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Experimental and theoretical studies of bump formation during laser texturing of Ni-P disk substrates

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7 Author(s)
Tam, A.C. ; IBM Res. Div., Almaden Res. Center, San Jose, CA, USA ; Pour, I.K. ; Nguyen, T. ; Krajnovich, D.
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We provide here extended experimental data on the bump shape formed on Ni-P disk substrate under various laser and substrate surface conditions, and describe a model for the Sombrero-shape bump formation based on competition between thermocapillary and chemicapillary flows. This model rationalizes a large body of experimental data and provides insight into how one might tailor bump shapes to specific requirements. For comparison, laser bump formation on non-Ni-P substrates has also been studied

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Magnetics, IEEE Transactions on  (Volume:32 ,  Issue: 5 )