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1. 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。

2. 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。

3. 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。

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

US08257845B2 Magnetic recording medium utilizing a recording layer having more and less concentrated parts of a nonmagnetic element in an in-plane direction and a nonmagnetic layer 有权
标题翻译：利用记录层的磁记录介质，其具有在面内方向上具有越来越少的非磁性元件的集中部分和非磁性层
公开(公告)号：US08257845B2
公开(公告)日：2012-09-04
申请号：US12378120
申请日：2009-02-10
申请人： Tatsuya Hinoue , Hiroshi Kanai , Toshinori Ono , Hiroyuki Suzuki , Hiroshi Inaba
发明人： Tatsuya Hinoue , Hiroshi Kanai , Toshinori Ono , Hiroyuki Suzuki , Hiroshi Inaba
IPC分类号： G11B5/66
CPC分类号： G11B5/66 , G11B5/855
摘要： Embodiments of the present invention help to produce discrete track media and bit patterned media having both excellent recording and reproducing performance and reliability. According to one embodiment, a manufacturing method forms a nonmagnetic layer mainly composed of the same element as a nonmagnetic element contained in magnetic recording layers and on the magnetic recording layers and a mask layer having apertures for forming more concentrated parts of the nonmagnetic element in the magnetic recording layers on the nonmagnetic layer. The method implants ions of the nonmagnetic element through the nonmagnetic layer masked by the mask layer to form the more concentrated parts of the nonmagnetic element in the magnetic recording layer.
摘要翻译：本发明的实施例有助于产生具有优异的记录和再现性能和可靠性的离散轨道介质和位图案化介质。根据一个实施例，制造方法形成主要由与磁记录层中包含的非磁性元件相同的元件和磁记录层的非磁性层和具有用于形成非磁性元件的更集中部分的孔的掩模层非磁性层上的磁记录层。该方法通过由掩模层掩蔽的非磁性层注入非磁性元件的离子，以形成磁记录层中的非磁性元件的更集中的部分。

7. 发明授权

US07704613B2 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：US07704613B2
公开(公告)日：2010-04-27
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。

8. 发明申请

US20090214898A1 MAGNETIC RECORDING MEDIUM AND MANUFACTURING METHOD THEREOF 有权
标题翻译：磁记录介质及其制造方法
公开(公告)号：US20090214898A1
公开(公告)日：2009-08-27
申请号：US12378120
申请日：2009-02-10
申请人： Tatsuya Hinoue , Hiroshi Kanai , Toshinori Ono , Hiroyuki Suzuki , Hiroshi Inaba
发明人： Tatsuya Hinoue , Hiroshi Kanai , Toshinori Ono , Hiroyuki Suzuki , Hiroshi Inaba
IPC分类号： G11B5/62 , G11B5/84
CPC分类号： G11B5/66 , G11B5/855
摘要： Embodiments of the present invention help to produce discrete track media and bit patterned media having both excellent recording and reproducing performance and reliability. According to one embodiment, a manufacturing method forms a nonmagnetic layer mainly composed of the same element as a nonmagnetic element contained in magnetic recording layers and on the magnetic recording layers and a mask layer having apertures for forming more concentrated parts of the nonmagnetic element in the magnetic recording layers on the nonmagnetic layer. The method implants ions of the nonmagnetic element through the nonmagnetic layer masked by the mask layer to form the more concentrated parts of the nonmagnetic element in the magnetic recording layer.
摘要翻译：本发明的实施例有助于产生具有优异的记录和再现性能和可靠性的离散轨道介质和位图案化介质。根据一个实施例，制造方法形成主要由与磁记录层中包含的非磁性元件相同的元件和磁记录层的非磁性层和具有用于形成非磁性元件的更集中部分的孔的掩模层非磁性层上的磁记录层。该方法通过由掩模层掩蔽的非磁性层注入非磁性元件的离子，以形成磁记录层中的非磁性元件的更集中的部分。

9. 发明申请

US20090214895A1 Magnetic recording medium and manufacturing method thereof 有权
标题翻译：磁记录介质及其制造方法
公开(公告)号：US20090214895A1
公开(公告)日：2009-08-27
申请号：US12378777
申请日：2009-02-18
申请人： Tatsuya Hinoue , Hiroshi Kanai , Toshinori Ono , Hiroyuki Suzuki , Hiroshi Inaba
发明人： Tatsuya Hinoue , Hiroshi Kanai , Toshinori Ono , Hiroyuki Suzuki , Hiroshi Inaba
IPC分类号： G11B5/66 , C23C14/04
CPC分类号： G11B5/855 , C23C14/3414 , C23C30/00 , G11B5/66 , H01F41/34
摘要： Embodiments of the present invention produce discrete track media and bit patterned media having both excellent read/write performance and reliability. According to one embodiment, the medium comprises a magnetic layers formed by at least two ferromagnetic alloy layers with different compositions on a substrate. The ferromagnetic alloy layer located closest to the medium surface has more concentrated parts and less concentrated parts of nonmagnetic element in the in-plane direction. The more concentrated parts of the nonmagnetic element contain more nonmagnetic elements than the other parts except for an intermediate layer in the magnetic recording layer. The more concentrated parts and the less concentrated parts of the nonmagnetic element in the ferromagnetic alloy layer located closest to the medium surface are formed substantially concentric. The more concentrated parts of the nonmagnetic element is formed by being doped with ions of nonmagnetic element.
摘要翻译：本发明的实施例产生具有优异的读/写性能和可靠性的离散轨道介质和位图案化介质。根据一个实施例，介质包括由衬底上具有不同组成的至少两个铁磁性合金层形成的磁性层。位于最靠近介质表面的铁磁合金层在面内方向具有更多的集中部分和更少的非磁性元件的集中部分。除了磁记录层中的中间层之外，非磁性元件的集中部分比其他部分含有更多的非磁性元件。位于最靠近介质表面的铁磁性合金层中的非磁性元件的集中部分和较不集中的部分基本上是同心的。通过掺杂非磁性元素的离子形成非磁性元件越集中的部分。

10. 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。

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