公开(公告)号：WO1997031370A1

公开(公告)日：1997-08-28

申请号：PCT/US1997002835

申请日：1997-02-24

Applicant: DENSITEK CORPORATION

Inventor： DENSITEK CORPORATION ,  LAIRSON, Bruce ,  LIU, Wen, Hong

IPC: G11B05/66

CPC classification number: G11B5/732 ,  G11B5/656 ,  G11B5/66 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12493 ,  Y10T428/12861 ,  Y10T428/12875 ,  Y10T428/24975 ,  Y10T428/265

Abstract: A recording medium (36) for data storage has a plurality of adjoining thin layers which share a crystalline grain structure (46, 48), the layers alternating between a magnetic cobalt alloy layer (40, 42) and a noble metal layer (37, 39, 41). The magnetic layer includes a nonmagnetic element having a tendency to segregate toward grain boundaries (43, 45, 47), so that adjacent grains are exchange isolated, lowering noise of the medium that otherwise occurs due to intragranular coupling. The nonmagnetic element may be C, Cr, W, V, or preferably T. The medium has an easy axis of magnetization perpendicular to the layers, affording stable high density data storage.

Abstract translation: 用于数据存储的记录介质（36）具有共享一个晶粒结构（46,48）的多个相邻的薄层，这些层在磁性钴合金层（40,42）和贵金属层（37,40）之间交替， 39，41）。 磁性层包括具有偏离晶界（43,45,47）的趋势的非磁性元件，使得相邻的晶粒被交换隔离，降低由于颗粒间耦合而另外发生的介质的噪声。 非磁性元件可以是C，Cr，W，V或优选T.介质具有垂直于层的容易的磁化轴，提供稳定的高密度数据存储。