| 摘要 |
There are provided a slider and a magnetic disk unit that can significantly reduce a variation in flying height caused by an air pressure change even if the size of the magnetic disk unit or the slider is small. An air bearing surface ( 1 ) which faces a disk medium includes, in the order from the air-inflow end ( 2 ) to the air-outflow end ( 3 ) of the air bearing surface: a front step bearing surface ( 9 ), a front-rail surface 6 which generates a positive pressure on the disk medium to float the slider, a negative-pressure cavity ( 11 ) which generates a negative pressure to reduce the flying height of the slider, a rear step bearing surface ( 10 ), a rear-rail surface ( 7 ) which generates a positive pressure, and a recording/reproducing element having surface ( 8 ) on which the recording/reproducing element ( 13 ) is provided, wherein a separating plane ( 103 ) which separates the recording/reproducing element having surface ( 8 ) from the rear-rail surface ( 7 ) is provided and the distance between the air-outflow end of the rear-rail surface ( 7 ) and the recording/reproducing element ( 13 ) is 5 to 10% of the slider length from the air-inflow end to the air-outflow end.
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