Invention Application
WO2004017317A1 光磁気記録媒体及び光磁気記憶装置 审中-公开
磁光记录介质和磁光存储器件

  • Patent Title: 光磁気記録媒体及び光磁気記憶装置
  • Patent Title (English): Magneto-optical recording medium and magneto-optical storage device
  • Patent Title (中): 磁光记录介质和磁光存储器件
  • Application No.: PCT/JP2002/008252
    Application Date: 2002-08-13
  • Publication No.: WO2004017317A1
    Publication Date: 2004-02-26
  • Inventor: 細川 哲夫
  • Applicant: 富士通株式会社細川 哲夫
  • Applicant Address: 〒211-8588 神奈川県 川崎市 中原区上小田中4丁目1番1号 Kanagawa JP
  • Assignee: 富士通株式会社,細川 哲夫
  • Current Assignee: 富士通株式会社,細川 哲夫
  • Current Assignee Address: 〒211-8588 神奈川県 川崎市 中原区上小田中4丁目1番1号 Kanagawa JP
  • Agency: 松本 昂
  • Main IPC: G11B11/105
  • IPC: G11B11/105
光磁気記録媒体及び光磁気記憶装置
Abstract:
A magneto-optical recording medium comprising a substrate, a first recording layer mainly consisting of Tb and FeCo deposited on the substrate, dominant in compensation composition or transition metal at room temperature, and exhibiting perpendicular magnetization, and a second recording layer provided on the first recording layer, having compensation temperature of at least 100 °C, dominant in rare earth element at room temperature, and exhibiting perpendicular magnetization. Inequalities 60 °C Hc2.t2 are preferably satisfied, where Tc1 and Tc2 are Curie temperature of the first and second recording layers, Hc1 and Hc2 are the coercive force at room temperature, and t1 and t2 are film thickness.
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