公开(公告)号：US20070122659A1

公开(公告)日：2007-05-31

申请号：US10582109

申请日：2005-08-09

Applicant: Hiroshi Osawa ,  Shun Matsumoto ,  Daizo Endo

Inventor： Hiroshi Osawa ,  Shun Matsumoto ,  Daizo Endo

IPC: G11B5/66

CPC classification number: G11B5/7325 ,  G11B5/656

Abstract: A magnetic recording medium includes an orientation adjusting layer, a nonmagnetic under layer, a nonmagnetic intermediate layer, a magnetic layer and a protective layer sequentially stacked on a nonmagnetic substrate provided on a first surface thereof with a texture streak and used for a magnetic disc. The nonmagnetic under layer contains at least a layer formed of a Cr—Mn-based alloy and possesses magnetic anisotropy having an axis of easy magnetization in a circumferential direction thereof. A magnetic recording and reproducing device includes the magnetic recording medium and a magnetic head for enabling information to be recorded in and reproduced from the magnetic recording medium.

Abstract translation: 磁记录介质包括顺序层叠在设置在其第一表面上的纹理条纹并用于磁盘的非磁性基板上的取向调整层，非磁性底层，非磁性中间层，磁性层和保护层。 非磁性底层至少包含由Cr-Mn基合金形成的层，并且具有在其圆周方向上具有易磁化轴的磁各向异性。 磁记录和再现装置包括磁记录介质和用于使信息能够被记录在磁记录介质中并从磁记录介质再现的磁头。

公开(公告)号：US07550211B2

公开(公告)日：2009-06-23

申请号：US10582109

申请日：2005-08-09

Applicant: Hiroshi Osawa ,  Shun Matsumoto ,  Daizo Endo

Inventor： Hiroshi Osawa ,  Shun Matsumoto ,  Daizo Endo

IPC: G11B5/66

CPC classification number: G11B5/7325 ,  G11B5/656

Abstract: A magnetic recording medium includes an orientation adjusting layer, a nonmagnetic under layer, a nonmagnetic intermediate layer, a magnetic layer and a protective layer sequentially stacked on a nonmagnetic substrate provided on a first surface thereof with a texture streak and used for a magnetic disc. The nonmagnetic under layer contains at least a layer formed of a Cr—Mn-based alloy and possesses magnetic anisotropy having an axis of easy magnetization in a circumferential direction thereof. A magnetic recording and reproducing device includes the magnetic recording medium and a magnetic head for enabling information to be recorded in and reproduced from the magnetic recording medium.

Abstract translation: 磁记录介质包括顺序层叠在设置在其第一表面上的纹理条纹并用于磁盘的非磁性基板上的取向调整层，非磁性底层，非磁性中间层，磁性层和保护层。 非磁性底层至少包含由Cr-Mn基合金形成的层，并且具有在其圆周方向上具有易磁化轴的磁各向异性。 磁记录和再现装置包括磁记录介质和用于使信息能够被记录在磁记录介质中并从磁记录介质再现的磁头。

公开(公告)号：US09053732B2

公开(公告)日：2015-06-09

申请号：US13344867

申请日：2012-01-06

Applicant: Amarendra Kumar Singh ,  Shun Matsumoto ,  Xiao Dong Chen ,  Hiroshi Kanazawa

Inventor： Amarendra Kumar Singh ,  Shun Matsumoto ,  Xiao Dong Chen ,  Hiroshi Kanazawa

IPC: B05D5/12 ,  G11B5/667 ,  G11B5/73 ,  G11B5/84 ,  H01F10/32

CPC classification number: G11B5/667 ,  G11B5/7325 ,  G11B5/8404 ,  H01F10/3272

Abstract: A method of forming a perpendicular magnetic recording medium. The perpendicular magnetic recording medium comprises a substrate, an underlayer on the substrate, an intermediate layer on the underlayer and a recording layer on the intermediate layer. The underlayer comprises a first soft underlayer, an antiferromagnetically coupled Ru layer on the first soft underlayer, a second soft underlayer on the antiferromagnetically coupled Ru layer, and an orientation control layer on the second soft underlayer, the method comprises applying a negative bias voltage to the substrate during formation of the underlayer.

Abstract translation: 一种形成垂直磁记录介质的方法。 垂直磁记录介质包括衬底，衬底上的底层，底层上的中间层和中间层上的记录层。 底层包括第一软底层，第一软底层上的反铁磁耦合Ru层，反铁磁耦合Ru层上的第二软底层和第二软底层上的取向控制层，该方法包括将负偏压施加到 衬底在底层的形成期间。