Contamination build-up on ABS and its effects on read/write performance of near-contact recording systems

Author

Liu, Bo ; Hu, S.B. ; Soo, K.T. ; Wang, J.P. ; Ng, S.H. ; Lee, C.S.

Author_Institution

Data Storage Inst., Nat. Univ. of Singapore, Singapore

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

3884

Lastpage

3886

Abstract

This paper reports results of experimental investigations of contamination build-up on slider surfaces and its effects on the performance of tri-pad slider-based near-contact recording systems. Results indicate that the head-disk clearance changes, caused by contamination build-up, can be comparable to the designed head-disk clearance. As a result, the drive´s performance and reliability can be strongly affected. Results obtained show that the amount of increase in the value of transition region length parameter is greater than the corresponding increase in head-disk clearance. Consequently, the writing performance suffers more severe degradation than the read performance. This is shown by error-rate measurements at the drive level as well as PW50 and NLTS measurements at the component level

Keywords

error statistics; lubrication; magnetic heads; magnetic recording; magnetic recording noise; surface contamination; ABS contamination build-up; NLTS; PW50; air bearing surfaces; disk drive performance; disk drive reliability; error-rate measurements; flying height variation; head-disk clearance changes; lubricant; near-contact recording systems; read performance; read/write performance; slider surfaces; transition region length parameter; tri-pad slider; writing performance; Degradation; Disk drives; Disk recording; Error analysis; Lubricants; Magnetic recording; Pollution measurement; Surface contamination; Velocity measurement; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539205

Filename

539205