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1. 发明授权

US08221192B2 Magnetic-recording-disk test-head and method of manufacturing a magnetic-recording disk using the magnetic-recording-disk test-head 有权
标题翻译：磁记录盘测试头和使用磁记录盘测试头制造磁记录盘的方法
公开(公告)号：US08221192B2
公开(公告)日：2012-07-17
申请号：US12537982
申请日：2009-08-07
申请人： Hidekazu Kashiwase , Hiroyuki Suzuki , Masae Suzuki, legal representative , Mitsuhiro Shoda , Takayoshi Ohtsu , Kiyoshi Hashimoto
发明人： Hidekazu Kashiwase , Hiroyuki Suzuki , Mitsuhiro Shoda , Takayoshi Ohtsu , Kiyoshi Hashimoto
IPC分类号： B24B49/00
CPC分类号： G11B5/8404 , G11B5/3136 , G11B5/455 , G11B5/6064
摘要： A magnetic-recording-disk test-head. The magnetic-recording-disk test-head includes a slider, a test pad and a slider-surface-shape control mechanism. The slider includes a leading edge and a trailing edge. The test pad is disposed at a trailing-edge side of the slider and is configured to remove and to detect asperities on a magnetic-recording disk. The slider-surface-shape control mechanism is configured to change a shape of an air-bearing surface of the slider and is disposed at a leading-edge side of the slider.
摘要翻译：磁记录盘测试头。磁记录盘测试头包括滑块，测试垫和滑块表面形状控制机构。滑块包括前缘和后缘。测试垫设置在滑块的后缘侧，并且被配置为移除并检测磁记录盘上的凹凸。滑块表面形状控制机构构造为改变滑块的空气轴承表面的形状并且设置在滑块的前缘侧。

2. 发明授权

US07876530B2 Magnetic recording medium having a cobalt-based alloy film for high density recording and magnetic storage device using same 有权
标题翻译：具有用于高密度记录的钴基合金膜和使用它的磁存储装置的磁记录介质
公开(公告)号：US07876530B2
公开(公告)日：2011-01-25
申请号：US12387164
申请日：2009-04-28
申请人： Tatsuya Hinoue , Yotsuo Yahisa , Tomoo Yamamoto , Jo Inagaki , Hiroyuki Suzuki , Masae Suzuki, legal representative , Hidekazu Kashiwase
发明人： Tatsuya Hinoue , Yotsuo Yahisa , Tomoo Yamamoto , Jo Inagaki , Hiroyuki Suzuki , Hidekazu Kashiwase
IPC分类号： G11B5/66 , B32B3/02
CPC分类号： G11B5/65 , G11B5/656 , G11B5/66 , H01F10/16 , H01F10/265
摘要： In one embodiment, a magnetic recording medium comprises an underlying film, a magnetic film and a protective film formed in this order on a substrate. The magnetic film is a cobalt-base alloy film containing chromium and has a plurality of magnetic layers stacked without interposition of any non-magnetic layer. The plural magnetic layers comprise first, second and third magnetic layers. The first magnetic layer is disposed between the underlying film and the second magnetic layer. The second magnetic layer is disposed between the first magnetic layer and the third magnetic layer. The third magnetic layer is disposed between the second magnetic layer and the protective film. The concentration of chromium contained in the first magnetic layer is lower than that of chromium contained in the second magnetic layer. The thickness of the first magnetic layer is smaller than that of the second magnetic layer. The magnetic layers which overlie the first magnetic layer further contain platinum and boron. The concentration of chromium contained in the third magnetic layer is lower than that of chromium contained in the second magnetic layer.
摘要翻译：在一个实施例中，磁记录介质包括在衬底上依次形成的下面的膜，磁性膜和保护膜。磁性膜是含有铬的钴基合金膜，并且具有堆叠而不插入任何非磁性层的多个磁性层。多个磁性层包括第一，第二和第三磁性层。第一磁性层设置在下面的膜和第二磁性层之间。第二磁性层设置在第一磁性层和第三磁性层之间。第三磁性层设置在第二磁性层和保护膜之间。第一磁性层中含有的铬的浓度低于第二磁性层中含有的铬的浓度。第一磁性层的厚度小于第二磁性层的厚度。覆盖在第一磁性层上的磁性层还含有铂和硼。第三磁性层中含有的铬的浓度低于第二磁性层中含有的铬的浓度。

3. 发明授权

US08169728B2 Magnetic medium having an artificial pattern structure using a gradient of a magnetization reversal field and a method of use thereof 有权
标题翻译：具有使用磁化反转场的梯度的人造图案结构的磁性介质及其使用方法
公开(公告)号：US08169728B2
公开(公告)日：2012-05-01
申请号：US12630728
申请日：2009-12-03
申请人： Hiroaki Nemoto , Hiroyuki Suzuki , Masae Suzuki, legal representative , Miki Hara , Yoshio Suzuki
发明人： Hiroaki Nemoto , Hiroyuki Suzuki , Miki Hara , Yoshio Suzuki
IPC分类号： G11B5/09 , G11B5/596 , G11B5/82
CPC分类号： G11B5/82 , B82Y10/00 , G11B5/59616 , G11B5/743 , G11B5/855
摘要： To avoid the occurrence of a recording error by suppressing the influence that a magneto-static interaction acting between the pattern dots exerts on a recording process and expand a margin for recording synchronization timing lag or tracking misregistration on the pattern dot. Each pattern dot has a structure in which a plurality of parts having different magnetization reversal fields are bonded with exchange interaction in the in-plane direction of a medium, substrate. The positional relationship between the parts having different magnetization reversal fields is substantially coincident between the adjacent pattern dots, which are arranged to have a gradient of magnetization reversal field in a track direction or track transverse direction. Further, the recording is performed by adapting a gradient of recording magnetic field to the gradient of magnetization reversal field. Other methods and systems are described as well.
摘要翻译：通过抑制作用在图形点之间的磁静电相互作用在记录处理上并且扩大用于记录同步定时滞后或跟踪图案点上的重合失调的余量的影响，避免了记录错误的发生。每个图案点具有其中具有不同磁化反转场的多个部分在介质，衬底的面内方向上以交换相互作用结合的结构。具有不同的磁化反转场的部分之间的位置关系在相邻的图形点之间基本一致，相邻的图形点被布置成在轨道方向或轨道横向方向上具有磁化反转场的梯度。此外，通过使记录磁场的梯度适应于磁化反转场的梯度来进行记录。还描述了其他方法和系统。

4. 发明申请

US20060292401A1 Magnetic recording medium for high density recording 有权
标题翻译：用于高密度记录的磁记录介质
公开(公告)号：US20060292401A1
公开(公告)日：2006-12-28
申请号：US11415604
申请日：2006-05-01
申请人： Hiroyuki Suzuki , Hidekazu Kashiwase , Akira Morinaga , Tatsuya Hinoue
发明人： Hiroyuki Suzuki , Hidekazu Kashiwase , Akira Morinaga , Tatsuya Hinoue
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/66
摘要： A bit error rate is improved and, at the same time, an aging change due to thermal fluctuation is decreased. In one embodiment, a magnetic recording medium has first, second, third, and fourth magnetic layers stacked over the underlayer film on a substrate. The product (Brt2) of the residual magnetic flux density and film thickness of the second magnetic layer is smaller than the product (Brt3) of the residual magnetic flux density and film thickness of the third magnetic layer. The second magnetic layer has a thickness larger than that of the third magnetic layer and is anti-ferromagnetically coupled with the first magnetic layer by way of the first non-magnetic intermediate layer. The fourth magnetic layer is formed by way of a second non-magnetic intermediate layer above the third magnetic layer. The product (Brt4) of the residual magnetic flux density and film thickness of the fourth magnetic layer is from about 47% to 52% of the product (Brt_total) of the residual magnetic flux density and film thickness of the entire magnetic layers in a state of residual magnetization with the external magnetic field removed.
摘要翻译：改善了误码率，同时由于热波动引起的老化变化也降低。在一个实施例中，磁记录介质具有层叠在基底上的下层膜上的第一，第二，第三和第四磁性层。第二磁性层的剩余磁通密度和膜厚的乘积（Brt2）小于第三磁性层的剩余磁通密度和膜厚的乘积（Brt3）。第二磁性层的厚度大于第三磁性层的厚度，并通过第一非磁性中间层与第一磁性层反铁磁耦合。第四磁性层通过在第三磁性层上方的第二非磁性中间层形成。剩余磁通密度和第四磁性层的膜厚的乘积（Brt4）为剩余磁通密度的乘积的约47％至52％（Brt_total）和处于整个状态的整个磁性层的膜厚度的剩余磁化与外部磁场去除。

5. 发明申请

US20060228588A1 Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：US20060228588A1
公开(公告)日：2006-10-12
申请号：US11400736
申请日：2006-04-06
申请人： Hiroyuki Suzuki , Hidekazu Kashiwase , Tatsuya Hinoue , Tomoo Yamamoto
发明人： Hiroyuki Suzuki , Hidekazu Kashiwase , Tatsuya Hinoue , Tomoo Yamamoto
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/66
摘要： A magnetic recording material is provided which has high medium S/N, and provides excellent overwriting characteristic, excellent thermal fluctuation and sufficient stability against thermal fluctuation. In one embodiment, a first underlayer comprising one of alloys of a Ti—Co alloy, a Ti—Co—Ni alloy, and an Ni—Ta alloy, a second underlayer comprising a W—Co alloy or Ta, and a third underlayer of a body-centered cubic structure comprising a Cr—Ti—B alloy or a Cr—Ti alloy are disposed over a substrate. A first magnetic layer comprising a Co—Cr—B alloy or a Co—Cr—Ta alloy, a second magnetic layer comprising a Co—Cr—Pt—B—Ta alloy, a third magnetic layer comprising a Co—Cr—Pt—B alloy, and a protective film are disposed further thereover. An intermediate region (Th) is disposed between the second magnetic layer and the third magnetic layer, the intermediate region having a higher oxygen concentration than those of the magnetic layers.
摘要翻译：提供具有高介质S / N的磁记录材料，并提供优异的重写特性，优异的热波动和对热波动的足够的稳定性。在一个实施例中，包括Ti-Co合金，Ti-Co-Ni合金和Ni-Ta合金的合金之一的第一底层，包含W-Co合金或Ta的第二底层和第三底层将包含Cr-Ti-B合金或Cr-Ti合金的体心立方结构设置在基板上。包含Co-Cr-B合金或Co-Cr-Ta合金的第一磁性层，包含Co-Cr-Pt-B-Ta合金的第二磁性层，包含Co-Cr-Pt- B合金和保护膜进一步配置。中间区域（Th）设置在第二磁性层和第三磁性层之间，中间区域的氧浓度高于磁性层的氧浓度。

6. 发明授权

US06887565B2 Magnetic recording medium and magnetic storage device 失效
公开(公告)号：US06887565B2
公开(公告)日：2005-05-03
申请号：US10306361
申请日：2002-11-27
申请人： Tetsuya Kanbe , Yotsuo Yahisa , Hiroyuki Suzuki , Hidekazu Kashiwase
发明人： Tetsuya Kanbe , Yotsuo Yahisa , Hiroyuki Suzuki , Hidekazu Kashiwase
IPC分类号： G11B5/738 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73 , G11B5/70
CPC分类号： G11B5/7325 , G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12854 , Y10T428/265
摘要： An inplane magnetic recording medium having high S/N and thermal stability and a reliable magnetic storage device having surface recording density of 50 megabit/mm2 or more is described. The magnetic recording medium includes magnetic layers formed on a nonmagnetic substrate with a plurality of ground layers therebetween, at least one of the ground layers formed from an alloy of a body-centered cubic structure containing Cr as a main component and B of from 2 atomic % to 12 atomic %. Main components of the magnetic layers include a lower magnetic layer containing Co and Cr of from 10 atomic % to 16 atomic %, with film thickness of from 1.5 nm to 4.5 nm, and an upper magnetic layer containing Co, coupling anti-ferromagnetically with the lower magnetic layer through nonmagnetic intermediate layers.

7. 发明授权

US07267894B2 Magnetic recording medium and magnetic recording apparatus 失效
标题翻译：磁记录介质和磁记录装置
公开(公告)号：US07267894B2
公开(公告)日：2007-09-11
申请号：US10656746
申请日：2003-09-04
申请人： Tetsuya Kanbe , Tatsuya Hinoue , Yotsuo Yahisa , Hidekazu Kashiwase , Hiroyuki Suzuki
发明人： Tetsuya Kanbe , Tatsuya Hinoue , Yotsuo Yahisa , Hidekazu Kashiwase , Hiroyuki Suzuki
IPC分类号： G11B5/66 , G11B5/70
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/66
摘要： A magnetic recording apparatus including a drive unit to drive the magnetic recording medium, a compound-type magnetic head, a means to move the magnetic head relative to the magnetic recording medium, and a means to process recording and retrieving signals generated by the magnetic head. The magnetic recording medium comprises a non-magnetic substrate and a magnetic layer formed thereon with three underlayers interposed inbetween. The magnetic layer is composed of a plurality of layers of Co-based alloy of hexagonal close-packed structure which are antiferromagnetically coupled to one another through a non-magnetic intermediate layer, said three underlayers including an amorphous alloy layer, a Ta layer, and a Cr-based alloy layer of body-centered cubic structure.
摘要翻译：一种磁记录装置，包括驱动磁记录介质的驱动单元，复合型磁头，磁头相对于磁记录介质移动的装置，以及处理由磁头产生的信号的记录和检索装置。磁记录介质包括非磁性基底和形成在其上的三层底层之间的磁性层。磁性层由多层通过非磁性中间层反铁磁耦合的六方密堆积结构的Co基合金层构成，所述三个底层包括非晶合金层，Ta层和体心立方结构的Cr基合金层。

8. 发明申请

US20050164037A1 Magnetic recording medium and magnetic storage device 失效
标题翻译：磁记录介质和磁存储装置
公开(公告)号：US20050164037A1
公开(公告)日：2005-07-28
申请号：US11072042
申请日：2005-03-03
申请人： Tetsuya Kanbe , Yotsuo Yahisa , Hiroyuki Suzuki , Hidekazu Kashiwase
发明人： Tetsuya Kanbe , Yotsuo Yahisa , Hiroyuki Suzuki , Hidekazu Kashiwase
IPC分类号： G11B5/738 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73
CPC分类号： G11B5/7325 , G11B5/66 , Y10S428/90 , Y10T428/12465 , Y10T428/12854 , Y10T428/265
摘要： An inplane magnetic recording medium having high S/N and thermal stability and a reliable magnetic storage device having surface recording density of 50 megabit/mm2 or more is described. The magnetic recording medium includes magnetic layers formed on a nonmagnetic substrate with a plurality of ground layers therebetween, at least one of the ground layers formed from an alloy of a body-centered cubic structure containing Cr as a main component and B of from 2 atomic % to 12 atomic %. Main components of the magnetic layers include a lower magnetic layer containing Co and Cr of from 10 atomic % to 16 atomic %, with film thickness of from 1.5 nm to 4.5 nm, and an upper magnetic layer containing Co, coupling anti-ferromagnetically with the lower magnetic layer through nonmagnetic intermediate layers.
摘要翻译：描述了具有高S / N和热稳定性的内置磁记录介质和具有50兆比特/平方毫米或更高的表面记录密度的可靠的磁存储装置。磁记录介质包括形成在非磁性基底上的磁性层，其间具有多个接地层，至少一个接地层由以Cr为主要成分的体心立方结构的合金形成，B为2原子％至12原子％。磁性层的主要成分包括含有10〜16原子％的Co和Cr的下部磁性层，膜厚度为1.5nm〜4.5nm，以及含有Co的上部磁性层，反铁磁共振通过非磁性中间层降低磁性层。

9. 发明授权

US06830837B2 Magnetic recording medium and magnetic recording apparatus 失效
标题翻译：磁记录介质和磁记录装置
公开(公告)号：US06830837B2
公开(公告)日：2004-12-14
申请号：US10046987
申请日：2002-01-17
申请人： Tetsuya Kanbe , Hiroyuki Suzuki , Yotsuo Yahisa , Yoshiyuki Hirayama , Hidekazu Kashiwase
发明人： Tetsuya Kanbe , Hiroyuki Suzuki , Yotsuo Yahisa , Yoshiyuki Hirayama , Hidekazu Kashiwase
IPC分类号： G11B566
CPC分类号： G11B5/7325 , G11B5/66 , Y10S428/90 , Y10T428/1121 , Y10T428/12465 , Y10T428/12854 , Y10T428/12861
摘要： It is an object of the present invention to provide a high reliability magnetic storage apparatus capable of performing writing and reading back of high density information. The magnetic storage apparatus is so configured as to have a longitudinal magnetic recording medium including: a magnetic layer formed on a non-magnetic substrate via a plurality of underlayers; the magnetic layer including a lower magnetic layer containing Ru in an amount of not less than 3 at % to not more than 30 at %, and Cr in an amount of not less than 0 at % to not more than 18 at %, and further containing at least one of B or C in an amount of not less than 0 at % to not more than 20 at %, and an upper magnetic layer containing Co as a main component disposed thereon via a non-magnetic intermediate layer.
摘要翻译：本发明的目的是提供一种能够执行高密度信息的写入和读回的高可靠性磁存储装置。磁存储装置被配置为具有纵向磁记录介质，其包括：通过多个底层在非磁性基板上形成的磁性层; 所述磁性层包括含有不小于3原子％至不超过30原子％的量的Ru的下磁性层，并且不少于0原子％至不大于18原子％的Cr，含有不小于0at％至不超过20at％的B或C中的至少一个，以及经由非磁性中间层设置在其上的Co作为主要成分的上磁性层。

10. 发明授权

US07532436B2 Magnetic recording medium and magnetic memory device for high density recording 有权
标题翻译：用于高密度记录的磁记录介质和磁存储器件
公开(公告)号：US07532436B2
公开(公告)日：2009-05-12
申请号：US11223603
申请日：2005-09-09
申请人： Tatsuya Hinoue , Hidekazu Kashiwase , Hiroyuki Suzuki , Tomoo Yamamoto
发明人： Tatsuya Hinoue , Hidekazu Kashiwase , Hiroyuki Suzuki , Tomoo Yamamoto
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/31 , G11B5/656 , G11B5/66
摘要： A longitudinal magnetic recording medium having a high medium S/N, with no problems in view of the overwrite characteristic, excellent in the bit error rate and sufficiently stable also to thermal fluctuations is provided. In one embodiment, a first underlayer, second underlayer, and a third underlayer are formed on a substrate and, further, a first magnetic layer, a spacer layer including Ru as a main ingredient, a second magnetic layer, and a third magnetic layer are formed in adjacent with each other in this order. The thickness of the second magnetic layer is made larger than the thickness of the third magnetic layer and the total for the concentrations of cobalt and platinum obtained in the second magnetic layer is not more than the total for the concentrations of cobalt and platinum contained in the third magnetic layer.
摘要翻译：提供具有高介质S / N的纵向磁记录介质，考虑到重写特性没有问题，具有优异的误码率和足够稳定的热波动。在一个实施例中，在基板上形成第一底层，第二底层和第三底层，此外，第一磁性层，包括Ru作为主要成分的间隔层，第二磁性层和第三磁性层是以这种顺序彼此相邻地形成。使第二磁性层的厚度大于第三磁性层的厚度，并且在第二磁性层中获得的钴和铂的浓度的总和不超过包含在第二磁性层中的钴和铂的浓度的总和第三磁性层。

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