Stiction improvement for sub-microinch glide height media using small crater laser bumps

Author

Lin, C.D. ; Fan, C.C. ; Lin, J.S. ; Huang, Ward ; Wang, C.M. ; Dong, Charles

Author_Institution

Trace Storage Technol. Corp., Hsinchu, Taiwan

Volume

35

Issue

5

fYear

1999

fDate

9/1/1999 12:00:00 AM

Firstpage

2433

Lastpage

2435

Abstract

The effect of smaller crater laser bumps on stiction performance was investigated in this paper. A Nd-YVO₄ laser and a green laser were employed to generate crater laser bumps on NiP/AlMg substrates. A stiction map for three different bump diameters was made to depict high stiction and normal stiction regions. It shows that smaller bump diameter is a good approach to meet both low stiction and low glide requirements. This is attributed to the reduction in radius of curvature at the top of the laser bump rim. A novel tilted crater laser bump providing good wear durability and low stiction was also evaluated

Keywords

aluminium alloys; hard discs; laser beam machining; magnesium alloys; nickel alloys; phosphorus alloys; stiction; surface texture; wear; Nd-YVO₄; NiP-AlMg; bump diameter; bump diameters; high stiction regions; normal stiction regions; radius of curvature; small crater laser bumps; stiction improvement; sub-microinch glide height media; tilted crater; wear durability; Atomic force microscopy; Atomic measurements; Force measurement; Laser stability; Laser theory; Magnetic heads; Optical design; Optical pulse generation; Shape; Tribology;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.800849

Filename

800849