Optimizing a current distribution in write heads for efficient energy-assisted magnetic recording

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United States of America

PATENT NO 12094497
SERIAL NO

18240250

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
HEADWAY TECHNOLOGIES INC678 S HILLVIEW DRIVE MILPITAS CA 95035

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chen, Wenjie Cupertino, US 127 1636
Chen, Wenyu San Jose, US 65 816
Dovek, Moris Musa San Jose, US 16 229
Liu, Kowang Fremont, US 38 565
Liu, Yue Fremont, US 361 3591
Ren, Haowen Fremont, US 12 0
Roppongi, Tetsuya San Jose, US 81 1304
Sayed, Shehrin Fremont, US 10 33
Tang, Yuhui Milpitas, US 75 1027

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