Dual Layer X-ray photoelectron spectroscopy model to simultaneously determine a PFPE/A20H lubricant mixture and carbon-Layer thicknesses on hard-disk magnetic media

Author

Spaulding, David ; Yang, Zunde ; Liu, Jia Jay

Author_Institution

MMC Technol., San Jose, CA, USA

Volume

41

Issue

10

fYear

2005

Firstpage

3040

Lastpage

3042

Abstract

New blends of complex lubricants have recently been introduced to help meet the increasing tribological demands being placed on the head-disk interface in hard-disk drives. A20H (Moresco), a hybrid molecule consisting of a perfluoropolyether (PFPE) lubricant (Z-Dol) and cyclic phosphazene (X1P), is one such lubricant used in combination with a simple PFPE (e.g., Z-Dol). This paper describes an X-ray photoelectron spectroscopy (XPS) method to simultaneously measure the thickness of each lubricant component, as well as the carbon layer thickness, via reference to the magnetic layer.

Keywords

X-ray photoelectron spectra; carbon; hard discs; lubricants; magnetic heads; magnetic multilayers; A20H carbon; ESCA; PFPE/A20H lubricant mixture; X-ray photoelectron spectroscopy; XPS; carbon layer thickness; cyclic phosphazene; hard-disk drive; hard-disk magnetic media; head-disk interface; magnetic layer; moresco; perfluoropolyether lubricant; Attenuation; Equations; Hard disks; Hydrocarbons; Lubricants; Measurement standards; Spectroscopy; Spine; Thickness measurement; Writing; A20H carbon; ESCA; X-ray photoelectron spectroscopy (XPS); lubricant; moresco; thickness;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.855262

Filename

1519200