Alternate air bearing slider designs for areal density of 1 Tb/in 2
Journal
IEEE Transactions on Magnetics
Journal Volume
42
Journal Issue
2
Pages
241-246
Date Issued
2006
Author(s)
Abstract
To achieve the areal density goal in hard disk drives of 1 Tb/in/sup 2/ the minimum physical spacing or flying height (FH) between the read/write transducer and disk must be reduced to about 2 nm. At such low spacing new nanoscale forces act between the slider and disk, such as intermolecular and electrostatic forces, which must be taken into consideration in the air bearing design. These forces increase the level of flying height modulations (FHMs), which in turn creates dynamic instability and intermittent contact in the flying head slider similar to what has been observed in experiments. Here, we present three possible approaches to minimize such forces and/or reduce FHM by FH control, including a micro-trailing pad slider, a thermal flying height control slider, and a piezoelectric flying height control slider for hard disk drives.
SDGs
Type
conference paper