公开(公告)号：US07537845B2

公开(公告)日：2009-05-26

申请号：US11364172

申请日：2006-03-01

Applicant: Byung-kyu Lee ,  Hoon-sang Oh ,  Kyung-jin Lee

Inventor： Byung-kyu Lee ,  Hoon-sang Oh ,  Kyung-jin Lee

IPC: G11B5/64

CPC classification number: G11B5/66 ,  G11B5/656 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/74 ,  G11B2005/0005 ,  G11B2005/001 ,  G11B2005/0029

Abstract: A perpendicular magnetic recording medium having a good thermal stability and a high recording density is provided. The perpendicular magnetic recording medium includes at least a first and a second perpendicular magnetic recording layer and a substrate supporting the first and the second perpendicular magnetic recording layers. The first and the second perpendicular magnetic recording layers have different physical/magnetic properties and are formed of materials that compensate the different physical/magnetic properties. The first and the second perpendicular magnetic recording layers are selected from a layer for improving perpendicular magnetic anisotropic energy (Ku), a layer for reducing the size of crystal grains, a layer for reducing the size of magnetic domains, a layer for increasing an SNR, a layer for improving signal output, a layer for reducing noise, a layer for improving the uniformity of crystal grain sizes, and a layer for improving the uniformity of magnetic domain sizes.

Abstract translation: 提供具有良好热稳定性和高记录密度的垂直磁记录介质。 垂直磁记录介质至少包括第一和第二垂直磁记录层以及支撑第一和第二垂直磁记录层的基板。 第一和第二垂直磁记录层具有不同的物理/磁性，并且由补偿不同物理/磁性的材料形成。 第一和第二垂直磁记录层选自用于改善垂直磁各向异性能（Ku）的层，用于减小晶粒尺寸的层，用于减小磁畴尺寸的层，用于增加SNR的层 ，用于改善信号输出的层，用于降低噪声的层，用于改善晶粒尺寸的均匀性的层，以及用于提高磁畴尺寸的均匀性的层。

公开(公告)号：US20080085429A1

公开(公告)日：2008-04-10

申请号：US11869811

申请日：2007-10-10

Applicant: Hoon-sang Oh ,  Tae-hyo Lee ,  Byung-kyu Lee

Inventor： Hoon-sang Oh ,  Tae-hyo Lee ,  Byung-kyu Lee

IPC: G11B5/00

CPC classification number: G11B5/8404 ,  G11B5/653 ,  G11B5/656 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/7379

Abstract: Provided are a perpendicular magnetic recording medium having an underlayer between a substrate and a recording layer and a method of manufacturing the perpendicular magnetic recording medium. The method of manufacturing a perpendicular magnetic recording medium includes forming the underlayer of a plural-layer structure by at least 2 step processes under different deposition conditions. When using the underlayer formed by a 2-step manufacturing method, superior crystalline and high perpendicular magnetic anisotropy can be secured due to the lower underlayer, and the perpendicular magnetic recording layer having a high perpendicular coercivity and a small magnetic domain can be formed due to the underlayer beneath the recording layer.

Abstract translation: 提供了一种在基板和记录层之间具有底层的垂直磁记录介质以及垂直磁记录介质的制造方法。 制造垂直磁记录介质的方法包括在不同沉积条件下通过至少两步工艺形成多层结构的底层。 当使用通过2步制造方法形成的底层时，由于较低的底层可以确保优异的晶体和高垂直磁各向异性，并且由于可以形成具有高垂直矫顽力和小磁畴的垂直磁记录层 记录层下面的底层。

公开(公告)号：US20080050616A1

公开(公告)日：2008-02-28

申请号：US11713730

申请日：2007-03-05

Applicant: Myung-bok Lee ,  Jin-seung Sohn ,  Byung-kyu Lee ,  Du-hyun Lee

Inventor： Myung-bok Lee ,  Jin-seung Sohn ,  Byung-kyu Lee ,  Du-hyun Lee

IPC: G11B5/66 ,  B05D5/12

CPC classification number: G11B5/855 ,  G11B5/66 ,  G11B5/7379 ,  G11B5/858 ,  H01F10/123 ,  H01F10/16 ,  H01F10/265 ,  H01F41/34

Abstract: Provided are a method of manufacturing a magnetic layer, a patterned magnetic recording medium including magnetic layers formed using the method, and a method of manufacturing the patterned magnetic recording medium. The method of manufacturing the magnetic layers includes: forming a template provided with an opening; forming a seed layer on a bottom of the opening; and inserting a magnetic material onto the seed layer to form a magnetic layer. The patterned magnetic recording medium includes a lower layer formed on a substrate; a template formed on the lower layer and including a plurality of holes exposing the lower layer; seed layers covering the lower layer exposed through the holes; and magnetic layers formed on the seed layers to fill the holes.

Abstract translation: 提供了一种制造磁性层的方法，包括使用该方法形成的磁性层的图案化磁记录介质以及制造图案化磁记录介质的方法。 制造磁性层的方法包括：形成设置有开口的模板; 在开口的底部形成种子层; 以及将磁性材料插入种子层以形成磁性层。 图案化的磁记录介质包括形成在基板上的下层; 模板，其形成在下层上并且包括暴露下层的多个孔; 覆盖通过孔露出的下层的种子层; 以及形成在种子层上以填充孔的磁性层。

公开(公告)号：US07108926B2

公开(公告)日：2006-09-19

申请号：US10029701

申请日：2001-12-31

Applicant: Byung-kyu Lee

Inventor： Byung-kyu Lee

IPC: G11B5/66 ,  G11B5/70

CPC classification number: G11B5/66

Abstract: Provided is a perpendicular magnetic recording medium including a perpendicular magnetic enhancement layer having a thickness of 15 nm or greater between a substrate and a perpendicular magnetic recording layer.

公开(公告)号：US20060198950A1

公开(公告)日：2006-09-07

申请号：US11367452

申请日：2006-03-06

Applicant: Byung-kyu Lee

Inventor： Byung-kyu Lee

IPC: B05D5/12 ,  G03C5/00

CPC classification number: G11B5/855 ,  G03F1/50 ,  G03F1/54 ,  G03F7/2014

Abstract: Provided is a method of manufacturing a patterned recording medium. The method includes depositing a magnetic thin film on a substrate, aligning a hard mask that has a plurality of penetration holes regularly distributed therein above the magnetic thin film, irradiating the hard mask, and removing the hard mask.

Abstract translation: 提供了一种制造图案化记录介质的方法。 该方法包括在基板上沉积磁性薄膜，对准具有规则分布在磁性薄膜上方的多个穿透孔的硬掩模，照射硬掩模，以及去除硬掩模。

公开(公告)号：US07101634B2

公开(公告)日：2006-09-05

申请号：US10456572

申请日：2003-06-09

Applicant: Byung-kyu Lee ,  Hoon-sang Oh

Inventor： Byung-kyu Lee ,  Hoon-sang Oh

IPC: G11B5/66 ,  G11B5/70

CPC classification number: G11B5/7325

Abstract: A perpendicular magnetic recording medium including a perpendicular magnetic recording layer placed over a substrate, and a multi-layered perpendicular orientation underlayer placed between the substrate and the perpendicular magnetic recording layer and having first and third underlayers each made of Pt or an alloy thereof. Due to the use of a three-layered perpendicular orientation underlayer, an excellent perpendicular orientation and a consistent crystal lattice of a Pt underlayer are obtained. Also, the perpendicular orientation underlayer has small crystal grains. Thus, the perpendicular orientation underlayer having excellent perpendicular orientation and small crystal grains enables a perpendicular magnetic recording layer to have a good thermal stability, a high recording density, and a high SNR.

Abstract translation: 包括放置在基板上的垂直磁记录层的垂直磁记录介质和放置在基板和垂直磁记录层之间的多层垂直取向底层，并且具有由Pt或其合金制成的第一和第三底层。 由于使用三层垂直取向底层，获得了Pt底层优异的垂直取向和一致的晶格。 此外，垂直取向底层具有小的晶粒。 因此，具有优异的垂直取向和小晶粒的垂直取向底层使得垂直磁记录层具有良好的热稳定性，高记录密度和高SNR。

公开(公告)号：US20050164035A1

公开(公告)日：2005-07-28

申请号：US11014239

申请日：2004-12-17

Applicant: Byung-kyu Lee ,  Hoon-sang Oh

Inventor： Byung-kyu Lee ,  Hoon-sang Oh

IPC: G11B5/65 ,  G11B5/64 ,  G11B5/66 ,  G11B5/667 ,  G11B5/738 ,  G11B5/855

CPC classification number: G11B5/855 ,  G11B5/66

Abstract: A magnetic recording medium including a magnetic recording layer containing magnetic crystal grains and a substrate supporting the magnetic recording layer. The magnetic recording layer is composed of a porous crystal isolating membrane having micropores capable of magnetically and physically isolating the magnetic crystal grains. A transition metal element selected from Co, Fe, Ni, Cr, Pt, Pd, Ti, Ta, Ru, Si, Al, Nb, B, Nd, Sm and Pr or an alloy thereof is impregnated into the pores. The magnetic recording medium has superior thermal stability and S/N characteristics.

Abstract translation: 一种磁记录介质，包括含有磁性晶粒的磁记录层和支撑该磁记录层的基板。 磁记录层由具有磁性和物理分离磁性晶粒的微孔的多孔结晶隔离膜组成。 将选自Co，Fe，Ni，Cr，Pt，Pd，Ti，Ta，Ru，Si，Al，Nb，B，Nd，Sm和Pr或其合金中的过渡金属元素浸渍到孔中。 磁记录介质具有优异的热稳定性和S / N特性。

公开(公告)号：US06916556B2

公开(公告)日：2005-07-12

申请号：US10032103

申请日：2001-12-31

Applicant: Byung-kyu Lee

Inventor： Byung-kyu Lee

IPC: G11B5/65 ,  G11B5/62 ,  G11B5/64 ,  G11B5/66 ,  G11B5/667 ,  G11B5/72 ,  G11B5/725 ,  G11B5/738 ,  G11B5/70

CPC classification number: G11B5/66 ,  Y10T428/265

Abstract: Provided is a perpendicular magnetic recording medium in which a perpendicular orientation promoting underlayer is formed between a substrate and a perpendicular magnetic recording layer for inducing the perpendicular orientation of the perpendicular magnetic recording layer, the perpendicular magnetic recording medium further including a crystal growth discontinuation layer between the substrate and the perpendicular orientation promoting underlayer for suppressing continuous crystal growth from the underlayer to the perpendicular magnetic recording layer. The effective suppression of crystal growth in the perpendicular magnetic recording layer results in low noise levels. Therefore, the perpendicular magnetic recording medium has high-density recording applications with increased signal-to-noise ratio.

Abstract translation: 提供了一种垂直磁记录介质，其中在基板和垂直磁记录层之间形成垂直取向促进底层，用于引起垂直磁记录层的垂直取向，垂直磁记录介质还包括晶体生长中断层之间， 衬底和用于抑制从底层到垂直磁记录层的连续晶体生长的垂直取向促进底层。 在垂直磁记录层中有效抑制晶体生长导致低的噪声水平。 因此，垂直磁记录介质具有增加的信噪比的高密度记录应用。

公开(公告)号：US20050129985A1

公开(公告)日：2005-06-16

申请号：US11008179

申请日：2004-12-10

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

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

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

CPC classification number: G11B5/667 ,  G11B5/653 ,  G11B5/656 ,  Y10T428/265

Abstract: 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.

Abstract translation: 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。