The Effects of Parking Time, Temperature, and Slider Position on Lubricant Migration in Hard Disk Drives

Author

Youyi Fu ; Brunner, Ralf ; Jih-Ping Peng ; Apte, Julia ; McFadyen, James ; Talke, Frank E.

Author_Institution

Center for Magn. Recording Res., Univ. of California at San Diego, La Jolla, CA, USA

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

Abstract

Drive-level lubricant migration tests were carried out to study the effects of parking time, temperature, and slider position on lubricant migration in a hard disk drive. The change in head medium spacing after parking the head was determined from read-back signal measurements using the Wallace equation. Time-of-flight secondary ion mass spectrometry was used to correlate the change in head medium spacing with the amount of lubricant migrating to the air-bearing surface during parking. The change in head medium spacing as a function of parking time, temperature, and slider position is determined.

Keywords

disc drives; hard discs; lubricants; magnetic heads; secondary ion mass spectra; Wallace equation; air-bearing surface; drive-level lubricant migration tests; hard disk drives; head medium spacing; parking time effects; read-back signal measurements; slider position; temperature effects; time-of-flight secondary ion mass spectrometry; Cavity resonators; Films; Head; Lubricants; Magnetic heads; Temperature measurement; Tribology; Head medium spacing; lubricant migration; parking time; slider position; temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2318677

Filename

6802396