Error event analysis in perpendicular magnetic recording using double-layered medium

The error events for PR2ML system in perpendicular magnetic recording using double-layered medium with additive white Gaussian noise, jitter-like nois e and distortion due to low frequency cut-off are studied. The result shows that the error event "+ - +00" extremely increases as the cut-off frequenc y becomes high. The error events obtained by computer simulation are also c ompared with those obtained by the R/W experiments. It is clarified that th e simulated error events approximately correspond to the experimental resul ts. (C) 2001 Elsevier Science B.V. All rights reserved.