DC Current Path Optimization for Energy-Assisted Magnetic Recording
- Resource Type
- Conference
- Authors
- Bashir, Muhammad A.; Zheng, Anna; Goncharov, Alexander; Heijden, Paul V.D.; Song, Suping; Wei, Yaguang; Lam, Terence; Shi, Rick; Guan, Lijie
- Source
- 2022 IEEE 33rd Magnetic Recording Conference (TMRC) Magnetic Recording Conference (TMRC), 2022 IEEE 33rd. :1-3 Aug, 2022
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Photonics and Electrooptics
Signal Processing and Analysis
Magnetic flux
Perpendicular magnetic recording
Magnetic noise
Lead
Jitter
Hard disks
Marine vehicles
- Language
Energy assisted perpendicular magnetic recording (ePMR) technology was utilized to ship 18–20 TB hard disk drive (HDD) by Western Digital in 2020 and is considered to be the technology for the future nearline products [1]–[2]. Magnetic writer used in ePMR technology carry the DC current by utilizing main pole (MP) and trailing side shield (TS) as lead structure connected through a small stack inside the trailing side gap region. DC current flow inside the magnetic writer volume helps improve flux jitter [3].