头
    • US20060256473A1
    • 2006-11-16
    • US11413000
    • 2006-04-28
    • Chee-kheng LimYong-su KimHoo-san Lee
    • Chee-kheng LimYong-su KimHoo-san Lee
    • G11B5/147
    • G11B5/1278G11B5/11
    • 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.
    • 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。