Title :
A Novel in Situ Monitoring Method for Head/Media Contact
Author :
Lin, Zhong-Heng ; Lam, Terence ; Che, Xiaodong ; Shteyn, Alex ; Huang, Weidong
Author_Institution :
Hitachi GST, San Jose, CA
fDate :
6/1/2007 12:00:00 AM
Abstract :
A new method to detect magnetic recording head/media contact point is introduced in this paper. By comparing it with a common method using an acoustic emission sensor, the new method is simple, but yet still effective enough to control fly high or clearance between head and disk so as to improve the performance of perpendicular magnetic recording (PMR) at ultra-high density. The method can be easily implemented on head/disk spin-stand testers or in hard disk drives
Keywords :
acoustic emission; disc drives; hard discs; magnetic heads; magnetic recording; acoustic emission sensor; hard disk drives; head-disk spin-stand testers; head-media contact point; in situ monitoring methods; perpendicular magnetic recording; Acoustic emission; Acoustic sensors; Acoustic signal detection; Acoustic testing; Hard disks; Magnetic heads; Magnetic recording; Magnetic sensors; Monitoring; Perpendicular magnetic recording; Disk drives; magnetic head; magnetic recording; perpendicular magnetic recording;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.893526
