Abstract
Thermal relaxation is becoming more and more significant associated with decreasing grain size of media to achieve high recording density. In this paper, a seperating read and write head system of a single-pole write head and an MR read head is used for experiments in order to examine time-decay of reproduced head output. Results of a simulation associated with curling switching model is also discussed. The experimental and theoretical study clarified that less decay takes place at higher densities in perpendicular magnetic recording. Dependence on some media parameters are also shown. Influence of a single-pole head to the decay is discussed in order to improve the head performance.
