Effect of magnetic saturation on reproducing characteristics of magnetoresistive heads

The reproducing characteristics of a magnetoresistive head were studied. Using a two-dimensional finite element method, recording density characteristics and peak shift characteristics of the MR head were estimated with a saturation effect. Recording density characteristics changed with the magnetic saturation of the MR element with a large remanent magnetization and thickness product of the recording medium, but peak shift was not affected by it. Compared with the gap length dependence of the inductive head, the MR head had a lower D₅₀ and smaller peak shift than did the inductive head