公开(公告)号：US20080259482A1

公开(公告)日：2008-10-23

申请号：US11788630

申请日：2007-04-20

申请人： Kiseok Moon ,  Soo Youl Hong ,  Yawshing Tang ,  Xiaodong Che

发明人： Kiseok Moon ,  Soo Youl Hong ,  Yawshing Tang ,  Xiaodong Che

IPC分类号： G11B5/02 ,  G11B5/127 ,  B05D5/12 ,  G11B5/82

CPC分类号： G11B5/82 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/855

摘要： A magnetic media that has at least one groove. The groove is created by a process that includes initially forming a temporary layer over a magnetic layer of the disk. One or more grooves are formed in the temporary and magnetic layers. The temporary layer is removed and a protective layer is formed over the magnetic layer and within the groove.

摘要翻译： 具有至少一个凹槽的磁性介质。 凹槽由包括最初在盘的磁性层上形成临时层的工艺产生。 在临时层和磁层中形成一个或多个凹槽。 移除临时层，并且在磁性层上和沟槽内形成保护层。

公开(公告)号：US20100149677A1

公开(公告)日：2010-06-17

申请号：US12335822

申请日：2008-12-16

申请人： Carl Xiaodong Che ,  Keung Youn Cho ,  Soo-Youl Hong ,  Shuo-Hao Chen

发明人： Carl Xiaodong Che ,  Keung Youn Cho ,  Soo-Youl Hong ,  Shuo-Hao Chen

IPC分类号： G11B5/03

CPC分类号： G11B5/0245

摘要： A method for erasing a disk of a hard disk drive. The method includes moving the hard disk drive adjacent to an erasure head that emanates a magnetic field. The magnetic field and moving hard disk drive cause a disk of the hard disk drive to spin under a Lorentz force created by the magnetic field and moving disk. The magnetic field is applied by the erasure head for a duration that causes erasure of the entire disk. The spindle motor is not activated during the entire process. Not activating the spindle motor eliminates any Faraday coupling from the erasure head into the motor.

摘要翻译： 一种擦除硬盘驱动器的磁盘的方法。 该方法包括移动与发出磁场的擦除头相邻的硬盘驱动器。 磁场和移动的硬盘驱动器使得硬盘驱动器的磁盘以由磁场和移动盘产生的洛伦兹力驱动。 通过擦除头施加磁场持续一段时间，导致整个磁盘的擦除。 主轴电机在整个过程中未被激活。 不激活主轴电机消除了从擦除头到电机的任何法拉第耦合。

公开(公告)号：US20050129985A1

公开(公告)日：2005-06-16

申请号：US11008179

申请日：2004-12-10

申请人： Hoon-sang Oh ,  Byung-kyu Lee ,  Kyung-jin Lee ,  Soo-youl Hong

发明人： Hoon-sang Oh ,  Byung-kyu Lee ,  Kyung-jin Lee ,  Soo-youl Hong

IPC分类号： G11B5/667 ,  G11B5/64 ,  G11B5/65 ,  G11B5/73

CPC分类号： G11B5/667 ,  G11B5/653 ,  G11B5/656 ,  Y10T428/265

摘要： A perpendicular magnetic recording medium having a perpendicular magnetic recording layer provided on a substrate and a soft underlayer formed between the substrate and the perpendicular magnetic recording layer. The soft underlayer includes a plurality of soft underlayers having different saturation magnetizations so as to improve signal-to-noise ratio, and at least one of the soft underlayers has a magnetization easy axis in a radial direction so as to improve transition noise.

摘要翻译： 具有设置在基板上的垂直磁记录层和形成在基板和垂直磁记录层之间的软底层的垂直磁记录介质。 软底层包括具有不同的饱和磁化的多个软底层，以便提高信噪比，并且软底层中的至少一个在径向方向上具有易磁化轴，从而改善过渡噪声。

公开(公告)号：US07876519B2

公开(公告)日：2011-01-25

申请号：US12335822

申请日：2008-12-16

申请人： Carl Xiaodong Che ,  Keung Youn Cho ,  Soo-Youl Hong ,  Shuo-Hao Chen

发明人： Carl Xiaodong Che ,  Keung Youn Cho ,  Soo-Youl Hong ,  Shuo-Hao Chen

IPC分类号： G11B5/03 ,  H01F13/00

CPC分类号： G11B5/0245

摘要： A method for erasing a disk of a hard disk drive. The method includes moving the hard disk drive adjacent to an erasure head that emanates a magnetic field. The magnetic field and moving hard disk drive cause a disk of the hard disk drive to spin under a Lorentz force created by the magnetic field and moving disk. The magnetic field is applied by the erasure head for a duration that causes erasure of the entire disk. The spindle motor is not activated during the entire process. Not activating the spindle motor eliminates any Faraday coupling from the erasure head into the motor.

摘要翻译： 一种擦除硬盘驱动器的磁盘的方法。 该方法包括移动与发出磁场的擦除头相邻的硬盘驱动器。 磁场和移动的硬盘驱动器使得硬盘驱动器的磁盘以由磁场和移动盘产生的洛伦兹力驱动。 通过擦除头施加磁场持续一段时间，导致整个磁盘的擦除。 主轴电机在整个过程中未被激活。 不激活主轴电机消除了从擦除头到电机的任何法拉第耦合。

公开(公告)号：US06228515B1

公开(公告)日：2001-05-08

申请号：US09175475

申请日：1998-10-20

申请人： Kyung-Ho Shin ,  Taek-Dong Lee ,  Soo-Youl Hong

发明人： Kyung-Ho Shin ,  Taek-Dong Lee ,  Soo-Youl Hong

IPC分类号： G11B564

CPC分类号： G11B5/732 ,  G11B5/7325

摘要： The present invention relates to an underlayer for use in a high density magnetic recording media. More particularly, the invention relates to an underlayer for use in a high density magnetic recording media comprising A1Pd or CoTi intermetallic compound having B2 crystal structure, or Co50Ti50-xMxmetal alloy in which Ti in CoTi intermetallic compound is partly substituted by other substitutional elements while maintaining its B2 crystal structure, or CoTi/Cr of a double thin film structure in which a Cr seed layer is introduced. The underlayer provided by the present invention has a crystal structure and microstructure suitable for a high density magnetic recording media, which makes a good texture structure with a Co-based magnetic layer deposited thereon and shows fine grain size distribution, high coercity and high coercity squareness.

摘要翻译： 本发明涉及一种用于高密度磁记录介质的底层。 更具体地说，本发明涉及一种用于包含具有B2晶体结构的AlPd或CoTi金属间化合物的高密度磁记录介质的底层，或CoTiTi-xM x金属合金，其中CoTi金属间化合物中的Ti部分地被其它取代元素取代，同时保持 其B2晶体结构，或其中引入Cr种子层的双重薄膜结构的CoTi / Cr。由本发明提供的底层具有适合于高密度磁记录介质的晶体结构和微结构，这使得良好 纹理结构，其上沉积有Co基磁性层，并显示出细小的粒度分布，高强度和高强度矩形度。