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

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6 Author(s)
Lin, C.D. ; Trace Storage Technol. Corp., Hsinchu, Taiwan ; Fan, C.C. ; Lin, J.S. ; Ward Huang
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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

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Magnetics, IEEE Transactions on  (Volume:35 ,  Issue: 5 )