Method of measuring coefficient of friction and head slider for magnetic medium drive

摘要

An adsorptive tangential force is measured at the moment when a slider has contacted or touched a receiving surface. The adsorptive tangential force is induced solely by the adsorption transmitted from the receiving surface to the slider. An overall tangential force transmitted from the receiving surface to the slider is measured when the slider is kept urged against the receiving surface. The coefficient of dynamic friction is calculated based on the differential between the thus measured overall and adsorptive tangential forces. The effect of the adsorption can be eliminated from the calculated coefficient of dynamic friction. It is possible to derive the coefficient of dynamic friction at a still higher accuracy.