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公开(公告)号：US6010794A
公开(公告)日：2000-01-04
申请号：US852096
申请日：1997-05-06
申请人： Hiroyuki Suzuki , Yoshihiro Shiroishi , Sadao Hishiyama , Tomoyuki Ohno , Yotsuo Yahisa , Yoshibumi Matsuda , Norikazu Tsumita , Masaki Ohura , Takaaki Shirakura , Noriyuki Shige , Kazumasa Takagi
发明人： Hiroyuki Suzuki , Yoshihiro Shiroishi , Sadao Hishiyama , Tomoyuki Ohno , Yotsuo Yahisa , Yoshibumi Matsuda , Norikazu Tsumita , Masaki Ohura , Takaaki Shirakura , Noriyuki Shige , Kazumasa Takagi
摘要： A magnetic recording medium including a substrate and a magnetic layer on the substrate which is a Co-based alloy including Pt and/or Ir, including at least one of Ti, Zr, Hr, V, Nb, Ta, Cr, Mo, W, Ge, and Si, and including oxygen. A magnetic memory apparatus including the magnetic recording medium.
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公开(公告)号：US4883711A
公开(公告)日：1989-11-28
申请号：US133357
申请日：1987-12-15
申请人： Yoshihiro Shiroishi , Sadao Hishiyama , Hiroyuki Suzuki , Tomoyuki Ohno , Yoshibumi Matsuda , Kazumasa Takagi , Norikazu Tsumita , Yasushi Kitazaki , Masaki Ohura , Sadanori Nagaike
发明人： Yoshihiro Shiroishi , Sadao Hishiyama , Hiroyuki Suzuki , Tomoyuki Ohno , Yoshibumi Matsuda , Kazumasa Takagi , Norikazu Tsumita , Yasushi Kitazaki , Masaki Ohura , Sadanori Nagaike
CPC分类号： G11B5/7325 , G11B5/72 , Y10S428/90 , Y10T428/12465 , Y10T428/265
摘要： A magnetic recording medium in which a non-magnetic intermediate layer made of an alloy substantially composed of at least one element selected from the group consisting of Zr, Hf, Ta, Ti and Nb is disposed between a magnetic layer formed on a substrate and a non-magnetic overcoat layer formed on the magnetic layer. Since the impact shock resistance and the vibration resistance of the magnetic recording medium can be improved and the head-medium spacing of the magnetic disc apparatus can be decreased extremely by disposing the non-magnetic intermediate layer, it can provide a increase in the recording density, particularly, in a thin film type magnetic recording medium using a metallic magnetic thin film or metal oxide thin film as the magnetic layer. It can also improve the corrosion resistance in the case of a metallic magnetic thin film type medium.
摘要翻译： 一种磁记录介质，其中由在由Zr，Hf，Ta，Ti和Nb组成的组中选出的至少一种元素基本上构成的合金制成的非磁性中间层设置在形成在基板上的磁性层和 形成在磁性层上的非磁性外涂层。 由于可以通过设置非磁性中间层来提高磁记录介质的冲击冲击强度和抗振动性，并且能够极大地降低磁盘装置的头 - 介质间隔，因此可提高记录密度 特别是在使用金属磁性薄膜或金属氧化物薄膜作为磁性层的薄膜型磁记录介质中。 也可以在金属磁性薄膜型介质的情况下提高耐腐蚀性。
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公开(公告)号：US4792497A
公开(公告)日：1988-12-20
申请号：US149480
申请日：1988-01-28
申请人： Hiroyuki Suzuki , Yoshihiro Shiroishi , Sadao Hishiyama , Tomoyuki Ohno , Kazuetsu Yoshida , Shyuichi Kojima , Susumu Funamoto , Yasushi Kitazaki , Sakae Ohta , Hajime Aoi
发明人： Hiroyuki Suzuki , Yoshihiro Shiroishi , Sadao Hishiyama , Tomoyuki Ohno , Kazuetsu Yoshida , Shyuichi Kojima , Susumu Funamoto , Yasushi Kitazaki , Sakae Ohta , Hajime Aoi
CPC分类号： G11B5/64 , G11B5/722 , Y10S428/90 , Y10S428/928 , Y10T428/12465 , Y10T428/12826 , Y10T428/1284 , Y10T428/12854 , Y10T428/12931 , Y10T428/265
摘要： Disclosed is a magnetic recording medium of the magnetic metal thin-film type for longitudinal recording, in which the noise is reduced by selecting the value of maximum torque L (the product of magnetic anisotropy energy Ku and magnetic layer volume v; as measured by setting the axis of rotation in plane of the medium) and the value of magnetic flux .phi. (the product of saturation magnetization Ms and magnetic layer volume v) from a range defined by 0
摘要翻译： 公开了用于纵向记录的磁性金属薄膜型的磁记录介质，其中通过选择最大转矩L的值（磁各向异性能Ku与磁层体积v的乘积;通过设定测量 介质平面内的旋转轴）和由0
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公开(公告)号：US4842917A
公开(公告)日：1989-06-27
申请号：US88380
申请日：1987-08-24
申请人： Tomoyuki Ohno , Yoshihiro Shiroishi , Sadao Hishiyama , Hiroyuki Suzuki , Takaaki Shirakura , Shinya Matsuoka , Makoto Sano , Takao Nakamura , Kazumasa Takagi , Tokuumi Fukazawa , Kenzo Susa
发明人： Tomoyuki Ohno , Yoshihiro Shiroishi , Sadao Hishiyama , Hiroyuki Suzuki , Takaaki Shirakura , Shinya Matsuoka , Makoto Sano , Takao Nakamura , Kazumasa Takagi , Tokuumi Fukazawa , Kenzo Susa
IPC分类号： G11B5/73
CPC分类号： G11B5/7325 , Y10S428/90 , Y10T428/24355
摘要： A magnetic recording medium having a magnetic film formed on a substrate directly or through an underlayer from an alloy containing Co as a principal component. The central line average surface roughness Ra and maximum surface roughness Rmax of the magnetic film in a direction perpendicular to the direction of magnetic recording are selected so as to fall within the ranges of 1 nm.ltoreq.Ra.ltoreq.20 nm and Rmax.ltoreq.25 Ra, respectively, and the in-plane magnetic anisotropy energy Ku of the magnetic film is selected to fall within the range of 0.ltoreq.Ku.ltoreq.8.times.10.sup.5 erg/cm.sup.3. Thus, it is possible to minimize the value of modulation which represents the degree of variation of read output on the same circumference of a magnetic disk. It is also possible to reduce the noise generated in read and write operations by forming the magnetic film so as have no crystallographic orientation.
摘要翻译： 一种磁记录介质，其具有直接或通过底层从基板上形成的含有Co作为主要成分的合金的磁性膜。 选择磁性膜在垂直于磁记录方向的方向上的中心线平均表面粗糙度Ra和最大表面粗糙度Rmax，使其落入1nm≤Ra<20nm的范围内，并且Rmax < / = 25Ra，磁性膜的面内磁各向异性能Ku被选择在0≤K≤5×10 5Ω/ cm 3的范围内。 因此，可以将表示在磁盘的同一圆周上的读取输出的变化程度的调制值最小化。 也可以通过形成磁性膜来减少读取和写入操作中产生的噪声，从而没有结晶取向。
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公开(公告)号：US3947372A
公开(公告)日：1976-03-30
申请号：US382293
申请日：1973-07-25
CPC分类号： C04B35/2641 , C04B35/2608
摘要： The temperature for preparation of garnet phase of the conventional yttrium or rare-earth iron garnet can be lowered by about several hundreds centigrade by substituting 24C site of the garnet by lead. Thus obtained lead-substituted yttrium or rare-earth iron garnet has greater specific Faraday rotation than lead-nonsubstituted yttrium or rare-earth iron garnet.
摘要翻译： 用常规钇或稀土铁石榴石制备石榴石相的温度可以通过用铅代替石榴石的24C位点而降低几百摄氏度。 如此获得的铅取代钇或稀土铁石榴石比非铅取代钇或稀土铁石榴石具有更大的特定法拉第旋转。
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公开(公告)号：US4621030A
公开(公告)日：1986-11-04
申请号：US513422
申请日：1983-07-13
申请人： Yasutaro Uesaka , Hideo Fujiwara , Sadao Hishiyama , Kazuo Shiiki
发明人： Yasutaro Uesaka , Hideo Fujiwara , Sadao Hishiyama , Kazuo Shiiki
CPC分类号： G11B5/66 , G11B2005/0029 , Y10S428/928 , Y10T428/12438 , Y10T428/12465 , Y10T428/12535 , Y10T428/12931 , Y10T428/12937 , Y10T428/12944 , Y10T428/12951
摘要： A perpendicular magnetic recording medium free from spike noise having a high permeability magnetic material film, an antiferromagnetic material film and a perpendicularly oriented magnetic material film formed on a substrate in this order. Another high permeability magnetic material film may be formed between the antiferromagnetic material film and the perpendicularly oriented magnetic material film. During the formation of the antiferromagnetic material film, a magnetic field is applied in a direction of a track width.
摘要翻译： 没有尖峰噪声的垂直磁记录介质具有高磁导率磁性材料膜，反铁磁性材料膜和垂直取向的磁性材料膜，其顺序形成在基板上。 可以在反铁磁材料膜和垂直取向的磁性材料膜之间形成另一高磁导率磁性材料膜。 在反铁磁性材料膜的形成过程中，沿轨道宽度的方向施加磁场。
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公开(公告)号：US4544591A
公开(公告)日：1985-10-01
申请号：US537512
申请日：1983-09-30
申请人： Yasutaro Uesaka , Sadao Hishiyama , Masahiro Kitada , Noboru Shimizu , Hideo Tanabe , Hideo Fujiwara
发明人： Yasutaro Uesaka , Sadao Hishiyama , Masahiro Kitada , Noboru Shimizu , Hideo Tanabe , Hideo Fujiwara
IPC分类号： G11B5/00 , G11B5/64 , G11B5/66 , G11B5/667 , G11B5/70 , G11B5/738 , H01F10/06 , H01F10/12 , H01F10/13 , H01F10/18 , H01F10/187 , G11B25/04
CPC分类号： G11B5/00 , G11B5/66 , G11B5/70 , Y10S428/90 , Y10T428/24975
摘要： In a perpendicular magnetic recording medium comprising a high permeability film and a perpendicular magnetization film which are laminated on a non-magnetic substrate, a perpendicular magnetic recording medium is provided wherein a permanent magnet film is further sandwiched between the non-magnetic substrate and the high permeability film, thereby eliminating a spike noise.
摘要翻译： 在包括层叠在非磁性基板上的高导磁率膜和垂直磁化膜的垂直磁记录介质中，提供垂直磁记录介质，其中将永磁体膜进一步夹在非磁性基板和高磁性基板之间 渗透膜，从而消除尖峰噪声。
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公开(公告)号：US3952567A
公开(公告)日：1976-04-27
申请号：US586813
申请日：1975-06-13
CPC分类号： G01N27/12
摘要： A gas sensor comprising as a gas sensible material a spinel-type ferrite represented by the general formula AFe.sub.2 O.sub.4 in which A stands for at least one member selected from the group consisting of Li, Mg, Mn, Fe, Co, Ni, Cu, Zn and Pb is provided. In many cases, a catalyzer or a recovering agent need not be incorporated in this gas sensor, and it is characterized in that it is hardly influenced by moisture in the atmosphere.
摘要翻译： 一种气体传感器，其特征在于，作为气体感知材料，由通式AFe 2 O 4表示的尖晶石型铁氧体，A表示选自Li，Mg，Mn，Fe，Co，Ni，Cu，Zn 并提供Pb。 在许多情况下，催化剂或回收剂不需要并入该气体传感器中，其特征在于其几乎不受气氛中的水分的影响。
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9.发明授权公开(公告)号：US06627253B2
公开(公告)日：2003-09-30
申请号：US09897502
申请日：2001-07-03
申请人： Hiroyuki Suzuki , Yoshihiro Shiroishi , Sadao Hishiyama , Tomoyuki Ohno , Yotsuo Yahisa , Yoshibumi Matsuda , Norikazu Tsumita , Masaki Ohura , Takaaki Shirakura , Noriyuki Shige , Kazumasa Takagi
发明人： Hiroyuki Suzuki , Yoshihiro Shiroishi , Sadao Hishiyama , Tomoyuki Ohno , Yotsuo Yahisa , Yoshibumi Matsuda , Norikazu Tsumita , Masaki Ohura , Takaaki Shirakura , Noriyuki Shige , Kazumasa Takagi
IPC分类号： B32B3100
CPC分类号： G11B5/7325 , G11B5/656 , Y10T428/12465
摘要： A magnetic recording medium for longitudinal recording with a low media noise, a high S/N ratio and high reliabilities in corrosion resistance is disclosed. By making a magnetic layer from a Co-based alloy comprising 1 to 35 at. % of at least one element selected from the group consisting of Pt and Ir, 1 to 17 at. % of at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Ge and Si, except for Si, whose concentration is 1 to 40 at. and 0.1 to 10 at. of oxygen, a magnetic recording medium for longitudinal recording having an inplane coercivity of 1,200 Oe or more and a coercive squares of not more than 0.85 is obtained. A process for producing the magnetic recording medium for longitudinal medium and a magnetic memory apparatus using the magnetic recording medium for longitudinal recording are also disclosed.
摘要翻译： 公开了一种用于具有低介质噪声，高S / N比和高可靠性的耐腐蚀性的纵向记录用磁记录介质。 通过从包含1至35at。的Co基合金制备磁性层。 选自Pt和Ir中的至少一种元素的％，1至17at。 ％的选自Ti，Zr，Hf，V，Nb，Ta，Cr，Mo，W，Ge和Si中的至少一种元素，Si除外，其浓度为1〜40at。 和0.1〜10at。 的氧，用于纵向记录的磁记录介质具有1,200Oe以上的面内矫顽力和不大于0.85的矫顽正方形。 还公开了用于制造用于纵向介质的磁记录介质的方法和使用用于纵向记录的磁记录介质的磁存储装置。
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公开(公告)号：US06335103B1
公开(公告)日：2002-01-01
申请号：US08852096
申请日：1997-05-06
申请人： Hiroyuki Suzuki , Yoshihiro Shiroishi , Sadao Hishiyama , Tomoyuki Ohno , Yotsuo Yahisa , Yoshibumi Matsuda , Norikazu Tsumita , Masaki Ohura , Takaaki Shirakura , Noriyuki Shige , Kazumasa Takagi
发明人： Hiroyuki Suzuki , Yoshihiro Shiroishi , Sadao Hishiyama , Tomoyuki Ohno , Yotsuo Yahisa , Yoshibumi Matsuda , Norikazu Tsumita , Masaki Ohura , Takaaki Shirakura , Noriyuki Shige , Kazumasa Takagi
IPC分类号： H01F100
CPC分类号： G11B5/7325 , G11B5/656 , Y10S428/928 , Y10T428/12465 , Y10T428/12861
摘要： A magnetic recording medium including a substrate and a magnetic layer on the substrate which is a Co-based alloy including Pt and/or Ir, including at least one of Ti, Zr, Hr, V, Nb, Ta, Cr, Mo, W, Ge, and Si, and including oxygen. A magnetic memory apparatus including the magnetic recording medium.
摘要翻译： 1.一种磁记录介质，其特征在于，在所述基板上具有由Ti，Zr，Hr，V，Nb，Ta，Cr，Mo，W中的至少一种构成的包含Pt和/或Ir的Co基合金的基板和磁性层 ，Ge和Si，并且包括氧。 一种包括磁记录介质的磁存储装置。
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