公开(公告)号：US07998912B2

公开(公告)日：2011-08-16

申请号：US12559450

申请日：2009-09-14

申请人： Shaun H. Chen ,  Yasuo Sakane ,  Henry S. Nishihira ,  Chi Kong Kwok ,  The V. Tran ,  Bing-Shiuan Chang

发明人： Shaun H. Chen ,  Yasuo Sakane ,  Henry S. Nishihira ,  Chi Kong Kwok ,  The V. Tran ,  Bing-Shiuan Chang

IPC分类号： C10M157/02 ,  C10M157/04 ,  C10M157/08 ,  G11B5/65 ,  G11B5/725 ,  G11B5/72

CPC分类号： G11B5/725 ,  C10M157/10 ,  C10M177/00 ,  C10M2213/0606 ,  C10M2225/0405 ,  C10N2240/204 ,  C10N2250/14 ,  C10N2280/00

摘要： A composite lubricant for recording disk media, a recording disk media including a layer of the composite lubricant, and method of manufacturing the same are described. The composite lubricant may include a non-phosphazene component and a phosphazene component where the non-phosphazene component is a difunctional perfluoropolyether compound terminated with first and second polar end groups, the first polar end group comprising a first number of hydroxyls and the second polar end includes a second number of hydroxyls, greater than the first number of hydroxyls. The phosphazene component may be a difunctional perfluoropolyether compound terminated with a phosphazene functional group and with a third polar end group, the third polar end group comprising a third number of hydroxyls equal to the second number of hydroxyls.

摘要翻译： 描述了用于记录盘介质的复合润滑剂，包括复合润滑剂层的记录盘介质及其制造方法。 复合润滑剂可以包括非磷腈成分和磷腈成分，其中非磷腈成分是以第一和第二极性端基封端的双官能全氟聚醚化合物，第一极端基包含第一数目的羟基，第二极端 包括第二数量的羟基，大于第一数目的羟基。 磷腈组分可以是用磷腈官能团封端的二官能全氟聚醚化合物，并且具有第三极性端基，第三极性端基包含等于第二数量羟基的第三数量的羟基。

公开(公告)号：US07976966B2

公开(公告)日：2011-07-12

申请号：US12700739

申请日：2010-02-05

申请人： Tyson York Winarski

发明人： Tyson York Winarski

IPC分类号： G11B5/65

CPC分类号： G11B5/65 ,  B82Y10/00 ,  G11B5/54 ,  G11B5/706 ,  Y10S977/742 ,  Y10S977/773

摘要： A magnetic storage medium is formed of magnetic nanoparticles that are encapsulated within carbon nanotubes, which are arranged in a substrate to facilitate the reading and writing of information by a read/write head. The substrate may be flexible or rigid. Information is stored on the magnetic nanoparticles via the read/write head of a storage device. These magnetic nanoparticles are arranged into data tracks to store information through encapsulation within the carbon nanotubes. As carbon nanotubes are bendable, the carbon nanotubes may be arranged on flexible or rigid substrates, such as a polymer tape or disk for flexible media, or a glass substrate for rigid disk. A polymer may assist holding the nano-particle filled carbon-tubes to the substrate.

摘要翻译： 磁性存储介质由包含在碳纳米管内的磁性纳米颗粒形成，其被布置在衬底中以便于读/写头读取和写入信息。 衬底可以是柔性的或刚性的。 信息经由存储装置的读/写头存储在磁性纳米粒子上。 这些磁性纳米颗粒被布置成数据轨道，以通过在碳纳米管内的封装来存储信息。 由于碳纳米管是可弯曲的，碳纳米管可以布置在柔性或刚性基底上，例如用于柔性介质的聚合物带或盘，或用于刚性盘的玻璃基底。 聚合物可以有助于将纳米颗粒填充的碳管保持在基底上。

公开(公告)号：US20110104516A1

公开(公告)日：2011-05-05

申请号：US12934979

申请日：2009-03-25

申请人： Teiichiro Umezawa

发明人： Teiichiro Umezawa

IPC分类号： G11B5/65

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。

公开(公告)号：US20110097604A1

公开(公告)日：2011-04-28

申请号：US12935813

申请日：2009-03-30

申请人： Takahiro Onoue

发明人： Takahiro Onoue

IPC分类号： G11B5/66 ,  G11B5/65

CPC分类号： G11B5/66 ,  G11B5/65

摘要： An object of the present invention is to provide a perpendicular magnetic recording medium capable of reducing noise in an electromagnetic transducing characteristic in a configuration including a magnetic recording layer of a granular structure containing Co and an auxiliary recording layer. The perpendicular magnetic recording medium of the present invention includes: on a non-magnetic substrate, a first magnetic recording layer 20a of a granular structure in which a non-magnetic grain boundary part is provided between magnetic grains in a columnar shape containing at least Co; a non-magnetic layer 22 provided on the first magnetic recording layer 20a; a second magnetic recording layer 20b of a granular structure in which a non-magnetic grain boundary part is provided between magnetic grains in a columnar shape containing Co provided on the non-magnetic layer 22; and an auxiliary recording layer 24 provided on the second magnetic recording layer 20b.

摘要翻译： 本发明的目的是提供一种垂直磁记录介质，其能够降低包括含有Co和辅助记录层的粒状结构的磁记录层的结构中的电磁感应特性中的噪声。 本发明的垂直磁记录介质包括：在非磁性基板上的第一磁性记录层20a，其中非磁性晶界部分设置在至少包含Co的柱状的磁性颗粒之间 ; 设置在第一磁记录层20a上的非磁性层22; 颗粒结构的第二磁记录层20b，其中非磁性晶界部分设置在包含设置在非磁性层22上的Co的圆柱形状的磁性颗粒之间; 以及设置在第二磁记录层20b上的辅助记录层24。

公开(公告)号：US07879470B2

公开(公告)日：2011-02-01

申请号：US11940960

申请日：2007-11-15

申请人： Qing Dai ,  Hoa V. Do ,  Bruno Marchon ,  Kentaro Takano

发明人： Qing Dai ,  Hoa V. Do ,  Bruno Marchon ,  Kentaro Takano

IPC分类号： G11B5/65

CPC分类号： G11B5/65

摘要： A method for improving magnetic grain segregation in perpendicular recording media includes providing a substrate comprising a rigid support structure, depositing a soft underlayer on top of the substrate depositing an intermediate layer on top of the soft underlayer, providing a plurality of prospective segregants, determining the surface energies and the heat of formation of the prospective segregants and selecting the prospective segregant with a low surface energy and a high heat of formation. The method also includes providing at least one layer with surface energies progressively increasing to minimize the difference between the surface energy of a carbon overcoat and the segregant.

摘要翻译： 用于改善垂直记录介质中的磁晶粒偏析的方法包括提供包括刚性支撑结构的基底，在所述基底的顶部上沉积软底层，在所述软底层的顶部上沉积中间层，提供多个预期分离子， 表面能和前瞻性分离物的形成热量，并选择具有低表面能和高热量形成的前瞻性分离体。 该方法还包括提供至少一层具有逐渐增加的表面能，以最小化碳外涂层和分离器的表面能之间的差异。

公开(公告)号：US20110014498A1

公开(公告)日：2011-01-20

申请号：US12666552

申请日：2008-09-24

申请人： Akira Shimada ,  Ito Nakamura

发明人： Akira Shimada ,  Ito Nakamura

IPC分类号： G11B5/725 ,  G11B5/65 ,  G11B5/84

CPC分类号： G11B5/72 ,  G11B5/8408

摘要： This invention provides a magnetic disk which can satisfactorily suppress the elution of internal components from an end face of a magnetic disk, and corrosion damage. The magnetic disk comprises a disk substrate, and a thin film including a magnetic layer, a carbon-based protective layer, and a lubricating layer provided in that order on the disk substrate. The main surface and the end face of the magnetic disk are covered with the carbonaceous protective layer. The carbon-based protective layer contains nitrogen at a part adjacent to the lubricating layer. The content of nitrogen atoms relative to the content of carbon atoms in the protective layer formed on the end face is equal to or more than the content of nitrogen atoms relative to the content of carbon atoms in the protective layer formed on the main surface.

摘要翻译： 本发明提供一种可以令人满意地抑制内部部件从磁盘的端面的洗脱以及腐蚀损坏的磁盘。 磁盘包括盘基片和在盘基片上依次设置有磁性层，碳基保护层和润滑层的薄膜。 磁盘的主表面和端面被碳质保护层覆盖。 碳基保护层在与润滑层相邻的部分含有氮。 氮原子相对于形成在端面上的保护层中的碳原子含量相对于主表面上形成的保护层中的碳原子含量为氮原子数以上。

公开(公告)号：US07862915B2

公开(公告)日：2011-01-04

申请号：US11640979

申请日：2006-12-19

申请人： Tomoyuki Maeda ,  Migaku Takahashi ,  Masahiro Oka

发明人： Tomoyuki Maeda ,  Migaku Takahashi ,  Masahiro Oka

IPC分类号： G11B5/65

CPC分类号： G11B5/7325 ,  G11B5/1278 ,  G11B5/82

摘要： According to one embodiment, a multilayered underlayer including a first underlayer containing Cu aligned in a (111) plane and a second underlayer formed on the Cu underlayer and containing Cu and nitrogen as main components is formed.

摘要翻译： 根据一个实施方案，形成包含在（111）面中排列的Cu的第一底层和形成在Cu底层上并含有Cu和氮作为主要成分的第二底层的多层底层。

公开(公告)号：US07488429B2

公开(公告)日：2009-02-10

申请号：US11156469

申请日：2005-06-21

申请人： Shuichi Okawa ,  Kazuhiro Hattori ,  Mikiharu Hibi ,  Mitsuru Takai

发明人： Shuichi Okawa ,  Kazuhiro Hattori ,  Mikiharu Hibi ,  Mitsuru Takai

IPC分类号： B44C1/22 ,  G11B5/82 ,  G11B5/65 ,  C03C15/00 ,  C03C25/68 ,  C23F1/00

CPC分类号： B82Y10/00 ,  C23F4/00 ,  G11B5/732 ,  G11B5/7325 ,  G11B5/74 ,  G11B5/743 ,  G11B5/82 ,  G11B5/855

摘要： The recording layer (to-be-etched layer), a main mask layer, and a sub mask layer are formed in this order over a substrate, and the sub mask layer is processed into a predetermined concavo-convex pattern. Next, parts of the main mask layer under the concave portions are removed by reactive ion etching using oxygen or ozone as the reactive gas. Parts of the recording layer under the concave portions are also removed by dry etching, whereby the recording layer is shaped into the concavo-convex pattern. The main mask layer is chiefly made of carbon. The sub mask layer is made of a material having an etching rate lower than that of carbon with respect to the reactive ion etching in the step of processing the main mask layer.

摘要翻译： 在衬底上依次形成记录层（被蚀刻层），主掩模层和副掩模层，并将子掩模层加工成预定的凹凸图案。 接下来，通过使用氧或臭氧作为反应气体的反应离子蚀刻除去凹部下方的主掩模层的一部分。 通过干法蚀刻除去凹部下面的记录层的部分，由此将记录层成形为凹凸图案。 主掩模层主要由碳制成。 在处理主掩模层的步骤中，子掩模层由相对于反应离子蚀刻的蚀刻速率低于碳的蚀刻速率的材料制成。

公开(公告)号：US07476454B2

公开(公告)日：2009-01-13

申请号：US11066696

申请日：2005-02-25

申请人： Naofumi Shinya ,  Norio Yamagata

发明人： Naofumi Shinya ,  Norio Yamagata

IPC分类号： G11B5/65 ,  G11B5/71

CPC分类号： G11B5/8404 ,  G11B5/7315 ,  Y10T428/24355 ,  Y10T428/315

摘要： Provided is a surface-treated substrate in which the roughness of the surface of the substrate is controlled. The surface-treated substrate can form a magnetic recording medium in which head flying stability is maintained and which has a magnetic film that can achieve high recording densities. Also provided is a method for roughening the surface of the substrate. More specifically, provided is a surface-treated silicon substrate for a magnetic recording medium in which a surface used for forming a recording layer has 40 to 1000 protrusions per 1 μm2 with a maximum height of 10 nm or less and an average roughness of 0.3 to 2.0 nm, and in which there are no defects or spots on any of the surface. Furthermore, provided is a method for manufacturing the surface-treated silicon substrate for the magnetic recording medium, comprising a step of etching a surface of a silicon substrate, wherein ultrasound is applied to the surface of the silicon substrate with the substrate shaken or rotated. Also provided is a magnetic recording medium, comprising the silicon substrate.

摘要翻译： 提供了其中控制基板的表面的粗糙度的表面处理基板。 经表面处理的基板可以形成其中保持头部飞行稳定性并且具有能够实现高记录密度的磁性膜的磁记录介质。 还提供了使基材的表面粗糙化的方法。 更具体地，提供了一种用于磁记录介质的表面处理硅衬底，其中用于形成记录层的表面每1mum2具有40至1000个突起，最大高度为10nm或更小，平均粗糙度为0.3至 2.0nm，并且在任何表面上没有缺陷或斑点。 此外，提供了一种用于制造用于磁记录介质的经表面处理的硅衬底的方法，包括蚀刻硅衬底的表面的步骤，其中超声波被施加到硅衬底的表面，衬底被摇动或旋转。 还提供了包括硅衬底的磁记录介质。

公开(公告)号：US20080020243A1

公开(公告)日：2008-01-24

申请号：US11767097

申请日：2007-06-22

申请人： Masahiko MORI ,  Daisuke URAZOE ,  Hiroshi HASHIMOTO

发明人： Masahiko MORI ,  Daisuke URAZOE ,  Hiroshi HASHIMOTO

IPC分类号： G11B5/65 ,  C07C69/96

CPC分类号： G11B5/70 ,  C07C68/02 ,  C07C68/08 ,  C07C69/96 ,  G11B5/71

摘要： A process for producing a carbonic acid ester is provided, the process comprising a step of synthesizing a saturated alkyl carbonic acid ester represented by Formula (1) so as to give the saturated alkyl carbonic acid ester represented by Formula (1) as a crude product and a step of subjecting the crude product to liquid-liquid extraction using a saturated hydrocarbon solvent and a solvent comprising an organic solvent that is not infinitely miscible with the saturated hydrocarbon solvent so as to give the saturated alkyl carbonic acid ester represented by Formula (1) as a purified product (in Formula (1), R1 and R2 independently denote a saturated hydrocarbon group provided that the sum of the number of carbons in R1 and the number of carbons in R2 is at least 12 but no greater than 50). There are also provided a carbonic acid ester produced by the production process, and a magnetic recording medium comprising a non-magnetic support and, above the non-magnetic support, a magnetic layer comprising a ferromagnetic powder dispersed in a binder, the magnetic layer comprising the carbonic acid ester and having on the surface a number of protrusions that satisfies Formula (2) 0.01≦H15/H10

摘要翻译： 提供了一种制备碳酸酯的方法，该方法包括合成由式（1）表示的饱和烷基碳酸酯，得到由式（1）表示的饱和烷基碳酸酯作为粗产物 使用饱和烃溶剂和包含与饱和烃溶剂无级混溶的有机溶剂的溶剂对粗产物进行液 - 液萃取，得到由式（1）表示的饱和烷基碳酸酯的步骤 ）作为纯化产物（式（1）中，R 1和R 2独立地表示饱和烃基，条件是R 0中的碳数之和 > 1 ，R 2 2中的碳数为至少12但不大于50）。 还提供了通过制造方法制备的碳酸酯和包含非磁性载体的磁性记录介质，并且在非磁性载体上方，包含分散在粘合剂中的铁磁性粉末的磁性层，所述磁性层包含 该碳酸酯并且在表面上具有满足式（2）的多个突起<？in-line-formula description =“In-line formula”end =“lead”？> 0.01 <= H 15 < （2）<？in-line-formula description =“In-line formula”end =“tail”？>（H 表示磁性层表面上的高度小于10nm（数/次<2>）的每单位面积的突起数，H 15表示 高度为15nm以上的磁性层表面上的每单位面积的突起数（数/次<2>））。