Alternative reciprocity relations for the read flux in magnetic recording theory

摘要

With the aid of reciprocity relations relating a magnetic (scalar or vector) potential and one of the magnetic field quantities (magnetic flux density or magnetic field strength), alternative expressions for the read flux of a magnetic recording head are derived. They express the read flux of the head as a weighted product, over the front plane of the head, of its write field and certain field quantities that are related to the recorded pattern of magnetization.