Abstract
Head-media interface of CoCr and metal particle stretched recording disks is investigated using a slotted spherical slider. Acoustic emission output of the stretched disk scarcely depends on the flying height. Frictional coefficient in high speed region of the stretched disks is higher than that of a rigid disk which is almost zero. In contrast the coefficient in low speed region are lower than that of the rigid disk. These peculiar running behavior must be based on elasticity of the stretched medium. The change of spacing is less than 0.1μm below 6m/sec of running speed. Using the slotted spherical slider with the optimal radius of curvature even the CoCr stretched disk shows the durability over 100 million passes. These results suggest the possibility of a high density recording disk system based on such "quasi-contact head-media interface".
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