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公开(公告)号：US5492775A
公开(公告)日：1996-02-20
申请号：US69060
申请日：1993-05-28
CPC分类号： C23C14/085 , C23C14/08 , C23C14/58 , C23C14/5806 , C23C14/584 , G11B5/653
摘要： A high-density recording media comprising longitudinally oriented polycrystalline barium ferrite exhibits large coercivity, corrosion resistance, high hardness and durability. Films are prepared by on-axis sputtering at ambient temperatures from stoichiometric targets followed by a post-deposition anneal at approximately 850.degree.C. to induce crystallization. Crystallization yields a magnetic film with large in-plane remanence and a fine scale texturing that greatly improves the tribological performance of barium ferrite disks. Exceptional durability can be achieved on disks without overcoats. Grain sizes as small as 200 .ANG. are produced by doping with small amounts of Cr.sub.2 O.sub.3 or other additives. Coercivities greater than 4000 Oe are achieved even in small grain films.
摘要翻译： 包含纵向取向的多晶钡铁氧体的高密度记录介质具有较高的矫顽力，耐腐蚀性，高硬度和耐久性。 通过在环境温度下从化学计量的靶进行在轴溅射制备膜，然后在约850℃下进行后沉积退火以诱导结晶。 结晶产生具有大的面内剩余磁性膜和精细尺度纹理，大大提高钡铁氧体磁盘的摩擦学性能。 可以在没有大衣的磁盘上实现卓越的耐久性。 通过掺杂少量的Cr 2 O 3或其它添加剂来生产小于200安培的晶粒尺寸。 即使在小颗粒薄膜中也能获得大于4000 Oe的矫顽力。
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32.发明授权Magnetic recording medium and method for the manufacture thereof including spaced apart deposits 失效磁记录介质及其制造方法，包括间隔开的沉积物
公开(公告)号：US5474830A
公开(公告)日：1995-12-12
申请号：US99353
申请日：1993-07-30
IPC分类号： G11B5/72 , G11B5/64 , G11B5/73 , G11B5/738 , G11B5/84 , G11B5/85 , G11B5/851 , G11B5/66 , B32B9/04 , C23C14/32 , G11B5/70
CPC分类号： G11B5/7325 , G11B5/8404 , Y10S428/90 , Y10T428/12465 , Y10T428/12472 , Y10T428/12806 , Y10T428/12847 , Y10T428/12951 , Y10T428/24355 , Y10T428/24521
摘要： To improve the sliding characteristics of a magnetic head by reducing a friction coefficient, and realize a magnetic recording medium with a high recording density and a large capacity, capable of reducing the flotation distance of the magnetic head. On the surface of a base, aluminum containing nitrogen aggregates locally to form islands of metal deposits, which are distributed discretely over the entire surface of the base. Meanwhile, on the metal deposits, a metal base layer, a magnetic layer, a protective layer, and a lubrication layer are laminated sequentially to form a magnetic recording disk. On the disk surface, ultrafine irregularities are formed that reflect the shapes of the metal deposits, thereby realizing a reduction in the friction coefficient.
摘要翻译： 通过降低摩擦系数来改善磁头的滑动特性，实现具有高记录密度和大容量的磁记录介质，能够降低磁头的浮选距离。 在碱的表面上，含铝的氮聚集在一起形成金属沉积物岛，其分散在基底的整个表面上。 同时，在金属沉积物上依次层叠金属基层，磁性层，保护层和润滑层，形成磁记录盘。 在盘表面上形成反映金属沉积物形状的超微细凹凸，从而实现摩擦系数的降低。
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公开(公告)号：US5456978A
公开(公告)日：1995-10-10
申请号：US101230
申请日：1993-08-03
申请人： Brij B. Lal , Tadashi Shinohara
发明人： Brij B. Lal , Tadashi Shinohara
IPC分类号： G11B5/66 , C23C14/18 , G11B5/64 , G11B5/72 , G11B5/73 , G11B5/738 , G11B5/84 , G11B5/85 , G11B5/851 , B32B5/16 , B05D5/12 , C23C14/00
CPC分类号： G11B5/7325 , C23C14/185 , G11B5/65 , G11B5/72 , G11B5/8404 , Y10T428/12847 , Y10T428/12854 , Y10T428/26 , Y10T428/265 , Y10T428/30
摘要： A magnetic thin-film medium formed on a non-metallic substrate and having reduced noise characteristics, by virtue of a 5-50 .ANG., sputtered Cr-containing sublayer interposed between the substrate and a chromium underlayer. Also disclosed is a method of preparing the low-noise medium.
摘要翻译： 一种磁性薄膜介质，其形成在非金属基底上，并具有降低的噪声特性，借助于5-50安提姆，溅射的含Cr的子层介于基底和铬底层之间。 还公开了一种制备低噪声介质的方法。
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34.发明授权Thin film magnetic recording disk comprising a metallic disk blank, a substantially non-magnetic Ni-Cr-O film having a textured surface and a magnetic film 失效薄膜磁记录盘包括金属盘坯，具有纹理表面的基本上非磁性的Ni-Cr-O膜和磁膜
公开(公告)号：US5436047A
公开(公告)日：1995-07-25
申请号：US138934
申请日：1993-10-15
CPC分类号： G11B5/7325 , G11B5/8404 , Y10S428/90 , Y10S428/938 , Y10T428/24355 , Y10T428/265
摘要： A magnetic recording disk has an improved surface film formed on the disk blank. A sputter-deposited surface coating containing nickel, chromium and oxygen (Ni--Cr--O) is formed on a AlMg disk blank, after which a cobalt alloy magnetic layer is formed over the Ni--Cr--O coating and a protective overcoat is formed over magnetic layer. The use of the Ni--Cr--O coating on the disk blank eliminates the need for a wet electroless deposition process for creation of a surface coating and results in an inherent texturing of the subsequently deposited magnetic film and protective overcoat which conform to the surface texture of the sputter-deposited Ni--Cr--O. The disks made with the Ni--Cr--O surface film exhibit a very low static friction force between the air-bearing slider and the disk surface when the disks are used in contact start/stop (CSS) disk files.
摘要翻译： 磁记录盘具有形成在盘坯上的改进的表面膜。 在AlMg盘坯上形成包含镍，铬和氧（Ni-Cr-O）的溅射沉积表面涂层，之后在Ni-Cr-O涂层上形成钴合金磁性层，形成保护外涂层 磁性层。 在盘坯上使用Ni-Cr-O涂层消除了对用于产生表面涂层的湿式无电沉积工艺的需要，并导致随后沉积的磁性膜和保护性外涂层的固有纹理，其符合表面纹理 的溅射沉积的Ni-Cr-O。 使用Ni-Cr-O表面薄膜制成的圆盘，当磁盘用于触点启动/停止（CSS）磁盘文件时，在空气滑动滑块和磁盘表面之间显示非常低的静摩擦力。
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公开(公告)号：US5268207A
公开(公告)日：1993-12-07
申请号：US632286
申请日：1990-12-21
CPC分类号： B24B1/04 , B24B31/06 , B24C1/04 , G11B5/8404
摘要： In a process for manufacturing a rigid magnetic recording disk, the disk's rigid substrate member is subjected to a force that produces plastic deformation in a manner so as not to remove material therefrom. In this way, the disk is provided with a surface topography that contains a controlled texture, for example in the area of the disk's start/stop track. In an embodiment of the invention, an ultrasonic probe and a disk shaped substrate member are placed in close proximity within a container that holds a fluid abrasive slurry, i.e. a suspension of hard particles in a liquid. Operation of the ultrasonic probe, as the substrate member rotates, causes the slurry to texture an adjacent portion of the substrate member by means of plastic deformation and in the absence of material removal from the substrate member. Operation of the probe thus provides texturing of the disk at an inner diameter track area thereof, for example in the disk's start/stop area. Since no material is removed from the substrate member, a step is not produced between the disk's start/stop area and the disk's outer data area. Alternate means for agitating the slurry, such as a hollow tip ultrasonic probe, a jet of slurry, and a jet of another fluid, such as an inert gas, are described.
摘要翻译： 在制造刚性磁记录盘的过程中，盘的刚性衬底构件受到以不从其中去除材料的方式产生塑性变形的力。 以这种方式，盘被提供有包含受控纹理的表面形貌，例如在盘的起始/停止轨迹的区域中。 在本发明的一个实施例中，将超声波探头和盘形基底构件放置在容纳流体磨料浆料的容器内，即将硬质颗粒悬浮在液体中。 超声波探头作为基片部件旋转时的操作使得浆料通过塑性变形和不从材料从衬底部件去除而使衬底部件的相邻部分纹理化。 因此，探针的操作在其内径轨道区域例如盘的起始/停止区域中提供盘的纹理化。 由于没有材料从基板部件移除，所以在盘的起始/停止区域和盘的外部数据区域之间不产生一个步骤。 描述了用于搅拌浆料的替代方法，例如中空尖端超声波探头，浆料射流和另一种流体如惰性气体的射流。
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公开(公告)号：US5244554A
公开(公告)日：1993-09-14
申请号：US716927
申请日：1991-06-18
CPC分类号： C23C14/564 , C23C14/568
摘要： A method of producing recording media which comprises steps of arranging substrates for recording media on a carrier which is purified by etching with a plasma state gas; and forming a plurality of sputtered layers on the substrates.An apparatus for producing recording media which comprises a sputtering chamber which forms a recording layer; and a treatment chamber which precedes the sputtering chamber, and in which a carrier to be arranged with substrates for the recording media is purified by a plasma state gas.
摘要翻译： 一种制备记录介质的方法，包括以下步骤：将记录介质的基板布置在通过用等离子体状态气体蚀刻而净化的载体上; 并在基板上形成多个溅射层。 一种用于制造记录介质的设备，包括形成记录层的溅射室; 以及在溅射室之前的处理室，其中与等离子体状态气体一起净化用于记录介质的基板的载体。
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公开(公告)号：US5183686A
公开(公告)日：1993-02-02
申请号：US836890
申请日：1992-02-19
申请人： Kazunori Komatsu , Mikio Tomaru
发明人： Kazunori Komatsu , Mikio Tomaru
CPC分类号： G11B5/845
摘要： A method for manufacturing a magnetic recording medium includes continuously conveying a support, applying a magnetic solution to the support to form a magnetic layer thereon, and subjecting the magnetic layer thus formed on the support to orientation and drying. The magnetic solution is prepared by dispersing magnetic particles therein such that the magnetization of the magnetic solution provided by a magnetic field having a predetermined field strength being applied thereto for one minute satisfies a relationship:M.sub.H /M.sub.S >2H/Hc,where M.sub.S is the saturation magnetization of the magnetic solution, Hc is the coercive force (Oe) of the ferromagnetic particles in the magnetic solution, and Hc/5.gtoreq.H.gtoreq.Hc/50.
摘要翻译： 磁记录介质的制造方法包括连续输送载体，将磁性溶液涂布在载体上以在其上形成磁性层，并对由此形成的载体上的磁性层进行取向和干燥。 通过在其中分散磁性颗粒来制备磁性溶液，使得通过施加具有预定场强的磁场提供的磁性溶液的磁化达到一分钟，满足关系：MH / MS> 2H / Hc，其中MS是 磁性溶液的饱和磁化强度Hc是磁性溶液中铁磁颗粒的矫顽力（Oe），Hc / 5> = H> / = Hc / 50。
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公开(公告)号：US5126027A
公开(公告)日：1992-06-30
申请号：US596826
申请日：1990-10-12
申请人： Hideo Kudo , Shigeru Tani , Yasushi Tamaki , Genichi Ishida , Shoji Ishida , Seigo Toyofuku , Fumio Fukasawa
发明人： Hideo Kudo , Shigeru Tani , Yasushi Tamaki , Genichi Ishida , Shoji Ishida , Seigo Toyofuku , Fumio Fukasawa
CPC分类号： C23C14/505 , C23C14/541 , C23C14/56
摘要： A thin film forming method includes the steps of preheating a plurality of base plates placed at a first position, sequentially picking up the base plates one by one and positioning a picked-up base plate at a second position, heating the picked-up base plate at the second position so that a temperature of the picked-up base plate becomes approximately equal to a predetermined temperature, moving the picked-up base plate from the second position to a third position, and growing a thin film on a surface of the picked-up base plate at the third position.
摘要翻译： 薄膜形成方法包括以下步骤：对放置在第一位置的多个基板进行预热，依次顺序地拾取基板并将拾取的基板定位在第二位置，将拾取的基板 在所述第二位置，使得所拾取的基板的温度近似等于预定温度，将所拾取的基板从第二位置移动到第三位置，并且在拾取的表面上生长薄膜 在第三位置的基板。
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公开(公告)号：US5080982A
公开(公告)日：1992-01-14
申请号：US292533
申请日：1988-12-30
申请人： Yuzo Yamamoto , Katsunori Nomoto , Tsutomu Isobe
发明人： Yuzo Yamamoto , Katsunori Nomoto , Tsutomu Isobe
IPC分类号： H03K17/16 , G11B5/64 , G11B5/85 , G11B5/851 , G11B5/858 , H03K19/0185 , H03K19/0948 , G11B5/66
CPC分类号： G11B5/65 , G11B5/85 , G11B5/851 , G11B5/858 , Y10S428/90
摘要： The magnetic recording medium comprises a substrate, a recording coating of a ferromagnetic metal and an aromatic organic polymer having a weight-average molecular weight of 1,000 to 5,000,000. The magnetic recording medium is produced by a plating method or a vaporization method so as to form co-deposition of the metal and the polymer. The magnetic recording medium produced is improved in resistance to corrosion.
摘要翻译： 磁记录介质包括基材，强磁性金属的记录涂层和重均分子量为1,000至5,000,000的芳族有机聚合物。 通过电镀法或汽化法制造磁记录介质，以形成金属和聚合物的共沉积。 生产的磁记录介质的耐腐蚀性得到改善。
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公开(公告)号：US5000984A
公开(公告)日：1991-03-19
申请号：US352256
申请日：1989-05-16
申请人： Kunio Wakai , Hideaki Niimi , Noboru Isoe
发明人： Kunio Wakai , Hideaki Niimi , Noboru Isoe
CPC分类号： C23C14/027 , C23C14/0021 , G11B5/64 , G11B5/85 , G11B5/851 , Y10S428/90 , Y10T428/24413 , Y10T428/24942
摘要： A magnetic recording medium comprising a substrate and, as a recording layer, a ferromagnetic metal thin layer formed on the substrate by deposition, in which the ferromagnetic metal thin layer contains oxygen atom in such a manner that concentrations of oxygen atom in a surface layer and an interfacial layer adjacent to the substrate are higher than that in an intermediate layer between the surface and interfacial layers, which has an improved coercive force and smaller magnetic domain.
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