A Theoretical Solution for the Magnetic Field in the Vicinity of a Recording Head Air Gap [Letter to the Editor]

The problem of determining the characteristics of a magnetic field in the vicinity of a recording head air gap can be idealized to represent a boundary-value problem, as shown in Fig. 1. Here, the pole pieces are at potentials +π and −π, respectively. A solution already exists for those cases where π = 0 and π = π/2.