CHARACTERIZATION OF THE HEAD-DISK INTERFACE FOR PROXIMITY RECORDING

Lubricant additives and nitrogenated carbon overcoat are frequently us ed for the head-disk interface (HDI) of the proximity recording techno logy. The results show that lubricant degradation can be reduced by lu bricant additives such as cyclic phosphazenes but excessive amount of the additive will accumulate on head and form marks on disk surface wh ich is detrimental for the drive performance. Use of nitrogenated carb on for overcoat makes it possible for tailoring the HDI by increasing the overcoat conductivity and modifying the bonded lubricant thickness .