公开(公告)号：EP1406247A4

公开(公告)日：2007-08-29

申请号：EP01932224

申请日：2001-05-23

申请人： FUJITSU LTD

发明人： INAMURA RYOSAKU ,  SHIMODA KAZUMASA ,  SUGIMOTO TOSHIO ,  UZUMAKI TAKUYA

IPC分类号： G11B5/00 ,  G11B5/012 ,  G11B5/66 ,  G11B5/667 ,  G11B5/73 ,  G11B5/82 ,  G11B5/02 ,  G11B11/10

CPC分类号： G11B5/7325 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/64 ,  G11B5/66 ,  G11B5/82 ,  G11B2005/0002 ,  G11B2005/0021 ,  G11B2005/0029

摘要： A vertical recording type magnetic recording medium which includes at least a vertical magnetic recording layer and a backing layer which backs the vertical magnetic recording layer and is magnetized in a direction toward the inside of the surface. The backing layer is made of ferromagnetic materia1 which has a compensation temperature in the neighborhood of a recording/reproducing temperature at which magnetic information, recorded in the vertica1 magnetic recording layer, is reproduced.

公开(公告)号：EP1411500A4

公开(公告)日：2007-04-04

申请号：EP01945668

申请日：2001-06-28

申请人： FUJITSU LTD

发明人： SUGIMOTO TOSHIO

IPC分类号： G11B5/00 ,  G11B5/02 ,  G11B5/024 ,  G11B5/65 ,  G11B5/66 ,  G11B7/00 ,  G11B11/105 ,  G11B5/738 ,  G11B11/10

CPC分类号： G11B5/66 ,  G11B5/02 ,  G11B11/10573 ,  G11B11/10578 ,  G11B11/10584 ,  G11B2005/0002 ,  G11B2005/0021

摘要： A method for recording magnetic information on the recording layer of a magnetic recording medium by means of a magnetic head while heating the recording layer with light shone from an optical head, comprising a first step of moving the magnetic head to a desired position on the magnetic recording medium having a magnetic layer for positioning the optical head, a second step of supplying a field Hr for positioning the optical head from the magnetic head to the magnetic layer for positioning, and a third step of outputting a light Pr for positioning the optical head therefrom to generate a magnetooptic effect between the optical head and the magnetic layer for positioning magnetized by the positioning field Hr and controlling the optical head to face the position of the magnetic head based on a detection value of magnetooptic effect.

公开(公告)号：EP2605626A4

公开(公告)日：2017-03-08

申请号：EP10855897

申请日：2010-08-12

申请人： FUJITSU LTD

发明人： SUGIMOTO TOSHIO ,  KONDO REIKO

IPC分类号： H05K7/20

CPC分类号： F28F9/00 ,  H05K7/20572 ,  H05K7/20581

公开(公告)号：EP1560203A4

公开(公告)日：2005-10-19

申请号：EP03705362

申请日：2003-02-20

申请人： FUJITSU LTD

发明人： INAMURA RYOSAKU ,  TAKESHITA HIROTO ,  SUGIMOTO TOSHIO ,  SHIMODA KAZUMASA ,  OSHIMA TAKENORI ,  MAEDA MAKI ,  UZUMAKI TAKUYA ,  TANAKA ATSUSHI

IPC分类号： B32B1/00 ,  G11B5/64 ,  G11B5/65 ,  G11B5/667 ,  G11B5/73

CPC分类号： B32B1/00 ,  G11B5/65 ,  G11B5/667 ,  G11B5/7325

摘要： A nonmagnetic second orientation control layer (37) spreading on the surface of a magnetic first orientation control layer (36) is composed of crystal grains contiguous to each other. A recording magnetic layer (38) spreading on the surface of the second orientation control layer (37) is composed of crystal grains growing from individual crystal grains of the second orientation control layer (37). Crystal orientation of the recording magnetic layer (38) is arranged sufficiently through action of the first and second orientation control layers (36, 37). Crystal orientation can be controlled surely by the recording magnetic layer (38) as compared with a case where only the nonmagnetic second orientation control layer (37) having the same film thickness is employed. Furthermore, film thickness of the second orientation control layer (37) can be reduced through action of the first orientation control layer (36). Sufficient orientation can be established in the recording magnetic layer (38) regardless of a reduction in the film thickness of the second orientation control layer (37) and high electromagnetic conversion characteristics can be attained.

摘要翻译： 铺展在磁性第一取向控制层（36）表面上的非磁性第二取向控制层（37）由彼此相邻的晶粒组成。 铺展在第二取向控制层（37）表面上的记录磁性层（38）由从第二取向控制层（37）的各个晶粒生长的晶粒构成。 记录磁性层（38）的晶体取向通过第一和第二取向控制层（36,37）的作用充分地设置。 与仅使用具有相同膜厚度的非磁性第二取向控制层（37）的情况相比，通过记录磁性层（38）可以可靠地控制晶体取向。 此外，第二取向控制层（37）的膜厚可以通过第一取向控制层（36）的作用而减小。 无论第二取向控制层（37）的膜厚减小如何，都可以在记录磁性层（38）中建立足够的取向，并且可以获得高电磁转换特性。