抄録
Magnetic data storage possesses the potential for extremely high bit density exceeding 1 Tb/cm2 or about 10 Tb/inch2, which corresponds to storing each bit into each ferromagnetic fine particle composing a magnetic storage medium. We call this perpendicular spinic storage (PSS)' because this tremendous potential of extremely high bit density could only be established by perpendicularly magnetizing ferromagnetic particles, or parallel spin clusters, arranged systematically and oriented perpendicularly on a substrate. The possibility and the background of terabit PSS in magnetic storage technology are discussed from the viewpoint of theoretical considerations and the current situation in high density recording. To approach this tremendous possibility, main-pole thick width (MPTW) recording of several hundreds nanometer in width and dispersive writing and collective reading (DWCR) with a multiple-track head are proposed.
