TOF-SIMS characterization of lubricants used in magnetic recording media

Zhang, Bin C.; Liu, Hui Kathy; Chang, S.

doi:10.1016/j.apsusc.2004.03.085

Cited by 5 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of their superior properties, such as low vapor pressure, suitable viscosity, high thermal stability and chemical inertness, perfluoroethers (PFPEs) have been extensively used as the lubricants for magnetic recording media in hard disk drives [9].…”

Section: Lubricantmentioning

confidence: 99%

Ruhenium as diffusion barrier for carbon overcoat of magnetic recording media

Wang¹

View full text Add to dashboard Cite

Degradation of the magnetic and tribology performances due to diffusion from carbon overcoat is one of the concerns for future magnetic recording media. In this work, a novel film structure with ruthenium (Ru) interlayer in between the magnetic layer and the carbon overcoat has been investigated. Introduction of an ultra-thin Ru diffusion barrier is aimed to prevent carbon diffusion and minimize magnetically dead layer formation. Selection of Ru film deposition process, impact of carbon on magnetic films, carbon diffusion behavior, barrier mechanism of Ru layer, characterization of carbon films deposited with Ru interlayer and their anti-corrosion performance are covered in the project. All carbon films are prepared by hot filament Plasma Enahnced Chemical Vapor Deposition, and other films are deposited by the magnetron sputtering technique. Ru films deposited at low Ar pressure and high sputtering power showed high density and low roughness. A working pressure lower than 10 mTorr and power density above 5.61 W/cm are desired for Ru film deposition as carbon diffusion barrier. With introduction of Ru as an interlayer of the carbon overcoat, the magnetic properties of CoCrTa and Co-Pt-TiC>2 films are more consistent because of impeded carbide formation and negligible carbon diffusion. Interface integrity is well maintained, and the degree of graphitization is reduced with the Ru barrier. Secondary Ion Mass Spectroscopy depth profiling studies confirm that carbon readily diffuses into the granular structure of the Co-Pt-TiC»2 film but the diffusion in Ru is limited to sub-surface. This is validated by tests at temperatures up to 200 °C. The diffusion of carbon in Co-Pt-TiCh is dominated by grain boundary diffusion but it is 5

show abstract

Section: Lubricantmentioning

confidence: 99%

Ruhenium as diffusion barrier for carbon overcoat of magnetic recording media

Wang¹

View full text Add to dashboard Cite

show abstract

Modification of surface properties of polyethylene by perfluoropolyether blending

Puukilainen

Pakkanen

2005

J Polym Sci B Polym Phys

View full text Add to dashboard Cite

The preparation of a stabile blend from thermoplastic polymer and lubricating additive was studied with high density polyethylene (HDPE) and perfluoropolyether (PFPE). PFPE was melt blended within HDPE by injection molding. The chemical composition of the mixtures, the relative amount of PFPE on the surface, and the nature of the surface were studied by three surface sensitive methods: attenuated total reflectance infrared (ATR‐IR) spectroscopy, secondary ion mass spectroscopy (SIMS), and contact angle (CA) measurement. All the blends exhibited improved hydrophobicity. CA and SIMS gave a maximum response when about 2.0 wt % PFPE was added, whereas ATR‐IR spectroscopy gave maximum response for an addition of about 3.0 wt %. No changes in surface properties were observed when samples were reanalyzed about 1–4 months after preparation. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 2252–2258, 2005

show abstract

TOF-SIMS analysis for thermal effect study of hard disk lubricant

Liew

Chong

2008

Applied Surface Science

View full text Add to dashboard Cite

TOF-SIMS characterization of lubricants used in magnetic recording media

Cited by 5 publications

References 7 publications

Ruhenium as diffusion barrier for carbon overcoat of magnetic recording media

Ruhenium as diffusion barrier for carbon overcoat of magnetic recording media

Modification of surface properties of polyethylene by perfluoropolyether blending

TOF-SIMS analysis for thermal effect study of hard disk lubricant

Contact Info

Product

Resources

About