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    • 62. 发明申请
    • PERPENDICULAR MAGNETIC RECORDING MEDIUM
    • 全能磁记录介质
    • US20100297476A1
    • 2010-11-25
    • US12595805
    • 2008-04-11
    • Yasushi SakaiShunji Takenoiri
    • Yasushi SakaiShunji Takenoiri
    • G11B5/667
    • G11B5/667G11B5/647G11B5/65G11B5/7325
    • A perpendicular magnetic recording medium includes a nonmagnetic substrate, and a soft magnetic layer, a first orientation control layer, a second orientation control layer, a nonmagnetic intermediate layer, a magnetic recording layer, and a protective layer layered sequentially on the nonmagnetic substrate. The first orientation control layer includes a thin film having a face-centered cubic (fcc) structure. The magnetic recording layer includes a thin film layer having ferromagnetic crystal grains and nonmagnetic grain boundaries surrounding the ferromagnetic crystal grains, the ferromagnetic crystal grains including a CoPt alloy having ferromagnetic properties, and the nonmagnetic grain boundaries including an oxide or a nitride. The nonmagnetic intermediate layer includes a thin film containing Ru. The second orientation control layer includes an alloy thin film having an element selected from among Ni and Fe and having the fcc structure, the second orientation control layer having a saturation magnetic flux density Bs of 1 T or lower.
    • 垂直磁记录介质包括非磁性基板,以及在非磁性基板上依次分层的软磁性层,第一取向控制层,第二取向控制层,非磁性中间层,磁记录层和保护层。 第一取向控制层包括具有面心立方(fcc)结构的薄膜。 磁记录层包括具有铁磁晶粒和包围铁磁晶粒的非磁性晶粒边界的薄膜层,包含具有铁磁特性的CoPt合金的铁磁晶粒和包含氧化物或氮化物的非磁性晶界。 非磁性中间层包括含有Ru的薄膜。 第二取向控制层包括具有选自Ni和Fe中的元素并具有fcc结构的合金薄膜,第二取向控制层的饱和磁通密度Bs为1T以下。
    • 64. 发明申请
    • Perpendicular magnetic recording medium
    • 垂直磁记录介质
    • US20080096055A1
    • 2008-04-24
    • US11907118
    • 2007-10-09
    • Shunji TakenoiriYasushi Sakai
    • Shunji TakenoiriYasushi Sakai
    • G11B5/66
    • G11B5/667G11B5/7325
    • A perpendicular magnetic recording medium includes a nonmagnetic substrate; a first underlayer provided on the nonmagnetic substrate; a first nonmagnetic intermediate layer provided on the first underlayer; a second underlayer provided on the first nonmagnetic intermediate layer; a second nonmagnetic intermediate layer provided on the second underlayer; and a magnetic recording layer provided on the second nonmagnetic intermediate layer, wherein the first underlayer comprises a soft magnetic material which has a face-centered cubic structure and which includes at least Ni and Fe, and wherein the second underlayer comprises a soft magnetic material which has a face-centered cubic structure and which includes at least Co. The orientation dispersion is reduced and crystal grain diameters are smaller in the magnetic recording layer, and the film thickness of nonmagnetic intermediate layers can be decreased so that performance improvements such as reduced noise, increased S/N ratio, and improved write-ability are achieved.
    • 垂直磁记录介质包括非磁性基片; 设置在非磁性基板上的第一底层; 设置在第一底层上的第一非磁性中间层; 设置在第一非磁性中间层上的第二底层; 设置在所述第二底层上的第二非磁性中间层; 以及设置在所述第二非磁性中间层上的磁记录层,其中所述第一底层包括具有面心立方结构且至少包括Ni和Fe的软磁材料,并且其中所述第二底层包括软磁性材料, 具有面心立方结构,并且至少包括CO。磁记录层中的取向色散减小,晶粒直径较小,可以降低非磁性中间层的膜厚,从而降低噪声等性能改善 ,提高了S / N比,提高写入能力。
    • 67. 发明授权
    • Method of producing a magnetic recording medium and a magnetic recording medium formed thereby
    • 制造磁记录介质的方法和由此形成的磁记录介质
    • US07150895B2
    • 2006-12-19
    • US10390332
    • 2003-03-17
    • Sadayuki WatanabeYasushi Sakai
    • Sadayuki WatanabeYasushi Sakai
    • G11B5/66
    • G11B5/732G11B5/667G11B5/7325G11B5/8404
    • A perpendicular magnetic recording medium has a magnetic recording layer with ferromagnetic crystalline grains and nonmagnetic and nonmetallic grain boundary region surrounding the grains. The surface of its underlayer, before forming the magnetic recording layer, is exposed to an O2 or N2 atmosphere or an atmosphere of rare gas and O2 or N2, to attach the O2 or N2 as nucleation sites for promoting growth of the nonmagnetic and nonmetallic region. By forming the magnetic recording layer thereafter, both ferromagnetic crystalline grains and the nonmagnetic and nonmetallic grain boundary region are formed from the initial stage of the growth of the magnetic recording layer. Thus, a magnetic recording layer having excellent segregation structure can be formed.
    • 垂直磁记录介质具有磁性晶粒和围绕晶粒的非磁性和非金属晶界区域的磁记录层。 在形成磁记录层之前,其底层的表面暴露于O 2/2或N 2 O 2气氛或稀有气体和O 2的气氛中, / SUB>或N 2,以将O 2 N 2或N 2 N 2作为成核位置附着以促进非磁性和非金属区域的生长。 此后,通过形成磁记录层,从磁记录层的生长的初始阶段形成铁磁晶粒和非磁性和非金属晶界区域。 因此,可以形成具有优异偏析结构的磁记录层。
    • 68. 发明授权
    • Perpendicular magnetic recording medium and manufacturing method thereof
    • 垂直磁记录介质及其制造方法
    • US07045225B2
    • 2006-05-16
    • US10723182
    • 2003-11-26
    • Sadayuki WatanabeYasushi Sakai
    • Sadayuki WatanabeYasushi Sakai
    • G11B5/66G11B5/70
    • G11B5/732G11B5/667G11B5/7325G11B5/84
    • A perpendicular magnetic recording suitable for mass production and having suppressed spike noise has at least a seed layer, an orientation controlling layer, an antiferromagnetic layer, a soft magnetic layer, a magnetic recording layer, a protective layer, and a liquid lubricant layer formed on a nonmagnetic substrate. The orientation controlling layer is composed of a material comprising at least Ni and Fe, and having at least one element selected from the group consisting of B, Nb, and Si. The seed layer is composed of Ta. Further, after depositing the antiferromagnetic layer and the soft magnetic layer, but before depositing the magnetic recording layer, the substrate is heated to a blocking temperature or higher, and thereafter cooled to the blocking temperature or below while applying a static magnetic field in a radial direction of the substrate.
    • 适用于批量生产并具有抑制尖峰噪声的垂直磁记录至少形成有晶种层,取向控制层,反铁磁层,软磁层,磁记录层,保护层和液体润滑剂层 非磁性基板。 取向控制层由至少包含Ni和Fe的材料组成,并且具有选自B,Nb和Si中的至少一种元素。 种子层由Ta组成。 此外,在沉积反磁铁层和软磁层之后,但在沉积磁记录层之前,将衬底加热至阻塞温度或更高,然后在径向施加静磁场的同时冷却至阻挡温度或更低 基板的方向。
    • 69. 发明申请
    • Holding structure of spectacle lens,method of repairing the spectacles
    • 眼镜镜片的保持结构,修复眼镜的方法
    • US20060077337A1
    • 2006-04-13
    • US10537552
    • 2004-05-28
    • Yasushi Sakai
    • Yasushi Sakai
    • G02C5/00
    • G02C1/02
    • Without using screwing members such as a screw and a nut, and extra parts such as a bush, a cylindrical pin and a slip-off preventive pin, and with a simple structure, the spectacle lens can surely be held. A taper pin 21 is provided projecting on a lens holding member (endpiece 4 and bridge 5) for holding a spectacle lens 10, and a taper hole 11 having approximately the same size as the taper pin is provided on the spectacle lens, and the taper pin is directly press-fitted into the taper hole, thereby surely holding the spectacle lens by a press-contact between an inner circumferential surface of the taper hole and an outer circumferential surface of the taper pin. The taper pin is press-fitted in a thickness direction of the spectacle lens 10.
    • 不使用诸如螺钉和螺母的螺纹构件,以及诸如衬套,圆柱形销和防脱扣的额外部件,并且结构简单,可以可靠地保持眼镜镜片。 设置在用于保持眼镜10的透镜保持构件(端头4和桥5)上突出的锥形销21,并且在眼镜镜片上设置有与锥销大致相同尺寸的锥形孔11,并且锥形 销被直接压入锥形孔,从而通过在锥形孔的内周面与锥销的外周面之间的压接而可靠地保持眼镜镜片。 锥形销在眼镜镜片10的厚度方向上压配合。
    • 70. 发明授权
    • Perpendicular magnetic recording medium
    • 垂直磁记录介质
    • US06787252B2
    • 2004-09-07
    • US10227524
    • 2002-08-26
    • Yasushi SakaiSadayuki Watanabe
    • Yasushi SakaiSadayuki Watanabe
    • G11B566
    • G11B5/667G11B5/65G11B5/7325Y10S428/90
    • A perpendicular magnetic recording medium without shift or loss of written signals even in a case of a high recording density in a rare earth-transition metal alloy amorphous film, and where productivity is excellent. The perpendicular magnetic recording medium includes a soft magnetic under layer, an intermediate layer, a magnetic recording layer including a rare earth-transition metal alloy amorphous film and at least one of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, B, Al, C and Si or a boride or carbide uniformly dispersed in the rare earth-transition metal alloy amorphous film, a protective layer, a liquid lubricant layer, and a nonmagnetic substrate. The soft magnetic under layer, the intermediate layer, the magnetic recording layer, and the protective layer are built up in a predetermined order on the nonmagnetic substrate.
    • 即使在稀土 - 过渡金属合金非晶膜中的记录密度高的情况下,即使在生产率优异的情况下,也不会产生写入信号的移动或者丢失的垂直磁记录介质。 垂直磁记录介质包括软磁下层,中间层,包括稀土 - 过渡金属合金非晶膜和至少一种Ti,Zr,Hf,V,Nb,Ta,Cr,Mo的磁记录层 ,W,B,Al,C和Si或均匀分散在稀土 - 过渡金属合金非晶膜,保护层,液体润滑剂层和非磁性基底中的硼化物或碳化物。 软磁性层,中间层,磁记录层和保护层在非磁性基板上以预定顺序构成。