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。

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。

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。

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。

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。

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。

公开(公告)号：US07005202B2

公开(公告)日：2006-02-28

申请号：US10631768

申请日：2003-08-01

申请人： Tetsuya Kanbe ,  Yotsuo Yahisa ,  Yoshibumi Matsuda ,  Jo Inagaki ,  Koji Sakamoto

发明人： Tetsuya Kanbe ,  Yotsuo Yahisa ,  Yoshibumi Matsuda ,  Jo Inagaki ,  Koji Sakamoto

IPC分类号： G11B5/66 ,  G11B5/70

CPC分类号： G11B5/7325 ,  G11B5/00 ,  G11B5/656 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12854 ,  Y10T428/12944

摘要： The longitudinal magnetic recording medium includes a non-magnetic substrate, a first underlayer having at least one of an amorphous structure and a fine crystal structure formed on the non-magnetic substrate, a second underlayer having a body-centered cubic structure formed on the first underlayer, a third underlayer having a hexagonal closed packed structure formed on the second underlayer, and a magnetic layer having the hexagonal closed packed structure formed on the third underlayer, wherein the third underlayer is composed of an alloy containing Co and Ru.

公开(公告)号：US06692843B2

公开(公告)日：2004-02-17

申请号：US09784078

申请日：2001-02-16

申请人： Yoshibumi Matsuda ,  Akira Ishikawa ,  Yotsuo Yahisa ,  Yuzuru Hosoe ,  Tetsuya Kanbe ,  Koji Sakamoto

发明人： Yoshibumi Matsuda ,  Akira Ishikawa ,  Yotsuo Yahisa ,  Yuzuru Hosoe ,  Tetsuya Kanbe ,  Koji Sakamoto

IPC分类号： G11B573

CPC分类号： G11B5/7325 ,  G11B5/8404 ,  Y10T428/1266 ,  Y10T428/12667

摘要： A magnetic recording medium having first undercoating layers 40, 40′ formed directly or via substrate face undercoating layers on a substrate 40, second undercoating layers 42, 42′ directly formed on the first undercoating layers 40, 40′, magnetic films 43, 43′ formed on the second undercoating layers 42, 42′, and protective films 44, 44′ formed on the magnetic films 43, 43′. Clusters having a large amount of oxygen are dispersed on the boundary face of the first and second undercoating layers. Preferably, the first undercoating layer is made of an alloy which includes two kinds of elements in which the difference between oxide formation standard free energies &Dgr;G° of the elements at the temperature of 250° C. is large.

摘要翻译： 一种磁记录介质，其具有直接形成在衬底40上的衬底表面底涂层形成的第一底涂层40,40'，直接形成在第一底涂层40,40'上的第二底涂层42,42'，磁性膜43,43' 形成在第二底涂层42,42'上，以及形成在磁性膜43,43'上的保护膜44,44'。 具有大量氧的簇分散在第一和第二底涂层的边界面上。 优选地，第一底涂层由包含两种元素的合金制成，其中在250℃的温度下元素的氧化物形成标准自由能的差ΔG°大。

公开(公告)号：US06623874B2

公开(公告)日：2003-09-23

申请号：US09888523

申请日：2001-06-26

申请人： Tetsuya Kanbe ,  Yotsuo Yahisa ,  Yoshibumi Matsuda ,  Jo Inagaki ,  Koji Sakamoto

发明人： Tetsuya Kanbe ,  Yotsuo Yahisa ,  Yoshibumi Matsuda ,  Jo Inagaki ,  Koji Sakamoto

IPC分类号： G11B566

CPC分类号： G11B5/7325 ,  G11B5/00 ,  G11B5/656 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12854 ,  Y10T428/12944

摘要： The longitudinal magnetic recording medium includes a non-magnetic substrate, a first underlayer having at least one of an amorphous structure and a fine crystal structure formed on the non-magnetic substrate, a second underlayer having a body-centered cubic structure formed on the first underlayer, a third underlayer having a hexagonal closed packed structure formed on the second underlayer, and a magnetic layer having the hexagonal closed packed structure formed on the third underlayer, wherein the third underlayer is composed of an alloy containing Co and Ru.

公开(公告)号：US06756113B2

公开(公告)日：2004-06-29

申请号：US10077880

申请日：2002-02-20

申请人： Yoshibumi Matsuda ,  Koji Sakamoto ,  Tetsuya Kanbe ,  Yotsuo Yahisa

发明人： Yoshibumi Matsuda ,  Koji Sakamoto ,  Tetsuya Kanbe ,  Yotsuo Yahisa

IPC分类号： G11B566

CPC分类号： G11B5/7325 ,  G11B5/66 ,  G11B5/84 ,  Y10S428/90 ,  Y10T428/12465 ,  Y10T428/12861 ,  Y10T428/12931 ,  Y10T428/265

摘要： A magnetic recording medium includes a first underlying film of a NiTa alloy having a nonmagnetic amorphous structure and formed on a nonmagnetic substrate, and a second underlying film made of an alloy containing Cr and Ti, further a first magnetic film of a CoCrPt alloy, a nonmagnetic intermediate film of Ru and a second magnetic film of a CoCrPtB alloy that are serially formed over the first underlying film, wherein oxygen locally exists in an interface between the first underlying film and the second underlying film.

摘要翻译： 磁记录介质包括具有非磁性无定形结构并形成在非磁性基底上的NiTa合金的第一底膜，以及由含有Cr和Ti的合金制成的第二底膜，另外还有CoCrPt合金的第一磁性膜， Ru的非磁性中间膜和CoCrPtB合金的第二磁性膜，其顺序地形成在第一底层膜上，其中氧局部存在于第一底层膜和第二底膜之间的界面中。