公开(公告)号：US06921585B2

公开(公告)日：2005-07-26

申请号：US10146269

申请日：2002-05-15

Applicant: Joseph H. Sexton

Inventor： Joseph H. Sexton

IPC: G11B5/66 ,  G11B5/73 ,  G11B5/673

CPC classification number: G11B5/732 ,  G11B5/66 ,  G11B5/7325 ,  Y10T428/12868 ,  Y10T428/12931 ,  Y10T428/24975

Abstract: Perpendicular magnetic media are described for use in magnetic recording and data storage. For example, a magnetic medium may include a substrate, an amorphous underlayer formed over the substrate, a seed layer formed over the amorphous underlayer, and a multi-layered magnetic stack formed over the seed layer. In this manner, high perpendicular magnetic anisotropy can be achieved and storage densities can be increased.

Abstract translation: 描述了用于磁记录和数据存储的垂直磁介质。 例如，磁介质可以包括衬底，在衬底上形成的无定形底层，形成在无定形底层上的种子层，以及形成在种子层上的多层磁性堆叠。 以这种方式，可以实现高垂直磁各向异性，并且可以增加存储密度。

公开(公告)号：US06869688B2

公开(公告)日：2005-03-22

申请号：US10385622

申请日：2003-03-12

Applicant: Kazuyuki Usuki

Inventor： Kazuyuki Usuki

IPC: G11B5/673 ,  G11B5/00 ,  G11B5/64 ,  G11B5/66 ,  G11B5/72 ,  G11B5/73 ,  G11B5/82 ,  G11B5/70 ,  H01J1/00

CPC classification number: G11B5/7325 ,  G11B5/656 ,  G11B5/66 ,  G11B5/72 ,  G11B5/82 ,  G11B2005/0029 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12861 ,  Y10T428/12875 ,  Y10T428/265 ,  Y10T428/266

Abstract: A magnetic recording medium comprising a flexible support and a magnetic layer selected from a cobalt/palladium multilayer film and a cobalt/platinum multilayer film.

Abstract translation: 一种磁记录介质，包括柔性载体和选自钴/钯多层膜和钴/铂多层膜的磁性层。

公开(公告)号：US08852762B2

公开(公告)日：2014-10-07

申请号：US13562868

申请日：2012-07-31

Applicant: David W. Abraham ,  Michael C. Gaidis ,  Janusz J. Nowak ,  Daniel C. Worledge

Inventor： David W. Abraham ,  Michael C. Gaidis ,  Janusz J. Nowak ,  Daniel C. Worledge

IPC: G11B5/66 ,  G11B5/65 ,  G11B5/64 ,  G11B5/667 ,  G11B5/673

CPC classification number: G11C11/161 ,  H01L43/08 ,  H01L43/12 ,  Y10T428/31953 ,  Y10T428/32 ,  Y10T428/325

Abstract: A synthetic antiferromagnetic device includes a reference layer having a first and second ruthenium layer, a magnesium oxide spacer layer disposed on the reference layer, a cobalt iron boron layer disposed on the magnesium oxide spacer layer and a third ruthenium layer disposed on the cobalt iron boron layer, the third ruthenium layer having a thickness of approximately 0 angstroms to 18 angstroms.

Abstract translation: 合成反铁磁装置包括具有第一和第二钌层的参考层，设置在参考层上的氧化镁间隔层，设置在氧化镁间隔层上的钴铁硼层和设置在钴铁硼上的第三钌层 第三钌层的厚度为约0埃至18埃。

公开(公告)号：US20140093747A1

公开(公告)日：2014-04-03

申请号：US13629900

申请日：2012-09-28

Applicant: HGST NETHERLANDS B.V.

Inventor： Ernesto E. Marinero

IPC: G11B5/673 ,  G11B5/84 ,  G11B5/66

CPC classification number: G11B5/66 ,  G11B5/7325 ,  G11B5/855

Abstract: A magnetic recording medium includes a substrate and a plurality of anisotropic magnetic layers applied over the substrate. The medium further includes at least one anti-ferromagnetic coupling layer between two adjacent anisotropic magnetic layers of the plurality of anisotropic magnetic layers.

Abstract translation: 磁记录介质包括衬底和施加在衬底上的多个各向异性磁性层。 所述介质还包括在所述多个各向异性磁性层的两个相邻各向异性磁性层之间的至少一个反铁磁耦​​合层。

公开(公告)号：US20120320666A1

公开(公告)日：2012-12-20

申请号：US13578866

申请日：2011-02-14

Applicant: Hideo Ohno ,  Shoji Ikeda ,  Fumihiro Matsukura ,  Masaki Endoh ,  Shun Kanai ,  Katsuya Miura ,  Hiroyuki Yamamoto

Inventor： Hideo Ohno ,  Shoji Ikeda ,  Fumihiro Matsukura ,  Masaki Endoh ,  Shun Kanai ,  Katsuya Miura ,  Hiroyuki Yamamoto

IPC: G11C11/15 ,  G11B5/673

CPC classification number: H01L43/08 ,  G11C11/161 ,  H01L27/228 ,  H01L43/10 ,  H01L43/12

Abstract: There is provided a magnetoresistive element whose magnetization direction is stable in a direction perpendicular to the film surface and whose magnetoresistance ratio is controlled, as well as magnetic memory using such a magnetoresistive element. By having the material of a ferromagnetic layer forming the magnetoresistive element comprise a ferromagnetic material containing at least one type of 3d transition metal, or a Heusler alloy, to control the magnetoresistance ratio, and by controlling the thickness of the ferromagnetic layer on an atomic layer level, the magnetization direction is changed from being in-plane with the film surface to being perpendicular to the film surface.

Abstract translation: 提供了一种磁阻元件，其磁化方向在垂直于膜表面的方向上是稳定的并且其磁阻比被控制，以及使用这种磁阻元件的磁存储器。 通过使形成磁阻元件的铁磁层的材料包含含有至少一种类型的3d过渡金属或Heusler合金的铁磁材料，以控制磁阻比，并且通过控制原子层上的铁磁层的厚度 磁化方向从膜表面垂直于膜表面进行平面切换。

公开(公告)号：US07625643B2

公开(公告)日：2009-12-01

申请号：US11893253

申请日：2007-08-14

Applicant: Hisashi Umeda ,  Iwao Okamoto

Inventor： Hisashi Umeda ,  Iwao Okamoto

IPC: G11B5/66 ,  G11B5/673

CPC classification number: G11B5/66 ,  G11B5/09 ,  Y10T428/12882 ,  Y10T428/12937 ,  Y10T428/265

Abstract: A magnetic recording medium is provided with a first magnetic layer, a nonmagnetic coupling layer provided on the first magnetic layer, and a second magnetic layer provided on the nonmagnetic coupling layer. The first and second magnetic layers are exchange-coupled, and have magnetization directions which are mutually parallel in a state where no external magnetic field is applied thereto, and the first magnetic layer switches the magnetization direction thereof before the second magnetic layer in response to a recording magnetic field which switches the magnetization directions of the first and second magnetic layers.

Abstract translation: 磁记录介质设置有第一磁性层，设置在第一磁性层上的非磁性耦合层和设置在非磁性耦合层上的第二磁性层。 第一和第二磁性层是交换耦合的，并且在不施加外部磁场的状态下具有相互平行的磁化方向，并且第一磁性层响应于第二磁性层在第二磁性层之前切换其磁化方向 记录切换第一和第二磁性层的磁化方向的磁场。

公开(公告)号：US07378164B1

公开(公告)日：2008-05-27

申请号：US11008712

申请日：2004-12-09

Applicant: Bruce Lairson ,  Mourad Benakli

Inventor： Bruce Lairson ,  Mourad Benakli

IPC: G11B5/667 ,  G11B5/673

CPC classification number: G11B5/667 ,  Y10T428/12465 ,  Y10T428/12757 ,  Y10T428/12861 ,  Y10T428/12931 ,  Y10T428/12937 ,  Y10T428/12944 ,  Y10T428/12951 ,  Y10T428/24967 ,  Y10T428/26

Abstract: A magnetic recording medium having a soft magnetic underlayer structure that includes two soft underlayers is presented. A thick first soft underlayer, disposed on the medium substrate, is made of material which provides a low magnitude of magnetization saturation (Bsat) and high permeability. The first soft underlayer can be formed by plating or high-rate sputtering. The second soft underlayer, which has a lesser thickness than the first soft underlayer, is made of a material which provides a relatively high magnitude of Bsat and low permeability. The second soft underlayer can be formed by low-rate sputtering. The first soft under layer can be isolated from other layers in the medium by an exchange isolation layer. The second soft underlayer can be exchange coupled to a radial exchange pin layer disposed on the exchange isolation layer.

Abstract translation: 本发明提供了一种具有软磁底层结构的磁记录介质，其包括两个软底层。 设置在介质基板上的厚的第一软底层由提供低的磁化饱和度（Bsat）和高磁导率的材料制成。 第一软底层可以通过电镀或高速溅射形成。 具有比第一软底层厚度小的第二软底层由提供相对高的Bsat和低渗透性的材料制成。 第二软底层可以通过低速溅射形成。 第一软底层可以通过交换隔离层与介质中的其它层隔离。 第二软底层可以交换耦合到设置在交换隔离层上的径向交换针层。

公开(公告)号：US20080002296A1

公开(公告)日：2008-01-03

申请号：US11893253

申请日：2007-08-14

Applicant: Hisashi Umeda ,  Iwao Okamoto

Inventor： Hisashi Umeda ,  Iwao Okamoto

IPC: G11B5/66 ,  G11B5/673

CPC classification number: G11B5/66 ,  G11B5/09 ,  Y10T428/12882 ,  Y10T428/12937 ,  Y10T428/265

Abstract: A magnetic recording medium is provided with a first magnetic layer, a nonmagnetic coupling layer provided on the first magnetic layer, and a second magnetic layer provided on the nonmagnetic coupling layer. The first and second magnetic layers are exchange-coupled, and have magnetization directions which are mutually parallel in a state where no external magnetic field is applied thereto, and the first magnetic layer switches the magnetization direction thereof before the second magnetic layer in response to a recording magnetic field which switches the magnetization directions of the first and second magnetic layers.

Abstract translation: 磁记录介质设置有第一磁性层，设置在第一磁性层上的非磁性耦合层和设置在非磁性耦合层上的第二磁性层。 第一和第二磁性层是交换耦合的，并且在不施加外部磁场的状态下具有相互平行的磁化方向，并且第一磁性层响应于第二磁性层在第二磁性层之前切换其磁化方向 记录切换第一和第二磁性层的磁化方向的磁场。

公开(公告)号：US07271984B2

公开(公告)日：2007-09-18

申请号：US10850988

申请日：2004-05-21

Applicant: Hisashi Umeda ,  Iwao Okamoto

Inventor： Hisashi Umeda ,  Iwao Okamoto

IPC: G11B5/66 ,  G11B5/673

CPC classification number: G11B5/66 ,  G11B5/09 ,  Y10T428/12882 ,  Y10T428/12937 ,  Y10T428/265

Abstract: A magnetic recording medium is provided with a first magnetic layer, a nonmagnetic coupling layer provided on the first magnetic layer, and a second magnetic layer provided on the nonmagnetic coupling layer. The first and second magnetic layers are exchange-coupled, and have magnetization directions which are mutually parallel in a state where no external magnetic field is applied thereto, and the first magnetic layer switches the magnetization direction thereof before the second magnetic layer in response to a recording magnetic field which switches the magnetization directions of the first and second magnetic layers.

Abstract translation: 磁记录介质设置有第一磁性层，设置在第一磁性层上的非磁性耦合层和设置在非磁性耦合层上的第二磁性层。 第一和第二磁性层是交换耦合的，并且在不施加外部磁场的状态下具有相互平行的磁化方向，并且第一磁性层响应于第二磁性层在第二磁性层之前切换其磁化方向 记录切换第一和第二磁性层的磁化方向的磁场。

公开(公告)号：US20050249870A1

公开(公告)日：2005-11-10

申请号：US11103653

申请日：2005-04-11

Applicant: Yasuyuki Kawada

Inventor： Yasuyuki Kawada

IPC: G11B5/667 ,  B05D5/12 ,  C23C14/06 ,  C23C14/14 ,  C23C14/18 ,  C23C14/58 ,  G11B5/64 ,  G11B5/66 ,  G11B5/673 ,  G11B5/73 ,  G11B5/738 ,  G11B5/84 ,  G11B5/851

CPC classification number: C23C14/185 ,  C23C14/0658 ,  C23C14/5853 ,  G11B5/65 ,  G11B5/656 ,  G11B5/66 ,  G11B5/667 ,  G11B5/7325 ,  G11B5/8404 ,  G11B5/851

Abstract: A method for producing a magnetic recording medium in which the noise of the magnetic recording medium is reduced and the thermal stability of the recorded magnetization is improved, while enabling easy writing to be carried out by a recording head, is disclosed. The magnetic recording medium of the present invention includes an underlayer having an hcp crystal structure and a magnetic layer produced by a multilayer lamination of Co/Pt or the like. The deposition rate of the underlayer is equal to or lower than 0.7 nm/second. The magnetic layer contains added silicon oxide at 1 to 10 mol %. The present method includes a step for subjecting the surface of the underlayer to Ar gas mixed with oxygen of a mass/flow rate ratio of 1% to 10% under a gas pressure of 0.1 to 10 Pa for 1 to 10 second(s). The magnetic recording medium may include an orientation control layer and a soft magnetic backing layer. Ku, Ku1, and Ku2 are controlled to provide both of thermal stability and easy writing.

Abstract translation: 公开了一种制造磁记录介质的方法，其中磁记录介质的噪声减小并且记录磁化的热稳定性得到改善，同时能够通过记录头进行容易的写入。 本发明的磁记录介质包括具有hcp晶体结构的底层和通过Co / Pt等的多层层叠产生的磁性层。 底层的沉积速度等于或低于0.7nm /秒。 磁性层含有1〜10摩尔％的加成氧化硅。 本方法包括在气体压力为0.1〜10Pa下1〜10秒的质量/流量比为1％〜10％的下层的与Ar混合的Ar气体的表面进行1〜10秒的步骤。 磁记录介质可以包括取向控制层和软磁背衬层。 Ku，Ku＆lt; 1＆gt;和Ku＆amp; 2＆lt; 2＆gt;被控制以提供热稳定性和容易书写。