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    • 7. 发明授权
    • Magnetic recording medium
    • 磁记录介质
    • US6027801A
    • 2000-02-22
    • US54491
    • 1998-04-03
    • Tsuyoshi MaroKazuyoshi AdachiNaoki KitagakiOsamu IshizakiHideo Daimon
    • Tsuyoshi MaroKazuyoshi AdachiNaoki KitagakiOsamu IshizakiHideo Daimon
    • G11B5/73G11B5/66
    • G11B5/7325Y10S428/90Y10T428/26Y10T428/265
    • The present invention provides a magnetic recording medium with distinguished SNR and mechanical characteristics, which comprises an underlayer, a ferromagnetic thin film metallic layer and a protective film layer successively and continuously laminated on a non-magnetic resin substrate, where (A) at least one layer selected from the group consisting of an Si layer, an Si.sub.w N.sub.x C.sub.y O.sub.z layer and an Al.sub.w N.sub.x C.sub.y O.sub.z layer and (B) at least one layer selected from the group consisting of silicides, nitrides, oxides or their mixtures of Ti, Ta, Mo, V, Zr and their alloys are laminated on the non-magnetic resin substrate in the order of (A) and (B) or (i) a layer composed of at least one material selected from the group consisting of Ti, Ta, Mo, V, Zr, Nb and their alloys, (ii) at least one layer selected from the group consisting of an Si layer, an Si.sub.w N.sub.x C.sub.y O.sub.z layer and an Al.sub.w N.sub.x C.sub.y O.sub.z layer (where w+x+y+z=100 at. %, w.gtoreq.30 at. %, 0 .ltoreq.z.ltoreq.50 at. % and x+y.gtoreq.20 at. %), and (iii) a layer composed of at least one material selected from the group consisting of Ti, Ta, Mo, V, Zr and their alloys are laminated on the non-magnetic resin substrate in the order of (i), (ii) and (iii), between the non-magnetic resin substrate and the underlayer.
    • 本发明提供了具有卓越的SNR和机械特性的磁记录介质,其包括在非磁性树脂基板上连续层压的底层,铁磁薄膜金属层和保护膜层,其中(A)至少一个 选自Si层,SiwNxCyOz层和AlwNxCyOz层的层,以及(B)选自由Ti,Ta,Mo,V,Zr的硅化物,氮化物,氧化物或它们的混合物组成的组中的至少一个层 并且以(A)和(B)的顺序将它们的合金层叠在非磁性树脂基板上,或者(i)由选自Ti,Ta,Mo,V,Zr中的至少一种材料构成的层 ,Nb及其合金,(ii)至少一层选自Si层,SiwNxCyOz层和AlwNxCyOz层(其中w + x + y + z = 100原子%,w> / = 30 在%,0≤z≤50at。%和x + y> / = 20 at。%),和(iii)至少由 在非磁性树脂基板上以(i),(ii)和(iii)的顺序将非磁性材料选自Ti,Ta,Mo,V,Zr及其合金中的一种材料, 树脂基材和底层。
    • 8. 发明申请
    • Information-recording medium
    • 信息记录介质
    • US20080260985A1
    • 2008-10-23
    • US12068531
    • 2008-02-07
    • Hiroshi ShiraiKazuyoshi AdachiOsamu IshizakiTsuyoshi Onuma
    • Hiroshi ShiraiKazuyoshi AdachiOsamu IshizakiTsuyoshi Onuma
    • G11B7/24
    • G11B7/24038G11B2007/24312G11B2007/24314G11B2007/24316
    • An information-recording medium includes first and second recording layers each of which is formed of a phase-change material containing Bi, Ge, and Te, wherein the first recording layer is arranged nearer to a light-incident side of the laser beam than the second recording layer; a composition of Bi, Ge, and Te contained in the second recording layer is within a composition range surrounded by composition points B2, C2, D2, D6, C6, and B6 on a triangular composition diagram of Bi, Ge, and Te; and a difference (α−δ) between a composition α of Bi in the first recording layer and a composition δ of Bi in the second recording layer is −1.0 to 3.0 at. %. Thus, there is provided a two-layered information-recording medium with high recording-data reliability and excellent repeated-data recording durability.
    • 信息记录介质包括第一和第二记录层,每个记录层由包含Bi,Ge和Te的相变材料形成,其中第一记录层被布置成比激光束的光入射侧更靠近激光束的光入射侧 第二记录层; 包含在第二记录层中的Bi,Ge和Te的组成在组成点B 2,C 2,D 2,D 6,C 6和B 6的组成范围内,Bi的三角形组成图上, Ge,Te; 并且第一记录层中Bi的组成α和第二记录层中Bi的组成δ之差(α-δ)为-1.0至3.0at。 %。 因此,提供了具有高记录数据可靠性和优异的重复数据记录耐久性的双层信息记录介质。