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31. 发明授权

US08846219B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US08846219B2
公开(公告)日：2014-09-30
申请号：US13417198
申请日：2012-03-09
申请人： Yasuaki Hozumi
发明人： Yasuaki Hozumi
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/65
摘要： This document discloses a perpendicular magnetic recording medium in which the magnetic anisotropy of a magnetic recording layer is raised and the thermal stability of recorded signals is improved without changing the conventional stacked configuration. A perpendicular magnetic recording medium is formed by stacking at least an intermediate layer, a second underlayer, and a magnetic recording layer in this order on a nonmagnetic base. The intermediate layer is either a single layer of Ru or a Ru-based alloy, or a stacked structure of a nonmagnetic alloy film including Co and Cr and a film of Ru or a Ru-based alloy. The second underlayer includes Co in the range from 30 at % to 75 at %, Cr in the range from 20 at % to 60 at %, and W in the range from 0.1 at % to 10 at %, and has a thickness in the range from 0.1 nm to 1.0 nm.
摘要翻译：该文献公开了一种垂直磁记录介质，其中提高了磁记录层的磁各向异性，并且改进了记录信号的热稳定性，而不改变传统的堆叠结构。通过在非磁性基底上依次层叠至少中间层，第二底层和磁记录层来形成垂直磁记录介质。中间层是单层Ru或Ru-基合金，或包含Co和Cr的非磁性合金膜和Ru或Ru-基合金的膜的堆叠结构。第二底层包括Co在30at％至75at％的范围内，Cr在20at％至60at％的范围内，W在0.1at％至10at％的范围内，并且具有范围为0.1nm至1.0nm。

32. 发明授权

US08771849B2 Perpendicular magnetic recording medium and magnetic recording/reproducing apparatus using the same 有权
标题翻译：垂直磁记录介质和使用其的磁记录/再现装置
公开(公告)号：US08771849B2
公开(公告)日：2014-07-08
申请号：US12288654
申请日：2008-10-21
申请人： Hiroaki Nemoto , Ikuko Takekuma , Ichiro Tamai , Yoshiyuki Hirayama
发明人： Hiroaki Nemoto , Ikuko Takekuma , Ichiro Tamai , Yoshiyuki Hirayama
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/65 , G11B5/66 , G11B5/667 , G11B5/7325
摘要： Embodiments of the present invention help allow accurate control of the magnetization reversal in a magnetic recording layer in small reversal units, whereby high-density recording can be achieved. According to one embodiment, by forming an intermediate layer having a granular structure similar to that of the magnetic recording layer below the magnetic recording layer, a continuous crystal grain boundary is formed at the interface between the magnetic recording layer and the intermediate layer, thereby preventing incomplete formation of the crystal grain boundary found in the initial growth layer of the magnetic recording layer. The intermediate layer comprises a non-magnetic alloy comprising Co and Cr as its main components and an oxide such as Al, Cr, Hf. Mg, Nb, Si, Ta, Ti and Zr. Further, the average content of the oxygen element in the intermediate layer is in the range from 6 at % to 20 at %.
摘要翻译：本发明的实施例有助于在小的反转单元中精确地控制磁记录层中的磁化反转，由此可以实现高密度记录。根据一个实施例，通过在磁记录层下方形成具有类似于磁记录层的颗粒结构的中间层，在磁记录层和中间层之间的界面处形成连续的晶界，从而防止在磁记录层的初始生长层中发现的晶界的不完全的形成。中间层包括以Co和Cr为主要成分的非磁性合金和Al，Cr，Hf等氧化物。 Mg，Nb，Si，Ta，Ti和Zr。此外，中间层中的氧元素的平均含量在6at％至20at％的范围内。

33. 发明申请

US20140186658A1 Interlayer comprising chromium-containing alloy 有权
标题翻译：夹层包含含铬合金
公开(公告)号：US20140186658A1
公开(公告)日：2014-07-03
申请号：US14159362
申请日：2014-01-20
申请人： SEAGATE TECHNOLOGY LLC
发明人： Shoutao Wang , Weilu Xu , Chung-hee Chang , Xiaoguang Ma , Mark Johnson , Abebe Hailu , Charles Chen
IPC分类号： G11B5/738 , G11B5/84
CPC分类号： G11B5/84 , G11B5/732 , G11B5/7325 , G11B5/738
摘要： An apparatus and method are provided for improving perpendicular magnetic recording media. The present invention provides media, and a method of fabricating media in a cost-effective manner, with a reduced ruthenium (Ru) content interlayer structure, while meeting media performance requirements. A perpendicular magnetic recording medium is provided comprising a non-magnetic substrate having a surface, and a layer stack situated on the substrate surface. The layer stack comprises, in overlying sequence from the substrate surface a magnetically soft underlayer; an amorphous or crystalline, non-magnetic seed layer; an interlayer structure for crystallographically orienting a layer of a perpendicular magnetic recording material situated on the underlayer; and at least one crystallographically oriented, magnetically hard, perpendicular magnetic recording layer situated on the interlayer structure. The interlayer structure is a stacked structure comprising, in overlying sequence: a chromium alloy situated on the seed layer; and an upper interlayer situated on the chromium alloy.
摘要翻译：提供了用于改进垂直磁记录介质的装置和方法。本发明在满足介质性能要求的同时，提供了具有降低的钌（Ru）含量层间结构的以成本有效的方式制造介质的介质和方法。提供了包括具有表面的非磁性基底和位于基底表面上的层叠的垂直磁记录介质。层叠体以从衬底表面的叠加顺序包括一个软磁软底层; 无定形或结晶的非磁性种子层; 用于晶体取向位于底层上的垂直磁记录材料层的层间结构; 以及位于层间结构上的至少一个晶体取向的磁性硬的垂直磁记录层。层间结构是层叠结构，其叠加顺序为：位于种子层上的铬合金; 和位于铬合金上的上层。

34. 发明授权

US08748018B2 Patterned perpendicular magnetic recording medium with data islands having a flux channeling layer below the recording layer 有权
标题翻译：具有数据岛的图案化垂直磁记录介质，其具有在记录层下方的通量沟道层
公开(公告)号：US08748018B2
公开(公告)日：2014-06-10
申请号：US12577344
申请日：2009-10-12
申请人： Thomas Hauet , Olav Hellwig , Kentaro Takano
发明人： Thomas Hauet , Olav Hellwig , Kentaro Takano
IPC分类号： G11B5/66
CPC分类号： G11B5/855 , B82Y10/00 , G11B5/012 , G11B5/66 , G11B5/7325 , G11B5/746 , G11B5/82
摘要： A patterned perpendicular magnetic recording medium, such as a disk for use in hard disk drives, has a flux channeling layer (FCL) located below the recording layer (RL) in each of the discrete data islands. The disk includes a substrate, a soft underlayer (SUL) of soft magnetically permeable material on the substrate, and a nonmagnetic exchange break layer (EBL) on the SUL. A nonmagnetic separation layer (SL) is located between the FCL and the RL in the islands. The FCL has an anisotropy field substantially lower than the anisotropy field of the RL, and a magnetization equal to or higher than the magnetization of the RL. The FCL is saturated at a much lower field than the RL and thus channels the magnetic flux from the write head through the island positions. The dipolar fields from the RL above the FCL polarize the magnetization of the FCL parallel to the magnetization direction of the RL in the absence of an external field, to thereby enhance the readback signal.
摘要翻译：图形化的垂直磁记录介质，例如用于硬盘驱动器的盘，在每个离散数据岛中具有位于记录层（RL）下方的通量沟道层（FCL）。盘包括衬底，衬底上的柔软的可渗透材料的软底层（SUL）和SUL上的非磁性交换断裂层（EBL）。非磁性分离层（SL）位于FCL和岛之间的RL之间。 FCL具有大大低于RL的各向异性场的各向异性场，以及等于或高于RL的磁化强度的磁化强度。 FCL在比RL低得多的场处饱和，从而将来自写入头的磁通量通过岛位置。来自FCL以上的RL的偶极场在没有外部场的情况下使FCL的磁化平行于RL的磁化方向偏振，从而增强回读信号。

35. 发明申请

US20140104997A1 MAGNETIC RECORDING MEDIUM, METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING AND REPRODUCING DEVICE 审中-公开
标题翻译：磁记录介质，制造磁记录介质的方法和磁记录和再现装置
公开(公告)号：US20140104997A1
公开(公告)日：2014-04-17
申请号：US14051005
申请日：2013-10-10
申请人： SHOWA DENKO K.K. , TOHOKU UNIVERSITY , KABUSHIKI KAISHA TOSHIBA
发明人： Hisato SHIBATA , Ken INOUE , Tsubasa OKADA , Gohei KUROKAWA , Shin SAITO , Shintaro HINATA , Migaku TAKAHASHI , Tomoyuki MAEDA , Yosuke ISOWAKI , Akira KIKITSU
IPC分类号： G11B5/738
CPC分类号： G11B5/73 , G11B5/7325 , G11B5/84
摘要： A magnetic recording medium is disclosed in which, on a non-magnetic substrate 1, at least an orientation control layer that controls orientation of a layer immediately above and a vertical magnetic layer in which an easy axis of magnetization is mainly vertically oriented with respect to the non-magnetic substrate are laminated. The orientation control layer includes an Ru-containing layer containing Ru or Ru alloy, and a diffusion prevention layer provided on the Ru-containing layer on the side of the vertical magnetic layer, is made of a material having a melting point of 1500° C. or higher and 4215° C. or lower and formed by a covalent bond or an ionic bond, and prevents thermal diffusion of Ru atoms of the Ru-containing layer. The vertical magnetic layer has a crystalline structure of crystal grains continuously formed from the Ru-containing layer with the diffusion prevention layer interposed therebetween, and includes a columnar crystal continuously formed in a thickness direction together with the crystal grains.
摘要翻译：公开了一种磁记录介质，其中，在非磁性基板1上，至少一个控制刚刚上方的层的取向的取向控制层和易磁化轴主要垂直于相对于非磁性基板层压。取向控制层包括含有Ru或Ru合金的含Ru层，并且设置在垂直磁性层侧的Ru含有层上的扩散防止层由熔点为1500℃的材料制成或更高和4215℃或更低，并且通过共价键或离子键形成，并且防止含Ru层的Ru原子的热扩散。垂直磁性层具有由含Ru扩散层连续地形成的晶粒的结晶结构，其间具有扩散防止层，并且包括与晶粒一起在厚度方向上连续形成的柱状晶体。

36. 发明申请

US20140104724A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM AND MAGNETIC STORAGE DEVICE 审中-公开
标题翻译：全能磁记录介质和磁存储器件
公开(公告)号：US20140104724A1
公开(公告)日：2014-04-17
申请号：US14055012
申请日：2013-10-16
申请人： HITACHI. LTD.
发明人： Yoshihiro SHIROISHI , Yoshiyuki HIRAYAMA , Hiroshi FUKUDA , Yo SATO
IPC分类号： G11B5/65
CPC分类号： G11B5/65 , G11B5/66 , G11B5/7325 , G11B5/851
摘要： Provided are a magnetic recording medium suitable for use with a microwave assisted magnetic recording head and suitable for such recording and a method for manufacturing the same. A perpendicular magnetic recording medium includes a recording layer including a plurality of magnetic layers. A magnetic layer as an uppermost layer of the recording layer includes three or more of sub-layers each having thickness of more than 0 and 1 nm or less, the sub-layers including a first sub-layer and a second sub-layer to make up a lamination unit layer, the first sub-layer including, as a major element, 50% or more of at least one type of element selected from the group consisting of Co, Fe and Ni, the second sub-layer including, as a major element, an element different from the major element of the first sub-layer. The magnetic layer as the uppermost layer includes a plurality of lamination unit layers having different composition of sub-layers at least one sub-layer among the lamination unit layers and/or a different film thickness of sub-layers at least one sub-layer among the lamination unit layers.
摘要翻译：提供一种适用于微波辅助磁记录头并适用于这种记录的磁记录介质及其制造方法。垂直磁记录介质包括包含多个磁性层的记录层。作为记录层的最上层的磁性层包括三个以上的各自具有大于0和1nm或更小的厚度的子层，子层包括第一子层和第二子层，以形成层叠单元层，第一子层作为主要元素包含选自Co，Fe和Ni中的至少一种类型的元素的50％以上，第二子层包含作为主要元素，与第一子层的主要元素不同的元素。作为最上层的磁性层包括多个叠层单元层，层叠单元层中的至少一个子层的子层组成不同，和/或子层的不同膜厚在至少一个子层之间，层压单元层。

37. 发明授权

US08697261B2 Perpendicular magnetic recording medium 有权
标题翻译：垂直磁记录介质
公开(公告)号：US08697261B2
公开(公告)日：2014-04-15
申请号：US12934979
申请日：2009-03-25
申请人： Teiichiro Umezawa
发明人： Teiichiro Umezawa
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/66
摘要： An object of the present invention is to increase an electromagnetic transducing characteristic (in particular, SNR) by further promoting separation and isolation of magnetic grains of a magnetic recording layer (122) in a perpendicular magnetic recording medium (100). Thus, a typical structure of the perpendicular magnetic recording medium (100) according to the present invention includes, on a substrate (110), at least a non-magnetic granular layer (120) having a granular structure in which a grain boundary part including one or a plurality of oxides is formed between non-magnetic grains each continuously grown in a columnar shape and a magnetic recording layer (122) formed continuously with the non-magnetic granular layer (120) and having a granular structure in which a grain boundary part including one or a plurality of oxides is formed between magnetic grains continuously grown in a columnar shape in this order, and at least one oxide included in the grain boundary part of the non-magnetic granular layer (120) and at least one oxide included in the grain boundary part of the magnetic recording layer (122) are oxides of a same composition.
摘要翻译：本发明的目的是通过进一步促进垂直磁记录介质（100）中的磁记录层（122）的磁性颗粒的分离和隔离来增加电磁感应特性（特别是SNR）。因此，根据本发明的垂直磁记录介质（100）的典型结构在基板（110）上至少包括具有颗粒结构的非磁性颗粒层（120），其中包括在圆柱状连续生长的非磁性颗粒和与非磁性颗粒层（120）连续形成的磁记录层（122）之间形成一个或多个氧化物，并且具有颗粒结构，其中晶界依次形成以柱状连续生长的磁性颗粒和包含在非磁性粒状层（120）的晶界部分中的至少一种氧化物和包含至少一种氧化物的包含一种或多种氧化物的部分在磁记录层（122）的晶界部分是具有相同组成的氧化物。

38. 发明授权

US08668953B1 Annealing process for electroless coated disks for high temperature applications 失效
标题翻译：用于高温应用的无电镀覆膜的退火工艺
公开(公告)号：US08668953B1
公开(公告)日：2014-03-11
申请号：US12979623
申请日：2010-12-28
申请人： Dorothea Buechel-Rimmel
发明人： Dorothea Buechel-Rimmel
IPC分类号： B05D3/12 , B05D5/12 , G11B5/706
CPC分类号： G11B5/8404 , C23C18/1637 , C23C18/1651 , C23C18/1689 , C23C18/1692 , C23C18/50 , C23C18/54 , G11B5/7325 , G11B5/858
摘要： A method of manufacturing a disk for a magnetic storage device is provided. The method comprises electroless plating a coating layer over a substrate to produce the disk, the coating layer forming an exterior surface of coating over the substrate, and annealing the coating layer using a heating source, wherein heat radiating from the heating source is directionally focused onto the exterior surface before the exterior surface is polished.
摘要翻译：提供一种制造用于磁存储装置的盘的方法。该方法包括在衬底上无电镀覆涂层以产生盘，涂层在衬底上形成涂层的外表面，并且使用加热源对涂层进行退火，其中从加热源辐射的热量定向聚焦到在外表面之前的外表面被抛光。

39. 发明授权

US08647755B2 Perpendicular magnetic recording medium and manufacturing method thereof 有权
标题翻译：垂直磁记录介质及其制造方法
公开(公告)号：US08647755B2
公开(公告)日：2014-02-11
申请号：US12150165
申请日：2008-04-25
申请人： Tomoo Yamamoto , Joe Inagaki , Takuya Kojima , Das Sarbanoo
发明人： Tomoo Yamamoto , Joe Inagaki , Takuya Kojima , Das Sarbanoo
IPC分类号： G11B5/66
CPC分类号： G11B5/8404 , C23C14/205 , G11B5/65 , G11B5/66 , G11B5/732 , G11B5/7325 , G11B5/851
摘要： Embodiments of the present invention provide a perpendicular magnetic recording medium with less medium noise, excellent overwrite characteristics, and scratch resistance. According to one embodiment, when an Ar gas with addition of a micro-amount of oxygen is used upon forming an upper Ru intermediate layer, a micro-structure of a magnetic layer formed thereon can be formed in a state where no magnetic oxide region is segregated and the magnetic crystal grains are isolated. In this case, a gas pressure for forming the upper intermediate layer is set to 5 Pa or more and 12 Pa or less which is a region much higher compared with 0.5 Pa or more and 1 Pa for the lower Ru intermediate layer. Since writing by a head becomes difficult remarkably in the perpendicular magnetic medium having magnetic crystal grains promoted for isolation, a second magnetic layer for facilitating magnetization reversal by lowering the oxide concentration and somewhat strengthening coupling between particles only in the magnetic layer on the side of the surface is formed to a layer above the first magnetic layer as a main part.
摘要翻译：本发明的实施例提供了具有较少中等噪声，优异的重写特性和耐擦伤性的垂直磁记录介质。根据一个实施方案，当形成上Ru中间层时使用添加微量氧的Ar气体时，可以在不形成氧化物区域的状态下形成其上形成的磁性层的微结构分离，磁性晶粒分离。在这种情况下，用于形成上部中间层的气体压力被设定为5Pa以上且12Pa以下，与下述Ru中间层的0.5Pa以上且1Pa相比，区域高得多。由于在具有促进隔离的磁性晶粒的垂直磁性介质中，头部的写入变得困难，所以通过降低氧化物浓度促进磁化反转的第二磁性层和仅仅在表面形成为第一磁性层上方的层作为主要部分。

40. 发明申请

US20140030552A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM 有权
标题翻译：全能磁记录介质
公开(公告)号：US20140030552A1
公开(公告)日：2014-01-30
申请号：US13909609
申请日：2013-06-04
申请人： FUJI ELECTRIC CO., LTD.
发明人： Yuki INABA , Takayuki HIROSE
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/65 , G11B5/7325
摘要： A perpendicular magnetic recording medium is disclosed. The perpendicular magnetic recording medium includes a first layer, and a second layer positioned immediately below the first layer. Among the materials in the first layer and the second layer, if the interface energy when two different materials—material a and material b—are in contact is defined as Ei(a//b), the surface energy when material a exists independently is defined as Es(a), and the energy resulting by subtracting the sum of the respective surface energies (ΣEs) from the interface energy is defined as G(a//b), then when G(1//3)
摘要翻译：公开了一种垂直磁记录介质。垂直磁记录介质包括第一层和位于第一层正下方的第二层。在第一层和第二层的材料中，如果两种不同材料 - 材料a和材料b-接触时的界面能量被定义为Ei（a // b），则材料a独立存在时的表面能是定义为Es（a），并且通过从界面能量减去各个表面能（SigmaE）的和所产生的能量被定义为G（a // b），则当G（1 // 3）

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