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US06881496B2 Antiferromagnetically coupled magnetic recording medium possessing three coupled magnetic layers and magnetic storage apparatus 失效
具有三个耦合磁性层和磁存储装置的反铁磁耦合磁记录介质

  • Patent Title: Antiferromagnetically coupled magnetic recording medium possessing three coupled magnetic layers and magnetic storage apparatus
  • Patent Title (中): 具有三个耦合磁性层和磁存储装置的反铁磁耦合磁记录介质
  • Application No.: US10246980
    Application Date: 2002-09-19
  • Publication No.: US06881496B2
    Publication Date: 2005-04-19
  • Inventor: Iwao Okamoto
  • Applicant: Iwao Okamoto
  • Applicant Address: JP Kawasaki
  • Assignee: Fujitsu Limited
  • Current Assignee: Fujitsu Limited
  • Current Assignee Address: JP Kawasaki
  • Agency: Greer, Burns & Crain, Ltd.
  • Priority: JP2002-060942 20020306
  • Main IPC: G11B5/64
  • IPC: G11B5/64 ;  G11B5/66 ;  G11B5/673 ;  G11B5/738
Antiferromagnetically coupled magnetic recording medium possessing three coupled magnetic layers and magnetic storage apparatus
Abstract:
A magnetic recording medium has first, second and third magnetic layers having magnetization directions which are alternately antiparallel in a state where no external magnetic field is applied on the magnetic recording medium, with a first nonmagnetic layer interposed between the first and second magnetic layers and a second nonmagnetic layer interposed between the second and third magnetic layers. A relationship Ms2×t2
Abstract(Chinese):

磁记录介质具有第一，第二和第三磁性层，其磁化方向在不在外部磁场施加在磁记录介质上的状态下交替反平行，第一非磁性层介于第一和第二磁性层之间， 介于第二和第三磁性层之间的第二非磁性层。 其中Ms 1，Ms 2和Ms 3以及t 1，t 2和t 2的关系Ms 2 xt 2 <（Ms 1 xt 1 + Ms 3 xt 3）表示饱和磁化和第一， 和第三磁性层。

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