Title :
Analysis of Discharge Mechanism in HDD
Author :
Miyatake, Masami ; Kugiya, Fumio ; Kodama, Naoki
Author_Institution :
Hitachi Global Storage Technol. Japan, Ltd., Fujisawa, Japan
fDate :
6/1/2011 12:00:00 AM
Abstract :
This paper discusses a discharge mechanism between the head and disk in hard disk drive. The three phases of the discharge mechanism which depend on the voltage difference between the head and disk were observed. In phase 1, no electric discharge occurs. In phase 2, only electric discharge occurs. In phase 3, electric discharge occurs with physical contact of the head to the disk, which causes head reader damage and disk defect growth.
Keywords :
disc drives; discharges (electric); hard discs; HDD; discharge mechanism; electric discharge; hard disk drive; Current measurement; Discharges; Electrical resistance measurement; Magnetic heads; Noise; Resistance; Voltage measurement; Discharge; GMR head; TMR head; electrical breakdown; fluid dynamic bearing (FDB) motor; hard disk drive (HDD);
Journal_Title :
Device and Materials Reliability, IEEE Transactions on
DOI :
10.1109/TDMR.2011.2132133
