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51.发明授权
公开(公告)号：US5875082A
公开(公告)日：1999-02-23
申请号：US794709
申请日：1997-02-04
申请人： Takanobu Takayama , Kiwamu Tanahashi , Kazuetsu Yoshida , Mikio Suzuki , Yoshiyuki Hirayama , Masaaki Futamoto , Yohji Maruyama
发明人： Takanobu Takayama , Kiwamu Tanahashi , Kazuetsu Yoshida , Mikio Suzuki , Yoshiyuki Hirayama , Masaaki Futamoto , Yohji Maruyama
摘要： A magnetic recording medium wherein, when the axis of easy magnetization of the magnetic recording medium for magnetically recording information by means of a magnetic head is projected onto a surface of the magnetic recording medium, the axis projected onto the surface of the magnetic recording medium exists so as to be unidirectionally inclined with respect to the direction of a track on which information is to be recorded, whereby, by using the magnetic recording medium, there can be provided a magnetic head and a magnetic read-write apparatus greatly improved in longitudinal recording density.
摘要翻译： 一种磁记录介质，其中当用于通过磁头磁信息记录的磁记录介质的易磁化轴被投影到磁记录介质的表面上时，投射到磁记录介质的表面上的轴存在 相对于要记录信息的轨道的方向是单向倾斜的，由此通过使用磁记录介质，可以提供在纵向记录中大大改进的磁头和磁读写装置 密度。
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公开(公告)号：US5536585A
公开(公告)日：1996-07-16
申请号：US207609
申请日：1994-03-09
申请人： Masaaki Futamoto , Atsushi Nakamura , Nobuyuki Inaba , Yoshiyuki Hirayama , Yoshibumi Matsuda , Mikio Suzuki , Yukio Honda
发明人： Masaaki Futamoto , Atsushi Nakamura , Nobuyuki Inaba , Yoshiyuki Hirayama , Yoshibumi Matsuda , Mikio Suzuki , Yukio Honda
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/656 , G11B5/7315 , G11B5/8404 , Y10S428/90 , Y10S428/928 , Y10T428/12465 , Y10T428/12819 , Y10T428/12826 , Y10T428/1284 , Y10T428/12847 , Y10T428/12854 , Y10T428/24355 , Y10T428/265
摘要： A magnetic recording medium is constructed with a substrate made of glass, one or two underlayers, and a magnetic film. In order that the easy magnetization axis of the magnetic film is parallel to the magnetic film, an underlayer having an NaCl crystallographic structure is superposed on the substrate. A magnetic film made of a Co based alloy having a hexagonal close packed crystallographic structure is formed on this underlayer, putting an underlayer made of a material having a body centered cubic crystallographic structure therebetween at need. Magnetic anisotropy of the magnetic film is increased by forming grooves in a predetermined direction in a surface portion of the substrate. These grooves play a role also for defining the orientation of the underlayer made of the material having an NaCl crystallographic structure.
摘要翻译： 磁记录介质由玻璃制成的基板，一个或两个底层和磁性膜构成。 为了使磁性膜的易磁化轴平行于磁性膜，将具有NaCl晶体结构的底层重叠在基板上。 在该底层上形成由具有六方密堆积结晶结构的Co基合金制成的磁性膜，在需要时将其由具有体心立方晶体结构的材料制成的底层。 通过在衬底的表面部分中沿预定方向形成沟槽来增加磁性膜的磁各向异性。 这些槽也起到确定由具有NaCl晶体结构的材料制成的底层的取向的作用。
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53.发明申请PATTERNED MAGNETIC RECORDING MEDIA AND METHODS OF PRODUCTION THEREOF UTILIZING CRYSTAL ORIENTATION CONTROL TECHNOLOGY 审中-公开图形磁记录介质及其生产方法利用晶体方向控制技术公开(公告)号：US20130155543A1
公开(公告)日：2013-06-20
申请号：US13327702
申请日：2011-12-15
CPC分类号： G11B5/7325 , G11B5/855
摘要： In one embodiment, a patterned magnetic recording medium includes an interlayer positioned above a nonmagnetic substrate, wherein portions of the interlayer have good crystal orientation separated by portions of the interlayer which have poor crystal orientation, and a magnetic recording layer positioned above the interlayer. The magnetic recording layer is defined by a pattern which includes magnetic portions having good crystal orientation above the portions of the interlayer having good crystal orientation separated by magnetic portions having poor crystal orientation above the portions of the interlayer having poor crystal orientation. In another embodiment, a method is proposed for producing the patterned magnetic recording medium as described above which includes forming an interlayer and a recording layer above the interlayer, and imparting a template pattern to the interlayer using an organic resist during or after formation of the interlayer. The interlayer is adapted for controlling crystal orientation of the recording layer.
摘要翻译： 在一个实施例中，图案化磁记录介质包括位于非磁性衬底之上的中间层，其中部分中间层具有由具有差的晶体取向的中间层的部分分离的良好的晶体取向，以及位于中间层上方的磁记录层。 磁记录层由包括具有良好晶体取向的具有良好晶体取向的磁性部分的磁性部分定义为具有良好晶体取向的磁性部分，该磁性部分在具有较差晶体取向的中间层部分上方的晶体取向差的磁性部分分开。 在另一个实施例中，提出了一种用于制造如上所述的图案化磁记录介质的方法，其包括在中间层之上形成中间层和记录层，并且在形成中间层期间或之后，使用有机抗蚀剂在中间层上赋予模板图案 。 中间层适于控制记录层的晶体取向。
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公开(公告)号：US07625646B2
公开(公告)日：2009-12-01
申请号：US11354085
申请日：2006-02-15
申请人： Yoshiyuki Hirayama , Ichiro Tamai , Takayuki Ichihara , Hiroyuki Nakagawa , Hiroaki Nemoto , Mineaki Kodama , Ikuko Takekuma
发明人： Yoshiyuki Hirayama , Ichiro Tamai , Takayuki Ichihara , Hiroyuki Nakagawa , Hiroaki Nemoto , Mineaki Kodama , Ikuko Takekuma
IPC分类号： G11B5/66
摘要： Disclosed are a perpendicular magnetic recording medium with lower medium noise, insusceptible to thermal fluctuation and high recording resolution and a method of manufacturing it. As the step of forming a metal layer at the time of forming a recording layer on a non-magnetic substrate via a plurality of underlayers and the step of forming an oxide layer with an average thickness of 0.2 nm or less are repeated, the crystal grains are magnetically isolated without disturbing the orientation of the crystal grain of the recording layer of the perpendicular magnetic recording medium or without degrading the magnetic characteristic of the crystal grain of the recording layer.
摘要翻译： 公开了一种具有较低介质噪声，不易受热波动和高记录分辨率的垂直磁记录介质及其制造方法。 作为通过多个底层在非磁性基板上形成记录层时形成金属层的步骤，重复平均厚度为0.2nm以下的氧化物层的工序，晶粒 磁性隔离，而不会干扰垂直磁记录介质的记录层的晶粒的取向，或不降低记录层的晶粒的磁特性。
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55.发明授权Perpendicular magnetic recording media and magnetic storage apparatus using the same 失效垂直磁记录介质及使用其的磁存储装置公开(公告)号：US07618722B2
公开(公告)日：2009-11-17
申请号：US12079701
申请日：2008-03-27
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/65 , G11B5/656
摘要： Embodiments of the invention provide a perpendicular magnetic recording medium that not only attains the magnetic isolation of crystal grains in a magnetic recording layer from one another in a region of the medium in which the thickness of an intermediate layer is equal to or smaller than about 20 nm but also exhibits excellent crystallographic texture and that exhibits small medium noise, excellent thermal stability, and high write-ability. In one embodiment, a perpendicular magnetic recording medium has at least a soft-magnetic underlayer, a first intermediate layer, a second intermediate layer, a third intermediate layer, and a magnetic recording layer successively formed on a substrate. The magnetic recording layer is composed of ferromagnetic crystal grains and oxides or nitrides, the third intermediate layer is composed of Ru or an Ru alloy, the second intermediate layer is composed of a metal or an alloy having the face-centered cubic lattice structure, and the first intermediate layer is composed of a metal or an alloy having the hexagonal close-packed structure.
摘要翻译： 本发明的实施例提供了一种垂直磁记录介质，其不仅在中间层的厚度等于或小于约20的介质的区域中彼此之间实现磁记录层中的晶粒的磁隔离 nm，但也具有优异的晶体学结构，表现出中等的中等噪声，优异的热稳定性和高的写入能力。 在一个实施例中，垂直磁记录介质至少具有在基板上依次形成的软磁性底层，第一中间层，第二中间层，第三中间层和磁记录层。 磁记录层由铁磁性晶粒和氧化物或氮化物构成，第三中间层由Ru或Ru合金构成，第二中间层由具有面心立方晶格结构的金属或合金构成， 第一中间层由具有六方密堆积结构的金属或合金构成。
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56.发明授权公开(公告)号：US07534507B2
公开(公告)日：2009-05-19
申请号：US11243012
申请日：2005-10-03
申请人： Reiko Arai , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki , Yoko Ogawa , Ikuko Takekuma
发明人： Reiko Arai , Yoshiyuki Hirayama , Yuzuru Hosoe , Tomio Iwasaki , Yoko Ogawa , Ikuko Takekuma
IPC分类号： G11B5/66
摘要： Embodiments of the invention are directed to a medium which provides high media S/N and good corrosion resistance. According to one embodiment, in a perpendicular magnetic recording medium at least comprising a soft-magnetic underlayer, a seed layer, an intermediate layer, a magnetic recording layer and an overcoat layer which are stacked over a substrate in order, the magnetic recording layer has a granular structure which includes many columnar grains of CoCrPt alloy and a grain boundary layer containing an oxide, the seed layer is made of TaNi alloy or TaTi alloy and the intermediate layer is made of Ru or Ru alloy which contains 80 at. % Ru or more.
摘要翻译： 本发明的实施方案涉及提供高介质S / N和良好耐腐蚀性的介质。 根据一个实施例，在依次层叠在基板上的至少包括软磁性底层，种子层，中间层，磁记录层和覆盖层的垂直磁记录介质中，磁记录层具有 包括许多CoCrPt合金的柱状晶粒和含有氧化物的晶界层的粒状结构，种子层由TaNi合金或TaTi合金制成，中间层由含有80at的Ru或Ru合金制成。 ％Ru或更多。
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公开(公告)号：US07399540B2
公开(公告)日：2008-07-15
申请号：US11582327
申请日：2006-10-18
IPC分类号： G11B5/66
CPC分类号： G11B5/667 , G11B5/64 , G11B5/66 , Y10S428/90 , Y10T428/265
摘要： A perpendicular magnetic recording medium which has been improved to be suitable for high-density magnetic recording and a magnetic recording apparatus using the medium are provided. The magnetic back film of a dual-layer perpendicular recording medium is caused to be constituted by a plurality of layers, and a keeper layer 17 for keeping perpendicular magnetization and layers 13 and 15 for improving the recording efficiency of a recording head are functionally separated from one another. Further, the magnetization orientations of the soft magnetic films excluding the keeper layer are defined to be in the circumferential direction of the disk, whereby the frequency of occurrence of noise is decreased.
摘要翻译： 提供了已经改进以适合于高密度磁记录的垂直磁记录介质和使用介质的磁记录装置。 使双层垂直记录介质的磁背膜由多层构成，用于保持垂直磁化的保持层17和用于提高记录头的记录效率的层13和15在功能上与 另一个。 此外，除了保持层之外的软磁性膜的磁化取向被限定在圆盘的圆周方向上，从而噪声的发生频率降低。
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公开(公告)号：US20070223142A1
公开(公告)日：2007-09-27
申请号：US11726099
申请日：2007-03-20
CPC分类号： G11B5/66 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/3146 , G11B5/315 , G11B5/3967 , G11B5/656
摘要： According to embodiments of the present invention, a shielded pole writer and a perpendicular magnetic recording medium suitable thereto are combined to provide high medium SNR and excellent OW characteristic simultaneously. A perpendicular magnetic recording medium of a magnetic storage apparatus mounting a shielded pole writer, including a perpendicular magnetic recording medium having a recording layer of a three layered structure is used. A first recording layer has a granular structure consisting of grain boundaries containing an oxide and columnar grains comprising a CoCrPt alloy, in which a second recording layer and a third recording layer formed thereabove comprise Co as a main ingredient, contain Cr and do not contain an oxide, and the Cr concentration in the second recording layer is lower than the Cr concentration in the third recording layer.
摘要翻译： 根据本发明的实施例，组合屏蔽极写入器和适合于其的垂直磁记录介质，以同时提供高中等信噪比和优异的OW特性。 使用安装屏蔽极写入器的磁存储装置的垂直磁记录介质，其包括具有三层结构的记录层的垂直磁记录介质。 第一记录层具有由包含氧化物的晶界和包含CoCrPt合金的柱状晶粒构成的粒状结构，其中形成在其上的第二记录层和第三记录层包含Co作为主要成分，并且不含有 并且第二记录层中的Cr浓度低于第三记录层中的Cr浓度。
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公开(公告)号：US07249405B2
公开(公告)日：2007-07-31
申请号：US11062652
申请日：2005-02-23
CPC分类号： G11B5/732 , G11B5/65 , G11B5/667 , G11B5/7325 , G11B5/8404 , Y10T29/49021 , Y10T29/49025 , Y10T29/49032 , Y10T29/49041 , Y10T29/49044 , Y10T29/49078 , Y10T29/49224 , Y10T428/12465 , Y10T428/12757 , Y10T428/24355 , Y10T428/31
摘要： Disclosed is a magnetic recording medium and a method for manufacturing the same to provide a magnetic recording medium reducing medium noise and having excellent thermal stability. The magnetic recording medium includes a substantially amorphous seed layer and a polycrystal underlayer made of crystal grains having a substantially columnar structure, the polycrystal underlayer contacting thereto. In a boundary between the seed layer and the underlayer, fine grooves having a period up to as large as the magnetic layer crystal grain diameter are formed in the disc circumferential direction. Accordingly, the magnetic recording medium is allowed to have a grain shape with a value obtained by dividing the average grain diameter for the disc circumferential direction by the average grain diameter for the disc radial direction of no less than 0.5 and no more than 0.9, thus achieving simultaneously reduction of the medium noise and thermal stability.
摘要翻译： 公开了一种磁记录介质及其制造方法，以提供磁记录介质降低介质噪声并具有优异的热稳定性。 磁记录介质包括基本上无定形的种子层和由具有基本上柱状结构的晶粒制成的多晶底层，多晶底层与其接触。 在种子层和底层之间的边界处，在盘周向形成有具有与磁性层晶粒直径一样大的周期的细槽。 因此，使磁记录介质具有通过将盘圆周方向的平均粒径除以盘径向的平均粒径为不小于0.5且不大于0.9而获得的值的晶粒形状，因此 实现中等噪声和热稳定性的同时降低。
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公开(公告)号：US20070037018A1
公开(公告)日：2007-02-15
申请号：US11582327
申请日：2006-10-18
IPC分类号： G11B5/66
CPC分类号： G11B5/667 , G11B5/64 , G11B5/66 , Y10S428/90 , Y10T428/265
摘要： A perpendicular magnetic recording medium which has been improved to be suitable for high-density magnetic recording and a magnetic recording apparatus using the medium are provided. The magnetic back film of a dual-layer perpendicular recording medium is caused to be constituted by a plurality of layers, and a keeper layer 17 for keeping perpendicular magnetization and layers 13 and 15 for improving the recording efficiency of a recording head are functionally separated from one another. Further, the magnetization orientations of the soft magnetic films excluding the keeper layer are defined to be in the circumferential direction of the disk, whereby the frequency of occurrence of noise is decreased.
摘要翻译： 提供了已经改进以适合于高密度磁记录的垂直磁记录介质和使用介质的磁记录装置。 使双层垂直记录介质的磁背膜由多层构成，用于保持垂直磁化的保持层17和用于提高记录头的记录效率的层13和15在功能上与 另一个。 此外，除了保持层之外的软磁性膜的磁化取向被限定在圆盘的圆周方向上，从而噪声的发生频率降低。
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