公开(公告)号：US20160055873A1

公开(公告)日：2016-02-25

申请号：US14857365

申请日：2015-09-17

Applicant: Seagate Technology LLC

Inventor： Thomas P. Nolan ,  Hans Richter

IPC: G11B5/66 ,  G11B5/84 ,  G11B5/74

CPC classification number: G11B5/66 ,  G11B5/65 ,  G11B5/746 ,  G11B5/82 ,  G11B5/84

Abstract: An apparatus may include a first magnetic layer, a first exchange break layer formed on the first magnetic layer, a second magnetic layer formed on the first exchange break layer, a second exchange break layer formed on the second magnetic layer, and a third magnetic layer formed on the second exchange break layer. The first magnetic layer has a first magnetic anisotropy energy, Hk1, the second magnetic layer has a second magnetic anisotropy energy, Hk2, and the third magnetic layer has a third magnetic anisotropy energy, Hk3. In some embodiments, Hk1−Hk2 is less than Hk2−Hk3. In some embodiments, the apparatus may be a perpendicular magnetic recording medium.

Abstract translation: 一种装置可以包括第一磁性层，形成在第一磁性层上的第一交换破坏层，形成在第一交换断裂层上的第二磁性层，形成在第二磁性层上的第二交换破坏层，第三磁性层 形成在第二交换断层上。 第一磁性层具有第一磁各向异性能H k1，第二磁性层具有第二磁各向异性能H k2，第三磁性层具有第三磁各向异性能H k3。 在一些实施方案中，Hk1-Hk2小于Hk2-Hk3。 在一些实施例中，该装置可以是垂直磁记录介质。

公开(公告)号：US09666221B2

公开(公告)日：2017-05-30

申请号：US14857365

申请日：2015-09-17

Applicant: Seagate Technology LLC

Inventor： Thomas P. Nolan ,  Hans Richter

IPC: G11B5/66 ,  G11B5/82 ,  G11B5/74 ,  G11B5/84 ,  G11B5/65

CPC classification number: G11B5/66 ,  G11B5/65 ,  G11B5/746 ,  G11B5/82 ,  G11B5/84

Abstract: An apparatus may include a first magnetic layer, a first exchange break layer formed on the first magnetic layer, a second magnetic layer formed on the first exchange break layer, a second exchange break layer formed on the second magnetic layer, and a third magnetic layer formed on the second exchange break layer. The first magnetic layer has a first magnetic anisotropy energy, Hk1, the second magnetic layer has a second magnetic anisotropy energy, Hk2, and the third magnetic layer has a third magnetic anisotropy energy, Hk3. In some embodiments, Hk1−Hk2 is less than Hk2−Hk3. In some embodiments, the apparatus may be a perpendicular magnetic recording medium.