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1. 发明授权

US07517597B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US07517597B2
公开(公告)日：2009-04-14
申请号：US11012387
申请日：2004-12-14
申请人： Tatsuya Hinoue , Hiroyuki Suzuki , Tetsuya Kanbe , Koji Sakamoto
发明人： Tatsuya Hinoue , Hiroyuki Suzuki , Tetsuya Kanbe , Koji Sakamoto
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/66
摘要： Embodiments of the present invention provide a magnetic recording medium for use in high-reliable magnetic recording apparatus capable of reading/writing information with high density. In one embodiment, a magnetic recording apparatus includes a magnetic recording medium, a driver for driving the medium in a recording direction, a compound type magnetic head having an electromagnetic induction type magnetic head for recording and a spin-valve type magnetic head for reading in combination, a mechanism to move the head relative to the medium, and a read/write signal processing module for the head. The magnetic recording medium has a magnetic layer formed by way of a first underlayer, a second underlayer and a third underlayer on a substrate. The first underlayer comprises an alloy of an amorphous structure, the second underlayer comprises a W element or a W-containing alloy layer, the third underlayer comprises one or more Cr-based alloy layers of a body-centered cubic structure, and the magnetic layer comprises one or more Co-based alloy layers of a hexagonal close-packed structure.
摘要翻译：本发明的实施例提供一种用于能够以高密度读取/写入信息的高可靠性磁记录装置的磁记录介质。在一个实施例中，磁记录装置包括磁记录介质，用于在记录方向上驱动介质的驱动器，具有用于记录的电磁感应型磁头的复合型磁头和用于读取的旋转型磁头组合，相对于介质移动头的机构，以及用于头部的读/写信号处理模块。磁记录介质具有通过第一底层，第二底层和第三底层在基底上形成的磁性层。第一底层包括非晶结构的合金，第二底层包括W元素或含W合金层，第三底层包括一个或多个体心立方结构的Cr基合金层，并且磁性层包括一个或多个六方密堆积结构的Co基合金层。

2. 发明申请

US20050142389A1 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US20050142389A1
公开(公告)日：2005-06-30
申请号：US11012387
申请日：2004-12-14
申请人： Tatsuya Hinoue , Hiroyuki Suzuki , Tetsuya Kanbe , Koji Sakamoto
发明人： Tatsuya Hinoue , Hiroyuki Suzuki , Tetsuya Kanbe , Koji Sakamoto
IPC分类号： G11B5/738 , G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/66
摘要： Embodiments of the present invention provide a magnetic recording medium for use in high-reliable magnetic recording apparatus capable of reading/writing information with high density. In one embodiment, a magnetic recording apparatus includes a magnetic recording medium, a driver for driving the medium in a recording direction, a compound type magnetic head having an electromagnetic induction type magnetic head for recording and a spin-valve type magnetic head for reading in combination, a mechanism to move the head relative to the medium, and a read/write signal processing module for the head. The magnetic recording medium has a magnetic layer formed by way of a first underlayer, a second underlayer and a third underlayer on a substrate. The first underlayer comprises an alloy of an amorphous structure, the second underlayer comprises a W element or a W-containing alloy layer, the third underlayer comprises one or more Cr-based alloy layers of a body-centered cubic structure, and the magnetic layer comprises one or more Co-based alloy layers of a hexagonal close-packed structure.
摘要翻译：本发明的实施例提供一种用于能够以高密度读取/写入信息的高可靠性磁记录装置的磁记录介质。在一个实施例中，磁记录装置包括磁记录介质，用于在记录方向上驱动介质的驱动器，具有用于记录的电磁感应型磁头的复合型磁头和用于读取的自旋阀型磁头组合，相对于介质移动头的机构，以及用于头部的读/写信号处理模块。磁记录介质具有通过第一底层，第二底层和第三底层在基底上形成的磁性层。第一底层包括非晶结构的合金，第二底层包括W元素或含W合金层，第三底层包括一个或多个体心立方结构的Cr基合金层，并且磁性层包括一个或多个六方密堆积结构的Co基合金层。

3. 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。

4. 发明申请

US20050053805A1 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US20050053805A1
公开(公告)日：2005-03-10
申请号：US10856094
申请日：2004-05-28
申请人： Tatsuya Hinoue , Tetsuya Kanbe , Hiroyuki Suzuki , Tomoo Yamamoto
发明人： Tatsuya Hinoue , Tetsuya Kanbe , Hiroyuki Suzuki , Tomoo Yamamoto
IPC分类号： G11B5/64 , G11B5/65 , G11B5/66 , G11B5/73 , G11B5/738
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/66 , Y10T428/12931 , Y10T428/265
摘要： A magnetic recording medium capable of attaining high in-plane recording density of 100 Mbits or more per 1 mm2 is provided. Magnetic recording medium is provided in which underlayers, a first magnetic layer, a first intermediate layer, a second magnetic layer, a second intermediate layer, a third magnetic layer, a protection layer and lubrication layer are formed in this order above a substrate. Each of the third magnetic layer and the second magnetic layer comprises a Co-based alloy containing at least Pt, Cr and B. The concentration of Pt contained in the second magnetic layer is not more than that in the third magnetic layer.
摘要翻译：提供能够获得每1mm 2的100Mb以上的高面内记录密度的磁记录介质。提供磁性记录介质，其中在衬底上方依次形成底层，第一磁性层，第一中间层，第二磁性层，第二中间层，第三磁性层，保护层和润滑层。第三磁性层和第二磁性层中的每一个包含至少含有Pt，Cr和B的Co基合金。第二磁性层中所含的Pt的浓度不大于第三磁性层中的浓度。

5. 发明授权

US07273667B2 Longitudinal multi-layer magnetic recording medium 失效
标题翻译：纵向多层磁记录介质
公开(公告)号：US07273667B2
公开(公告)日：2007-09-25
申请号：US10856094
申请日：2004-05-28
申请人： Tatsuya Hinoue , Tetsuya Kanbe , Hiroyuki Suzuki , Tomoo Yamamoto
发明人： Tatsuya Hinoue , Tetsuya Kanbe , Hiroyuki Suzuki , Tomoo Yamamoto
IPC分类号： G11B5/716
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/66 , Y10T428/12931 , Y10T428/265
摘要： A magnetic recording medium capable of attaining high in-plane recording density of 100 Mbits or more per 1 mm2 is provided. Magnetic recording medium is provided in which underlayers, a first magnetic layer, a first intermediate layer, a second magnetic layer, a second intermediate layer, a third magnetic layer, a protection layer and lubrication layer are formed in this order above a substrate. Each of the third magnetic layer and the second magnetic layer comprises a Co-based alloy containing at least Pt, Cr and B. The concentration of Pt contained in the second magnetic layer is not more than that in the third magnetic layer.
摘要翻译：提供能够获得每1mm 2的100Mb以上的高平面内记录密度的磁记录介质。提供磁性记录介质，其中在衬底上方依次形成底层，第一磁性层，第一中间层，第二磁性层，第二中间层，第三磁性层，保护层和润滑层。第三磁性层和第二磁性层中的每一个包含至少含有Pt，Cr和B的Co基合金。第二磁性层中所含的Pt的浓度不大于第三磁性层中的浓度。

6. 发明授权

US07163756B2 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US07163756B2
公开(公告)日：2007-01-16
申请号：US10733928
申请日：2003-12-10
申请人： Tomoo Yamamoto , Yotsuo Yahisa , Tatsuya Hinoue , Hidekazu Kashiwase , Tetsuya Kanbe , Hiroyuki Suzuki
发明人： Tomoo Yamamoto , Yotsuo Yahisa , Tatsuya Hinoue , Hidekazu Kashiwase , Tetsuya Kanbe , Hiroyuki Suzuki
IPC分类号： G11B5/66
CPC分类号： G11B5/732 , G11B5/66 , G11B5/7325
摘要： A large-capacity, low-cost, longitudinal magnetic recording medium capable of ultra-high-density recording of 70 Gigabits or more per square inch is disclosed. The longitudinal magnetic recording medium of the present invention comprises a first seed layer, a second seed layer, a first underlayer, a second underlayer, and a magnetic layer, which are formed on a nonmagnetic substrate in this order. A material containing at least Al and any one of Ru and Re is used to form the second seed layer, and a material containing at least any one of Co and Ni and one or both of Al and Ti is used to form the first underlayer. It is also possible to use Cr or a Cr alloy containing Cr and at least one element selected from the constituent element group A consisting of Ti, Mo, and W for forming the second seed layer.
摘要翻译：公开了能够以每平方英寸70吉比特或更多的超高密度记录的大容量，低成本的纵向磁记录介质。本发明的纵向磁记录介质包括依次形成在非磁性基板上的第一种子层，第二籽晶层，第一底层，第二底层和磁性层。使用至少包含Al和Ru和Re中的任何一种的材料来形成第二种子层，并且使用包含Co和Ni中的至少一种以及Al和Ti中的一种或两种的材料来形成第一底层。也可以使用含有Cr的Cr或Cr合金和选自由Ti，Mo和W构成的构成元素组A中的至少一种元素来形成第二种子层。

7. 发明申请

US20060269793A1 Magnetic recording medium for longitudinal recording 审中-公开
标题翻译：用于纵向记录的磁记录介质
公开(公告)号：US20060269793A1
公开(公告)日：2006-11-30
申请号：US11440504
申请日：2006-05-24
申请人： Tatsuya Hinoue , Koji Sakamoto , Hiroyuki Suzuki , Takuya Kojima
发明人： Tatsuya Hinoue , Koji Sakamoto , Hiroyuki Suzuki , Takuya Kojima
IPC分类号： G11B5/66
CPC分类号： G11B5/7325 , G11B5/656 , G11B5/66
摘要： A longitudinal magnetic recording medium having high medium S/N ratio, no problem for overwriting characteristics, excellent bit error rate and also sufficient thermal stability is provided. In one embodiment, a medium has a substrate, an underlayer film formed above the substrate, a magnetic film formed by stacking a first magnetic layer, a second magnetic layer, a third magnetic layer, a non-magnetic intermediate layer and a fourth magnetic layer over the underlayer film, and a protective film formed over the magnetic film, in which each of the magnetic layers of the magnetic film comprises a cobalt-based alloy containing chromium, the first magnetic layer has the least thickness among all the magnetic layers, the second, the third and the fourth magnetic layer each further contain platinum and boron, Brt of the second magnetic layer is smaller than Brt of the third magnetic layer, Brt of the third magnetic layer is smaller than Brt of the fourth magnetic layer, and the ratio of Brt of the fourth magnetic layer to Brt of the entire magnetic film is within a range from about 40% to about 55%.
摘要翻译：提供具有高介质S / N比的纵向磁记录介质，不存在重写特性问题，优异的误码率和足够的热稳定性。在一个实施例中，介质具有衬底，在衬底上形成的下层膜，通过层叠第一磁性层，第二磁性层，第三磁性层，非磁性中间层和第四磁性层形成的磁性膜以及形成在磁性膜上的保护膜，其中磁性膜的每个磁性层包含含有铬的钴基合金，第一磁性层在所有磁性层中的厚度最小，第二磁性层的第三磁性层和第四磁性层的每一个都含有铂和硼，第二磁性层的Brt小于第三磁性层的Brt，第三磁性层的Brt小于第四磁性层的Brt，第四磁性层的Brt与整个磁性膜的Brt的比例在约40％至约55％的范围内。

8. 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。

9. 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。

10. 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。

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