Challenges for Perpendicular Write Heads at High Recording Density

Author

Hsu, Yimin ; Nikitin, Vladimir ; Hsiao, David ; Chen, Jianping ; Zheng, Yi ; Pentek, Aron ; Loo, Jennifer ; Jiang, Ming ; Yuan, Samuel ; Alex, Michael ; Luo, Yansheng ; Salo, Michael ; Okada, Tomohiro ; Maruyama, Youji ; Mitsuoka, Katsuya

Author_Institution

Hitachi Global Storage Technol., San Jose, CA

Volume

43

Issue

2

fYear

2007

Firstpage

605

Lastpage

608

Abstract

Perpendicular recording technology has become the main stream for 130 Gb/in² HDD products. In this paper, challenges in perpendicular write head are discussed. Design tradeoffs and concerns of narrow-track single-pole heads, trailing shield heads, floating TS heads, and wrapped-around-shield (WAS) heads are discussed. Experimental data show that WAS heads provide good narrow track and high linear density performance. An areal density of 343 Gb/in² has been achieved at a very aggressive magnetic spacing condition

Keywords

disc drives; hard discs; magnetic heads; perpendicular magnetic recording; HDD; floating TS heads; narrow-track single-pole heads; perpendicular recording technology; perpendicular write heads; recording density; trailing shield heads; wrapped-around-shield heads; Magnetic flux leakage; Magnetic heads; Magnetic recording; Magnetic separation; Magnetic shielding; Perpendicular magnetic recording; Saturation magnetization; Shape; Testing; Writing; Perpendicular magnetic recording; test and characterization; write heads;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.888199

Filename

4069023