公开(公告)号：US12094497B1

公开(公告)日：2024-09-17

申请号：US18240250

申请日：2023-08-30

Applicant: Headway Technologies, Inc.

Inventor： Shehrin Sayed ,  Wenyu Chen ,  Yue Liu ,  Kowang Liu ,  Tetsuya Roppongi ,  Haowen Ren ,  Yuhui Tang ,  Moris Musa Dovek ,  Wenjie Chen

IPC: G11B5/23 ,  G11B5/39

CPC classification number: G11B5/23 ,  G11B5/3906 ,  G11B2005/3996

Abstract: The present embodiments can generally provide a magnetic write head structure with optimized gap current distribution to maximize the current-assisted areal density capacity (ADC) gain in hard-disk-drive storage devices. In a first example embodiment, a non-dual-write-shield (nDWS) write head can include a main pole (MP), a trailing shield (TS), and a write gap (WG) disposed between the MP and the TS. The write head can also include a side shield (SS), a leading shield (LS), and a write shield (WS). The write head can include a side gap (SG) between the MP and the SS on both sides of the MP tip, and a leading gap (LG) between the MP and the LS. The write head can also include a coil wrapped around the MP through a PP3 shield that is configured to direct a time-dependent write current to saturate magnetization of the MP.