Inventors:
Winston Jose - Folsom CA, US
Rudy Ayala - San Jose CA, US
Niraj Mahadev - Tracy CA, US
Assignee:
SAE Magnetics (HK) Ltd. - Shatin, N.T.
International Classification:
G11B 5/127
H04R 31/00
US Classification:
29160316, 29417, 2960312, 2960313, 2960315, 2960318, 156268, 156344, 360230, 3602371, 438455, 438458, 438976, 451 5, 451 41
Abstract:
The overcoat of a slider (alumina) is recessed relative to the slider ABS by a non-abrasive CMP process sufficiently to prevent thermal protrusion of the overcoat during subsequent slider use in a hard disk drive. The CMP process involves the oscillatory and rotational compressional contact between the ABS surface of the slider and a polymerically pre-treated compliant pad that is sprayed by an aqueous alkali lubricating solution having a pH between about 9 and 10. The overcoat is thereby also softened by the lubricating solution and removed by the compressional contact and no use of abrasives is required.