公开(公告)号：US11848034B2

公开(公告)日：2023-12-19

申请号：US17541794

申请日：2021-12-03

Applicant: Western Digital Technologies, Inc.

Inventor： Yingjian Chen ,  Yonghua Chen ,  Anna Zheng ,  Zhanjie Li ,  Yi Wang ,  Jian Xiang Shen ,  Lijie Guan

IPC: G11B5/31 ,  G11B5/127 ,  G11B5/39

CPC classification number: G11B5/3113 ,  G11B5/1278 ,  G11B5/315 ,  G11B5/3146 ,  G11B5/3912

Abstract: The present disclosure generally relates to magnetic recording devices with stable magnetization. The magnetic recording device comprises a lower leading shield, an upper leading shield disposed on the lower leading shield, a main pole disposed above the upper leading shield, a trailing shield disposed above the main pole and upper leading shield, and an upper return pole disposed above the trailing shield. A first non-magnetic layer is disposed between the lower leading shield and the upper leading shield, and a second non-magnetic layer is disposed between the trailing shield and the upper return pole. The lower leading shield has a different domain state than the upper leading shield, and the trailing shield and the upper leading shield have a same domain state. The materials and thickness of the first and second non-magnetic layers result in magnetostatic coupling or anti-ferromagnetic coupling.