公开(公告)号：US06700739B2

公开(公告)日：2004-03-02

申请号：US09826367

申请日：2001-04-05

Applicant: Yong-su Kim ,  Young-hoon Im ,  Byung-kyu Lee

Inventor： Yong-su Kim ,  Young-hoon Im ,  Byung-kyu Lee

IPC: G11B5187

CPC classification number: G11B5/313 ,  G11B5/1871 ,  G11B5/23 ,  G11B5/3116 ,  G11B5/3166

Abstract: A magnetic head including an upper pole and a lower pole for generating a leakage magnetic flux to magnetize a recording medium to have a predetermined pattern, wherein the upper pole has a structure in which the central portion of a side opposite to the recording medium is thicker than the edges of the side. In this magnetic head, the upper pole has a shape in which its central portion protrudes higher than its edges. Thus, the shape of a magnetic field distributed can be maintained rectangular even if the width of the upper pole is reduced, which enables an increase in the track density of a recording medium.

Abstract translation: 一种包括上极和下极的磁头，用于产生泄漏磁通以磁化记录介质以具有预定图案，其中上极具有其中与记录介质相对的一侧的中心部分较厚的结构 比边的边缘。 在该磁头中，上极具有其中心部分比其边缘突出的形状。 因此，即使上极的宽度减小，分布的磁场的形状也可以保持矩形，这使得能够增加记录介质的轨道密度。

公开(公告)号：US20060093865A1

公开(公告)日：2006-05-04

申请号：US11259085

申请日：2005-10-27

Applicant: Chee-kheng Lim ,  Yong-su Kim ,  Byung-kyu Lee ,  Hoon-sang Oh ,  Tae-hyo Lee

Inventor： Chee-kheng Lim ,  Yong-su Kim ,  Byung-kyu Lee ,  Hoon-sang Oh ,  Tae-hyo Lee

IPC: G11B5/66

CPC classification number: G11B5/66 ,  G11B5/653 ,  G11B5/656 ,  G11B5/667

Abstract: A recording medium including a perpendicular magnetic recording layer and a laminated SUL formed on a substrate is provided. The SUL includes an antiferromagnetic layer interposed between laminated structures including a magnetic layer, a non-magnetic layer and a magnetic layer. The layers may each have a thickness of 20 nm or less and the layers below the antiferromagnetic layer may be thinner than the layers on the antiferromagnetic layer. The laminated structures formed on and below the antiferromagnetic layer have unidirectional magnetic anisotropies set in the opposite radial direction to each other by an exchange bias. As a result, media magnetic domain noise can be diminished.

公开(公告)号：US07601443B2

公开(公告)日：2009-10-13

申请号：US11259085

申请日：2005-10-27

Applicant: Chee-kheng Lim ,  Yong-su Kim ,  Byung-kyu Lee ,  Hoon-sang Oh ,  Tae-hyo Lee

Inventor： Chee-kheng Lim ,  Yong-su Kim ,  Byung-kyu Lee ,  Hoon-sang Oh ,  Tae-hyo Lee

IPC: G11B5/66 ,  G11B5/667 ,  G11B5/673

CPC classification number: G11B5/66 ,  G11B5/653 ,  G11B5/656 ,  G11B5/667

Abstract: A recording medium including a perpendicular magnetic recording layer and a laminated SUL formed on a substrate is provided. The SUL includes an antiferromagnetic layer interposed between laminated structures including a magnetic layer, a non-magnetic layer and a magnetic layer. The layers may each have a thickness of 20 nm or less and the layers below the antiferromagnetic layer may be thinner than the layers on the antiferromagnetic layer. The laminated structures formed on and below the antiferromagnetic layer have unidirectional magnetic anisotropies set in the opposite radial direction to each other by an exchange bias. As a result, media magnetic domain noise can be diminished.

Abstract translation: 提供了包括在基板上形成的垂直磁记录层和层叠SUL的记录介质。 SUL包括介于包括磁性层，非磁性层和磁性层的层压结构之间的反铁磁性层。 这些层可以各自具有20nm或更小的厚度，并且反铁磁层下面​​的层可以比反铁磁性层上的层更薄。 形成在反铁磁性层上和下方的叠层结构具有通过交换偏压彼此相反的径向方向设置的单向磁各向异性。 结果，媒体磁畴噪声可以减弱。

公开(公告)号：US08042259B2

公开(公告)日：2011-10-25

申请号：US12708341

申请日：2010-02-18

Applicant: Hoo-san Lee ,  Young-hun Im ,  Yong-su Kim

Inventor： Hoo-san Lee ,  Young-hun Im ,  Yong-su Kim

IPC: G11B5/127 ,  H04R31/00

CPC classification number: G11B5/1871 ,  G11B5/1278 ,  G11B5/3116 ,  Y10T29/49039 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

Abstract: A magnetic recording head and a method of manufacturing the same. The magnetic recording head includes a stack containing a main pole and a return pole. The stack includes a first magnetic layer having a groove formed therein; an insulating layer covering a surface of the groove; and a second magnetic layer pattern filling the groove covered with the insulating layer.

Abstract translation: 磁记录头及其制造方法。 磁记录头包括一个包含一个主极和一个返回极的堆叠。 堆叠包括其中形成有凹槽的第一磁性层; 覆盖所述槽的表面的绝缘层; 以及填充由绝缘层覆盖的沟槽的第二磁性层图案。

公开(公告)号：US07672081B2

公开(公告)日：2010-03-02

申请号：US11503296

申请日：2006-08-14

Applicant: Chee-kheng Lim ,  Eun-sik Kim ,  Yong-su Kim

Inventor： Chee-kheng Lim ,  Eun-sik Kim ,  Yong-su Kim

IPC: G11B5/127

CPC classification number: G11B5/012 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/3146 ,  G11B2005/0029

Abstract: A perpendicular magnetic recording head which moves in a track direction of a recording layer of a perpendicular magnetic recording medium to write information on the recording layer or read information from the recording layer. The perpendicular magnetic recording head includes: the perpendicular magnetic recording medium including a soft magnetic underlayer and the recording layer; a write head including a main pole that applies a magnetic field to, and writes information to, the recording layer and a return pole having a first end which is connected to the main pole and having a second end which is spaced apart from the main pole over an air bearing surface (ABS) of the perpendicular magnetic recording head which is adjacent to the recording layer; and a permanent magnet formed on at least one side of the write head.

Abstract translation: 垂直磁记录头，其在垂直磁记录介质的记录层的轨道方向上移动以在记录层上写入信息或从记录层读取信息。 垂直磁记录头包括：包括软磁性底层和记录层的垂直磁记录介质; 写头，其包括向记录层施加磁场并向其写入信息的主极;以及返回极，其具有连接到主极的第一端，并且具有与主极间隔开的第二端 在与记录层相邻的垂直磁记录头的空气轴承表面（ABS）上; 以及形成在所述写入头的至少一侧上的永磁体。

公开(公告)号：US20090059424A1

公开(公告)日：2009-03-05

申请号：US12111994

申请日：2008-04-30

Applicant: Yong-su Kim ,  Kook-hyun Sunwoo

Inventor： Yong-su Kim ,  Kook-hyun Sunwoo

IPC: G11B5/17 ,  G11B5/82

CPC classification number: G11B5/3133 ,  G11B5/02 ,  G11B5/1278 ,  G11B2005/0002

Abstract: Provided are a magnetic head, a magnetic recording medium, and a magnetic recording apparatus using the magnetic head and the magnetic recording medium. The magnetic head is used for magnetically recording data on a magnetic recording medium and includes a main pole; a return-yoke forming a magnetic path along with the main pole; a coil for inducing a magnetic field to emit a magnetic field for magnetic recording through an end tip of the main pole near a magnetic recording medium; and an insulating layer for electrically insulating the main pole from the return-yoke. The main pole is electrically connected to an external device and generates an electric field for assisting magnetic recording along the magnetic field for magnetic recording. In this structure, the coercive force of a magnetic recording layer can be reduced during magnetic recording so that data can be recorded at high density.

Abstract translation: 提供了磁头，磁记录介质和使用磁头和磁记录介质的磁记录装置。 磁头用于在磁记录介质上磁记录数据，并包括主极; 形成与主极一起形成磁路的返回轭; 线圈，用于通过磁极记录介质附近的主极的末端引起磁场发出用于磁记录的磁场; 以及用于使主极与返回轭电绝缘的绝缘层。 主极电连接到外部装置，并产生用于辅助磁场记录的磁场用于磁记录的电场。 在这种结构中，在磁记录期间可以减小磁记录层的矫顽力，从而可以以高密度记录数据。

公开(公告)号：US07379276B2

公开(公告)日：2008-05-27

申请号：US10943232

申请日：2004-09-17

Applicant: Young-hun Im ,  Yong-su Kim

Inventor： Young-hun Im ,  Yong-su Kim

IPC: G11B5/39 ,  G11B5/147

CPC classification number: G11B5/1875

Abstract: Provided is a magnetic recording head including a return pole, a writing pole spaced by a predetermined distance from the return pole, an induction writing coil for inducing a magnetic field to be formed across the writing pole, and a plurality of shield layers formed on the writing pole. Accordingly, magnetic fields generated inside and outside the magnetic recording head are prevented from concentrating on the return pole, and information is effectively written on and erased from an information recording media.

Abstract translation: 提供了一种磁记录头，其包括返回极，与返回极隔开预定距离的书写杆，用于引导跨越书写极的磁场的感应写入线圈，以及形成在该磁极上的多个屏蔽层 书写杆 因此，防止在磁记录头内部和外部产生的磁场集中在返回极上，并且有效地将信息从信息记录介质写入并擦除。

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：US20080030909A1

公开(公告)日：2008-02-07

申请号：US11723567

申请日：2007-03-21

Applicant: Hyoung-soo Ko ,  Ju-hwan Jung ,  Yong-su Kim ,  Seung-bum Hong ,  Hong-sik Park

Inventor： Hyoung-soo Ko ,  Ju-hwan Jung ,  Yong-su Kim ,  Seung-bum Hong ,  Hong-sik Park

IPC: G11B5/33 ,  G11B5/127 ,  G11B5/82

CPC classification number: G11B9/02 ,  Y10T29/49032

Abstract: An electric field read/write head, a method of manufacturing the same, and a data read/write device including the electric field read/write head are provided. The data read/write device includes an electric field read/write head which reads and writes data to and from a recording medium. The electric field read/write head includes a semiconductor substrate, a resistance region, source and drain regions, and a write electrode. The semiconductor substrate includes a first surface and a second surface with adjoining edges. The resistance region is formed to extend from a central portion at one end of the first surface to the second surface. The source region and the drain region are formed at either side of the resistance region and are separated from the first surface. The write electrode is formed on the resistance region with an insulating layer interposed between the write electrode and the resistance region.

Abstract translation: 提供电场读/写头，其制造方法以及包括电场读/写头的数据读/写装置。 数据读/写装置包括从记录介质读取和写入数据的电场读/写头。 电场读/写头包括半导体衬底，电阻区，源极和漏极区以及写入电极。 半导体衬底包括具有相邻边缘的第一表面和第二表面。 电阻区域形成为从第一表面的一端的中心部分延伸到第二表面。 源极区域和漏极区域形成在电阻区域的两侧并且与第一表面分离。 写电极形成在电阻区上，绝缘层位于写电极和电阻区之间。

公开(公告)号：US20070206405A1

公开(公告)日：2007-09-06

申请号：US11347228

申请日：2006-02-06

Applicant: Chee-kheng Lim ,  Yong-su Kim

Inventor： Chee-kheng Lim ,  Yong-su Kim

IPC: G11C11/00

CPC classification number: H01L43/08 ,  B82Y10/00 ,  G11C11/16 ,  G11C11/5607 ,  H01L27/228

Abstract: A multi-bit magnetic memory device using a spin-polarized current and methods of manufacturing and operating the same. The magnetic memory device includes a switching device and a magnetic storage node connected to the switching device, wherein the magnetic storage node includes a first magnetic layer, a second magnetic layer and a free magnetic layer which are vertically and separately disposed from one another. The first and second magnetic layer have transmission characteristics opposite to each other for spin-polarized electrons, and have magnetic polarizations that are opposite to each other. The free magnetic layer may include first and second free magnetic layers, which are separately disposed from each other. The magnetic storage node may further include third and fourth magnetic layers that are separately disposed between the first and second free magnetic layers.

Abstract translation: 使用自旋极化电流的多位磁存储器件及其制造和操作方法。 磁存储器件包括连接到开关器件的开关器件和磁存储节点，其中磁存储节点包括彼此垂直且分开设置的第一磁性层，第二磁性层和自由磁性层。 第一和第二磁性层对于自旋极化电子具有彼此相反的传输特性，并且具有彼此相反的磁极化。 自由磁性层可以包括彼此分开设置的第一和第二自由磁性层。 磁存储节点还可以包括分开设置在第一和第二自由磁性层之间的第三和第四磁性层。