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    • 9. 发明授权
    • Information recording medium
    • 信息记录介质
    • US08435619B2
    • 2013-05-07
    • US13060396
    • 2010-02-22
    • Takashi NishiharaRie KojimaAkio TsuchinoNoboru Yamada
    • Takashi NishiharaRie KojimaAkio TsuchinoNoboru Yamada
    • G11B7/241
    • G11B7/24038G11B7/2578G11B7/259G11B7/266G11B2007/24312G11B2007/24314G11B2007/24316G11B2007/25715Y10T428/21
    • An information recording medium (9) of the present invention is an information recording medium with respect to which information can be recorded or reproduced by irradiation with an optical beam (1). The information recording medium (9) includes a second interface layer (103), a recording layer (104) and a first interface layer (105) in this order from the optical beam (1) incident side. The first interface layer (105) and the second interface layer (103) are disposed in contact with the recording layer (104). The second interface layer (103) contains M1 (where M1 is at least one element selected from Nb, Y, Dy, Ti, Si and Al), Cr and oxygen (O). The first interface layer (105) contains M2 (where M2 is at least one element selected from Nb, Y, Dy, Ti, Si, Al, Zr and Hf), Cr and oxygen (O). The first interface layer (105) and the second interface layer (103) each contain Cr in a range of 50 mol % or less in terms of the oxide (Cr2O3).
    • 本发明的信息记录介质(9)是信息记录介质,通过用光束(1)的照射可以记录或再现信息。 信息记录介质(9)从光束(1)入射侧依次包括第二接口层(103),记录层(104)和第一界面层(105)。 第一界面层(105)和第二界面层(103)设置成与记录层(104)接触。 第二界面层(103)含有M1(其中M1为选自Nb,Y,Dy,Ti,Si和Al中的至少一种元素),Cr和氧(O)。 第一界面层(105)含有M2(其中,M2为选自Nb,Y,Dy,Ti,Si,Al,Zr和Hf中的至少一种元素),Cr和氧(O)。 第一界面层(105)和第二界面层(103)各自含有以氧化物(Cr 2 O 3)换算为50摩尔%以下的Cr。