System for testing magnetic head/disk interfaces

Details System for testing magnetic head/disk interfaces System for testing magnetic head/disk interfaces

G - Physics

11

B

352/13, 352/29.1

G11B 5/455 (2006.01) G01N 17/00 (2006.01) G01N 19/00 (2006.01) G11B 5/012 (2006.01) G11B 5/58 (2006.01) G11B 17/32 (2006.01) G11B 33/10 (2006.01)

Patent

CA 1242272

A B S T R A C T SYSTEM FOR TESTING MAGNETIC HEAD/DISK INTERFACES Method for measuring the properties of a slider/disk interface in a magnetic disk storage apparatus by measuring a triboelectric current flowing between disk and slider. Rotational speed is adjusted between 100 and 500 rpm so as to obtain a frictional contact between disk and slider. The shape of the tribo current curve obtained during the measuring time interval is analyzed. An early maximum of the tribo current amplitude and a subsequent continual decay indicates a good slider/disk interface and a long lifetime.

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