Head disk interface dynamic stability analysis for surfing recording

Abstract

Fly and lubricant contact, or surfing recording, is one of interface solutions for 5∼10 Tb/in2 of magnetic recording. One of major challenges for surfing schemes comes from how to sustain the dynamic stability of the head disk interface (HDI). This paper explores the mechanism of slider's dynamic stability in surfing on the lubricant by means of an analytical model including air bearings, surface adhesion and slider-lubricant and slider-disk contacts. The basic design conditions for a stable surfing HDI are also discussed.