Abstract
In this paper, we investigate the feasibility of using a magnetic force microscopy scheme for recording and retrieving magnetic marks for ultrahigh-density, ultralow power applications. We will address the main design considerations while designing such a system. Then, using the impulse-response and inverse-convolution technique, we deduce a novel tip trajectory for the optimum recording process. We will also apply extensive optimization for a Co/sub x/Cr/sub y/Pt/sub 1-x-y/ perpendicular media structure to maximize the signal-to-noise ratio (SNR). An areal density of up to 0.3 Tb/in/sup 2/ is shown to be achievable with thermally stable magnetic marks and a SNR of 20-25 dB in the existence of additional electronic noise.
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