公开(公告)号：US20040265646A1

公开(公告)日：2004-12-30

申请号：US10856203

申请日：2004-05-28

Applicant: Hitachi Global Storage Technologies Netherlands B.V.

Inventor： Iraj E. Kavosh ,  James Shuster ,  Andrew Ching Tam

IPC: G11B005/64 ,  G11B005/72

CPC classification number: G11B5/72 ,  G11B5/656 ,  G11B5/7379 ,  G11B5/82 ,  G11B5/8408 ,  G11B5/851 ,  Y10T428/24926

Abstract: A magnetic disk is provided which comprises a nonmetallic glass or glass ceramic substrate having one or more under layers, a magnetic layer applied over the under layers, and a hard carbon layer applied over the magnetic layer. A plurality of bumps are formed on the magnetic disk by applying a beam from a near infrared wavelength laser to the surface of the carbon layer.

公开(公告)号：US20040247943A1

公开(公告)日：2004-12-09

申请号：US10776222

申请日：2004-02-12

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Erol Girt ,  Thomas P. Nolan

IPC: G11B005/72

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

Abstract: A perpendicular magnetic recording medium, comprising a non-magnetic interlayer structure selected from the group consisting of: (1) a structure comprising a layer of a fcc Au-containing non-magnetic material having a preferred growth orientation and a layer of a different material in overlying or underlying contact therewith; (2) a structure comprising, in overlying sequence, a layer of a fcc Au-containing non-magnetic material adjacent a magnetically soft underlayer and having a preferred growth orientation; and n layers of a different fcc non-magnetic material having a preferred growth orientation, where nnull1-5; (3) a structure comprising, in overlying sequence, a layer of a fcc Au-containing non-magnetic material adjacent a magnetically soft underlayer and having a preferred growth orientation; and a layer of a hcp non-magnetic material having a preferred growth orientation; (4) a structure comprising, in overlying sequence, a layer of a fcc Au-containing non-magnetic material adjacent a magnetically soft underlayer and having a preferred growth orientation; n layers of a different fcc non-magnetic material having a preferred growth orientation, where nnull1-5; and n layers of a hcp non-magnetic material having a preferred growth orientation, where nnull1-5; and (5) an (fcc)1/(hcp)1/(fcc)2/(hcp)2 structure comprising, in overlying sequence, a first fcc layer (fcc)1, a first hcp layer (hcp)1, a second fcc layer (fcc)2, and a second hcp layer (hcp)2, wherein at least the first fcc layer is an Au-containing non-magnetic material.

Abstract translation: 一种垂直磁记录介质，包括非磁性层间结构，其选自：（1）包含具有<111>优选生长方向的fcc含Au非磁性材料层的结构，以及 与其重叠或潜在接触的不同材料; （2）一种结构，其包括顺序地包含邻近磁软底层并且具有优选生长方向的fcc含Au非磁性材料层; 和n层具有<111>优选生长方向的不同fcc非磁性材料，其中n = 1-5; （3）以叠加顺序包含邻近磁软底层并且具有优选生长方向的fcc含Au非磁性材料层的结构; 以及具有优选生长方向的hcp非磁性材料层; （4）一种结构，其包括以下顺序：包含邻近磁软底层并具有优选生长方向的含Fe含量的非磁性材料层; n层具有<111>优选生长取向的不同fcc非磁性材料，其中n = 1-5; 和n层具有优选生长方向的hcp非磁性材料，其中n = 1-5; 和（5）一个（fcc）1 /（hcp）1 /（fcc）2 /（hcp）2结构，其包括第一fcc层（fcc）1，第一hcp层（hcp）1， 第二fcc层（fcc）2和第二hcp层（hcp）2，其中至少第一fcc层是含Au非磁性材料。

公开(公告)号：US20040224185A1

公开(公告)日：2004-11-11

申请号：US10788259

申请日：2004-02-27

Applicant: KABUSHIKI KAISHA TOSHIBA ,  SHOWA DENKO K.K.

Inventor： Futoshi Nakamura ,  Takashi Hikosaka ,  Soichi Oikawa ,  Takeshi Iwasaki ,  Tomoyuki Maeda ,  Hiroshi Sakai ,  Kenji Shimizu ,  Akira Sakawaki

IPC: G11B005/72

CPC classification number: G11B5/732 ,  G11B5/667 ,  G11B5/7325

Abstract: An orientation control layer having a granular structure is formed between a substrate and magnetic recording layer, contains a base material and grains dispersed in the base material, and having a thickness smaller than a grain size of the grains.

Abstract translation: 具有颗粒结构的取向控制层形成在基板和磁记录层之间，包含分散在基材中的基材和颗粒，其厚度小于晶粒的晶粒尺寸。

公开(公告)号：US20040161578A1

公开(公告)日：2004-08-19

申请号：US10367754

申请日：2003-02-19

Applicant: Seagate Technology LLC

Inventor： Kueir-Weei Chour ,  Weilu Xu ,  Yao-Tzung Shih ,  Kuo-Hsing Hwang ,  Chung Shih

IPC: B32B003/02 ,  G11B007/24 ,  G11B005/72

CPC classification number: G11B11/10584 ,  G11B5/72 ,  G11B5/725 ,  G11B5/8408 ,  G11B11/10586

Abstract: A method of forming a dual-layer protective overcoat system on a surface of a workpiece, the protective overcoat system being abrasion and corrosion resistant and bondable to a lubricant topcoat, comprising sequential steps of: (a) providing a workpiece including a surface; (b) forming a first, bulk layer of a carbon (C) and hydrogen (H)-containing material on the surface of said workpiece, the bulk layer having a rough and porous upper surface; and (c) forming a second, flash layer of a carbon (C) and nitrogen (N)-containing material on the surface of the bulk layer. Embodiments include forming disk-type magnetic and/or magneto-optical (MO) recording media comprising the dual-layer protective overcoat system and a lubricant topcoat layer.

Abstract translation: 一种在工件表面上形成双层保护外涂层系统的方法，所述保护外涂层系统是耐磨蚀和耐腐蚀的并且可粘合到润滑剂面漆上，包括以下顺序步骤：（a）提供包括表面的工件; （b）在所述工件的表面上形成第一碳（C）和含氢（H）的材料的本体层，所述本体层具有粗糙和多孔的上表面; 和（c）在本体层的表面上形成第二个含碳（C）和含氮（N）的材料的闪蒸层。 实施例包括形成包括双层保护外涂层系统和润滑剂顶涂层的盘式磁和/或磁光（MO）记录介质。

公开(公告)号：US20030152811A1

公开(公告)日：2003-08-14

申请号：US10323650

申请日：2002-12-20

Applicant: TDK Corp.

Inventor： Takahiro Hayashi ,  Kunihiro Ueda ,  Kenji Shirasuna

IPC: G11B005/72

CPC classification number: G11B5/725

Abstract: The present invention provides a metal thin film type magnetic recording medium having improved tracking stability and friction stability, by improving the lubricating layer in consideration of the state of forming the lubricating layer in view of the distribution of the lubricant. The magnetic recording medium according to the present invention at least has, in turn, a metal magnetic layer, a protective layer and a lubricating layer on one surface of a nonmagnetic base. The covering ratio of a surface of the lubricating layer with the lubricant is 65-75%. The lubricating layer is produced by applying a mixture of solvents containing at least three solvents selected from three groups, that is from at least one from group (1): ketone solvents having a boiling point of 40-130null C., at least one from group (2): aliphatic hydrocarbon solvents having 4 carbons-10 carbons, and at least one from group (3) alcoholic solvents having equal or less than 6 carbons, the mixture ratio of these solvents of respective groups being preferably selected to be: (1) ketone solvents 5-20% wt.; (2) aliphatic hydrocarbon solvents 10-40% wt.; and (3) alcoholic solvents 40-80% wt.

Abstract translation: 本发明提供一种具有改善的跟踪稳定性和摩擦稳定性的金属薄膜型磁记录介质，考虑到润滑剂的分布，考虑到形成润滑层的状态来改进润滑层。 根据本发明的磁记录介质至少在非磁性基底的一个表面上具有金属磁性层，保护层和润滑层。 润滑剂表面与润滑剂的比例为65-75％。 润滑层是通过将含有至少三种选自三组的溶剂的混合物（即来自组中的至少一种）（1）：沸点为40-130℃的酮溶剂，至少一种 来自基团（2）：具有4个碳原子数为10的碳的脂族烃溶剂和至少一种（3）具有等于或少于6个碳的醇溶剂，各基团的这些溶剂的混合比优选选择为： （1）酮溶剂5-20％wt。 （2）脂肪族烃溶剂10-40％wt。 和（3）醇溶剂40-80重量％

公开(公告)号：US20020114980A1

公开(公告)日：2002-08-22

申请号：US09971193

申请日：2001-10-04

Inventor： Selda Gunsel ,  Clifford Venier ,  I-Ching Chiu

IPC: G11B005/72

CPC classification number: G11B5/725 ,  C07C43/13 ,  C07C69/63 ,  C07C69/88 ,  C07C211/17 ,  C07C233/05 ,  C07C2601/08 ,  C07C2601/10 ,  C07F9/091 ,  C07F9/1651 ,  Y10T428/1164

Abstract: A magnetic recording medium and method for forming the magnetic recording medium are described. The magnetic recording medium includes a magnetic layer formed on a non-magnetic support, and a lubricant layer over the magnetic layer. The lubricant layer includes a compound selected from the group consisting of hydrocarbyl-substituted cyclopentanes, hydrocarbyl-substituted cyclopentenes, hydrocarbyl-substituted cyclopentadienes, and mixtures or derivatives thereof and, optionally, one or more additives. The lubricant layer also may be used on a magnetic head for reading and writing information on a magnetic recording medium. The magnetic recording medium and the magnetic head may be used to manufacture computer disk drives, compact disk drives, audio equipment, and video equipment.

Abstract translation: 描述了用于形成磁记录介质的磁记录介质和方法。 磁记录介质包括形成在非磁性载体上的磁性层和在磁性层上的润滑剂层。 润滑剂层包括选自烃基取代的环戊烷，烃基取代的环戊烯，烃基取代的环戊二烯及其混合物或衍生物以及任选的一种或多种添加剂的化合物。 润滑剂层也可以用在磁头上用于在磁记录介质上读写信息。 磁记录介质和磁头可用于制造计算机磁盘驱动器，光盘驱动器，音频设备和视频设备。

公开(公告)号：US20010055702A1

公开(公告)日：2001-12-27

申请号：US09848589

申请日：2001-05-04

Inventor： Po Wen Wang ,  Evan F. Cromwell ,  Olu Atanda

IPC: G11B005/72

CPC classification number: G11B11/10586 ,  G06K19/077 ,  G11B5/653 ,  G11B5/725 ,  G11B5/7325 ,  G11B5/8408 ,  G11B7/122 ,  G11B7/2531 ,  G11B7/2532 ,  G11B7/2534 ,  G11B7/2548 ,  G11B7/2585 ,  G11B11/10584 ,  G11B2007/24306 ,  G11B2007/2432 ,  G11B2007/25417 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25713 ,  G11B2007/25715 ,  Y10S430/146

Abstract: A silicon nitride self-lubricating layer forms the upper surface of a data storage device, such as a rotating disk or a non-rotating memory device, e.g., a credit card-type memory device using a memory strip. The silicon nitride self-lubricating layer can replace the carbon protective overcoat and liquid lubricant used in conventional data storage devices. The silicon nitride self-lubrication layer provides the desired lubrication and protection between the slider and the data storage device. The silicon nitride layer also will not evaporate under high temperatures found in an optical data storage system. In addition, a data storage device may include a plastic polymer layer over which an iron oxide material is deposited. The use of a plastic polymer layer and iron oxide recording layer is particularly advantageous because a low temperature deposition process can be used with the iron oxide material.

Abstract translation: 氮化硅自润滑层形成数据存储装置的上表面，例如旋转盘或非旋转存储装置，例如使用存储条的信用卡型存储装置。 氮化硅自润滑层可以代替常规数据存储装置中使用的碳保护外涂层和液体润滑剂。 氮化硅自润滑层在滑块和数据存储装置之间提供期望的润滑和保护。 氮化硅层也不会在光学数据存储系统中发现的高温下蒸发。 此外，数据存储装置可以包括沉积氧化铁材料的塑料聚合物层。 使用塑料聚合物层和氧化铁记录层是特别有利的，因为可以与氧化铁材料一起使用低温沉积工艺。

公开(公告)号：US20040258925A1

公开(公告)日：2004-12-23

申请号：US10869007

申请日：2004-06-15

Inventor： Li-Lien Lee ,  Shanghsien Rou ,  Romulo Ata

IPC: G11B005/72

CPC classification number: G11B5/732 ,  G11B5/656 ,  G11B5/66 ,  G11B5/7325 ,  G11B5/8404

Abstract: A magnetic recording medium deposited on glass and having an orientation ratio greater than one is disclosed. The magnetic recording medium includes a CoW seedlayer deposited on a circumferentially textured glass substrate. The magnetic recording medium with such a seedlayer can have an OR that is similar or higher than that with a NiP seedlayer. Magnetic recording medium with a CoW seedlayer can produce oriented glass media with orientation ratio OR>1 when sputtered on substrates which have been circumferentially textured before the deposition of the CoW seedlayer. The W content of the CoW seedlayer can range between 30-50 at %. The thickness of the CoW seedlayer can range between 10 null and 200 null. The method for sputter depositing the magnetic recording medium is also disclosed and includes sputter depositing the CoW seedlayer using pure Ar as sputtering gas or using a mixture of Ar and O2, H2O and N2 as sputtering gas.

Abstract translation: 公开了一种沉积在玻璃上并具有大于1的取向比的磁记录介质。 磁记录介质包括沉积在周向织构化的玻璃基板上的CoW种子层。 具有这种种子层的磁记录介质可以具有与NiP种子层相似或更高的OR。 具有CoW种子层的磁记录介质可以在沉积CoW种子层之前沿周向纹理化的基底上溅射时，产生取向比OR> 1的定向玻璃介质。 CoW种子层的W含量可以在30-50at％之间。 CoW种子层的厚度可以在10埃和200埃之间。 还公开了用于溅射沉积磁记录介质的方法，并且包括使用纯Ar作为溅射气体或使用Ar和O 2，H 2 O和N 2的混合物溅射沉积CoW种子层作为溅射气体。

公开(公告)号：US20040247942A1

公开(公告)日：2004-12-09

申请号：US10742100

申请日：2003-12-19

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Zhong (Stella) Wu ,  Raj Nagappan Thangaraj ,  Samuel Dacke Harkness

IPC: G11B005/72

CPC classification number: G11B5/7325 ,  G11B5/656 ,  G11B5/72 ,  G11B5/851

Abstract: A perpendicular recording medium having a magnetic layer comprising cobalt, platinum, and at least one of molybdenum and chromium. In a preferred embodiment, the perpendicular recording medium comprises granular magnetic regions having oxygen-containing grain boundaries. The magnetic layer of the present invention preferably exhibits improved corrosion resistance while maintaining the magnetic properties suitable for high density perpendicular recording.

Abstract translation: 一种具有磁性层的垂直记录介质，包括钴，铂以及钼和铬中的至少一种。 在优选实施例中，垂直记录介质包括具有含氧晶界的粒状磁区。 本发明的磁性层优选具有改进的耐腐蚀性，同时保持适合于高密度垂直记录的磁特性。

公开(公告)号：US20030232220A1

公开(公告)日：2003-12-18

申请号：US10371596

申请日：2003-02-20

Applicant: Hitachi, Ltd.

Inventor： Toru Yatsue

IPC: G11B005/72

CPC classification number: C10M107/38 ,  C08G65/007 ,  C08G65/30 ,  C08G65/46 ,  C10M2213/0606 ,  C10N2240/204 ,  G11B5/725 ,  G11B5/8408

Abstract: The disclosed invention provides a high-reliability magnetic recording apparatus, magnetic recording medium, and a method of manufacturing such a medium in a high-density magnetic recording apparatus which comprises a magnetic disk revolving at a high speed and a magnetic head which flies as low as possible over the magnetic disk. A lubricant layer formed on the outermost surface of a magnetic recording medium is constituted by a lubricant which comprises fluoropolyether as the principal ingredient. The fluoropolyether lubricant is characterized in that alcohol hydration distribution which corresponds to difference between the greatest and smallest alcohol valences among the component molecules of the fluoropolyether is adjusted to 0.48 or less and an average alcohol valence among the component molecules is adjusted to fall within a range of 3.00 to 3.91.

Abstract translation: 所公开的发明提供了一种高可靠性磁记录装置，磁记录介质和在高密度磁记录装置中制造这种介质的方法，该高密度磁记录装置包括高速旋转的磁盘和飞低的磁头 尽可能在磁盘上。 形成在磁记录介质的最表面上的润滑剂层由以氟聚醚为主要成分的润滑剂构成。 氟聚醚润滑剂的特征在于，将与氟聚醚的组分分子中的最大和最小醇价之间的差异对应的醇水合分布调节至0.48以下，并将成分分子中的平均醇价调节至范围内 为3.00至3.91。