Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/81380
Title: Application of laser microetching in formation of air-bearing surface for magnetic head sliders
Authors: Lu, Y.F. 
Ye, K.D. 
Issue Date: 1996
Citation: Lu, Y.F.,Ye, K.D. (1996). Application of laser microetching in formation of air-bearing surface for magnetic head sliders. Materials Research Society Symposium - Proceedings 397 : 317-322. ScholarBank@NUS Repository.
Abstract: Laser-induced etching of polycrystalline Al2O3TiC material by a tightly-focused CW Ar ion laser has been investigated in a KOH solution with different concentrations. It is found that the KOH concentration can strongly affect the etching quality where low KOH concentration can result in rough and irregular patterns. The etching effect is also related to laser power and scanning speed. Laser-induced etching of polycrystalline Al2O3TiC in a KOH solution is found to be a photothermal reaction in which a threshold laser power exists. With an appropriate set of etching parameters, well defined grooves can be obtained with clean side walls and with an etching rate up to several hundred micrometers per second. It is also found that the grains in the polycrystalline Al2O3TiC material play an important role in the etching dynamics and etching quality. This etching process is believed to be applicable to the formation of a slider surface of magnetic heads in the future.
Source Title: Materials Research Society Symposium - Proceedings
URI: http://scholarbank.nus.edu.sg/handle/10635/81380
ISSN: 02729172
Appears in Collections:Staff Publications

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