公开(公告)号：US08021770B2

公开(公告)日：2011-09-20

申请号：US12722565

申请日：2010-03-12

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

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

IPC: G11B5/66

CPC classification number: G11B5/667 ,  G11B5/7325

Abstract: 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.

Abstract translation: 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：US07885026B2

公开(公告)日：2011-02-08

申请号：US12018430

申请日：2008-01-23

Applicant: Hoo-san Lee ,  Hoon-sang Oh ,  Sung-hoon Choa

Inventor： Hoo-san Lee ,  Hoon-sang Oh ,  Sung-hoon Choa

IPC: G11B5/09

CPC classification number: G11B5/59655 ,  G11B5/59688

Abstract: A magnetic recording medium and a method of fabricating the same are provided. The magnetic recording medium in which a position for magnetic recording is patterned with a magnetic material, includes a magnetic recording layer which includes a data area having a plurality of data tracks, and a servo area having a servo burst for following the data tracks, wherein the servo burst includes a plurality of bursts disposed in a zigzag structure along a downtrack direction, and each of the bursts includes a plurality of burst pieces having different coercivities from each other. The magnetic recording medium is subjected to two servo-recording processes, so that a signal similar to an alternative signal written in a burst having a burst pattern used in a related art continuous medium can be obtained.

Abstract translation: 提供了一种磁记录介质及其制造方法。 其中用磁性材料构图磁记录位置的磁记录介质包括磁记录层，该磁记录层包括具有多个数据磁道的数据区，以及具有用于跟随数据磁道的伺服脉冲串的伺服区，其中 伺服脉冲串包括沿着下行方向以锯齿形结构设置的多个脉冲串，并且每个脉冲串包括彼此具有不同矫顽力的多个脉冲片。 对磁记录介质进行两次伺服记录处理，从而可以获得类似于在现有技术的连续介质中使用的具有突发图案的突发中写入的备选信号的信号。

公开(公告)号：US20100233516A1

公开(公告)日：2010-09-16

申请号：US12722565

申请日：2010-03-12

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

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

IPC: G11B5/706

CPC classification number: G11B5/667 ,  G11B5/7325

Abstract: 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.

Abstract translation: 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：US20090317663A1

公开(公告)日：2009-12-24

申请号：US12485093

申请日：2009-06-16

Applicant: Sok-hyun KONG ,  Hyung-ik LEE ,  Hoo-san LEE ,  Young-su CHUNG ,  Seong-yong YOON

Inventor： Sok-hyun KONG ,  Hyung-ik LEE ,  Hoo-san LEE ,  Young-su CHUNG ,  Seong-yong YOON

IPC: G11B5/725 ,  G11B5/72

CPC classification number: G11B5/72

Abstract: Provided is a magnetic recording medium. The magnetic recording medium includes a substrate, a recording layer disposed on the substrate for magnetic recording, and a carbon protection layer, which includes a carbon layer and a blocking layer disposed in the carbon layer to block infiltration of external impurities, disposed on the recording layer. Since the blocking layer is disposed in the carbon layer, a thickness of the carbon protection layer can be reduced while a sufficient hardness to protect the recording layer can be ensured, and moreover, a softness of the surface of the carbon protection layer can be improved.

Abstract translation: 提供了一种磁记录介质。 磁记录介质包括基板，设置在用于磁记录的基板上的记录层，以及碳保护层，其包括设置在记录介质上的碳层和设置在碳层中的阻挡层以阻挡外部杂质的渗透 层。 由于阻挡层设置在碳层中，所以可以降低碳保护层的厚度，同时可以确保足够的硬度来保护记录层，而且能够提高碳保护层的表面的柔软性 。

公开(公告)号：US20090068500A1

公开(公告)日：2009-03-12

申请号：US12061823

申请日：2008-04-03

Applicant: Sok-hyun KONG ,  Sang-hwan PARK ,  Hoo-san LEE ,  Taek-dong LEE ,  Hoon-sang OH

Inventor： Sok-hyun KONG ,  Sang-hwan PARK ,  Hoo-san LEE ,  Taek-dong LEE ,  Hoon-sang OH

IPC: G11B5/706 ,  B05D5/12 ,  C23C14/34

CPC classification number: G11B5/66 ,  G11B5/65 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/851

Abstract: Provided are a perpendicular magnetic recording medium and a method of manufacturing the same. The perpendicular magnetic recording medium includes: a substrate; a soft magnetic layer formed on the substrate; an underlayer formed on the soft magnetic layer; and a recording layer comprising a plurality of ferromagnetic layers and formed on the underlayer, wherein each of the plurality of ferromagnetic layers has a magnetic anisotropic energy which decreases as distance increases from the underlayer.

Abstract translation: 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：基板; 形成在所述基板上的软磁性层; 形成在软磁性层上的底层; 以及包括多个铁磁层并形成在所述底层上的记录层，其中所述多个铁磁层中的每一个具有随距离从所述底层距离增加而减小的磁各向异性能量。

公开(公告)号：US20090059429A1

公开(公告)日：2009-03-05

申请号：US12127390

申请日：2008-05-27

Applicant: Hoo-san Lee ,  Sung-Chul Lee ,  Hoon-Sang Oh

Inventor： Hoo-san Lee ,  Sung-Chul Lee ,  Hoon-Sang Oh

IPC: G11B5/82

CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/746 ,  G11B5/855

Abstract: Provided is a bit patterned medium including bridges which induce exchange coupling between adjacent bits in order to reduce a switching field difference resulting from different magnetization directions of bits. The bridges and the bits are integrally formed with each other. The bits are locally connected by the bridges. A magnetostatic force for each bit is reduced due to an exchange coupling between adjacent bits, thereby reducing a switching field distribution of the bits.

Abstract translation: 提供了包括桥的位图案化介质，其引起相邻位之间的交换耦合，以便减少由位的不同磁化方向引起的开关场差。 桥和钻头彼此一体形成。 这些位由桥接器本地连接。 由于相邻位之间的交换耦合，每个位的静磁力减小，从而减小位的开关场分布。

公开(公告)号：US20080084633A1

公开(公告)日：2008-04-10

申请号：US11729852

申请日：2007-03-30

Applicant: Hyun-jei Kim ,  Yong-su Kim ,  Hoon-sang Oh ,  Hoo-san Lee

Inventor： Hyun-jei Kim ,  Yong-su Kim ,  Hoon-sang Oh ,  Hoo-san Lee

IPC: G11B5/74

CPC classification number: G11B5/82 ,  B82Y10/00 ,  G11B5/02 ,  G11B5/314 ,  G11B5/3967 ,  G11B5/74 ,  G11B5/743 ,  G11B5/855 ,  G11B9/02 ,  G11B2005/0002

Abstract: An information recording medium, a method of manufacturing the information recording medium, a read/write head, and a method of manufacturing the read/write head are provided. The information recording medium includes magnetic recording layers formed of a ferromagnetic substance and electrical recording layers formed of a ferroelectric substance. The read/write head includes an electromagnetic write head including a main pole, a return pole magnetically connected to the main pole but electrically isolated from the main pole, a magnetic field applicator which applies a magnetic field to the main pole, and a voltage source which applies a bias voltage to the main pole; a magnetic read head provided an a side of the electromagnetic write head; and an electrical read head provided on an other side of the electromagnetic write head.

Abstract translation: 提供信息记录介质，制造信息记录介质的方法，读/写头以及制造读/写头的方法。 信息记录介质包括由铁磁物质形成的磁记录层和由铁电物质形成的电记录层。 读/写头包括电磁写入头，其包括主极，磁极连接到主极但与主极电隔离的返回极，向主极施加磁场的磁场施加器，以及电压源 其对主极施加偏置电压; 磁读头提供电磁写头的一侧; 以及设置在电磁写入头的另一侧的电读取头。

公开(公告)号：US20070298286A1

公开(公告)日：2007-12-27

申请号：US11643775

申请日：2006-12-22

Applicant: Hoo San Lee ,  Hoon Sang Oh ,  Sok Hyun Kong ,  Seong Yong Yoon

Inventor： Hoo San Lee ,  Hoon Sang Oh ,  Sok Hyun Kong ,  Seong Yong Yoon

IPC: G11B5/66

CPC classification number: G11B5/667 ,  G11B5/85

Abstract: A perpendicular magnetic recording medium is provided. The perpendicular magnetic recording medium includes: a perpendicular magnetic recording layer formed on a substrate; and at least one soft magnetic under-layer formed between the substrate and the perpendicular magnetic recording layer, wherein the soft magnetic under-layer is made from an alloy of a non-magnetic material and a magnetic material which exists in the form of granular nanoparticles in matrix of the non-magnetic material, and at least two of the magnetic nanoparticles are spaced apart from one another by a predetermined distance so as to mutually make an anti-ferromagnetic coupling.

Abstract translation: 提供垂直磁记录介质。 垂直磁记录介质包括：形成在基板上的垂直磁记录层; 以及形成在基板和垂直磁记录层之间的至少一个软磁底层，其中软磁底层由非磁性材料和磁性材料的合金制成，其以颗粒状纳米颗粒的形式存在 在非磁性材料的矩阵中，并且至少两个磁性纳米颗粒彼此隔开预定距离，以便相互进行反铁磁耦合。

公开(公告)号：US08441754B2

公开(公告)日：2013-05-14

申请号：US12485150

申请日：2009-06-16

Applicant: Hoo-san Lee ,  Sok-hyun Kong ,  Sung-chul Lee

Inventor： Hoo-san Lee ,  Sok-hyun Kong ,  Sung-chul Lee

IPC: G11B5/596

CPC classification number: G11B5/865 ,  G11B5/59638

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US08361641B2

公开(公告)日：2013-01-29

申请号：US12018270

申请日：2008-01-23

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

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

IPC: G11B5/66

CPC classification number: G11B5/667 ,  G11B5/64 ,  G11B5/65 ,  G11B5/7325 ,  G11B5/84

Abstract: 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.

Abstract translation: 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。