Comparison of a shielded "One-sided" planar hall-transducer with an MR-head

The resistance anisotropy in ferromagnetic conductors gives rise to the related planar magneto-resistive and Hall-effects. The magneto-resistive effect is exploited in several field sensing transducers, while the planar Hall-effect is not. In this paper the output of direct sensing Hall-heads is compared with magneto-resistive heads for a number of situations typical for magnetic recording. The comparison is based on a computational procedure which can be executed with the help of a simple calculator. The procedure and the results are presented in such a way that known results for magneto-resistive transducers can immediately be translated into results for Hall-transducers.