Thin film magnetic head with compound angled insulation layer

摘要

A magnetic head is fabricated with a thin film transducer including first and second magnetic layers, having an insulation layer defining a transducing gap between the pole tips of the magnetic layers, and a top insulating layer over the transducer for protecting the transducer from humidity and mechanical shock. The insulation gap layer is configured with a compound angled section of a baked resist insulation layer having a steep angular portion and a second angled portion of substantially the same slope preceding a substantially flat area. In this way, maximum contact is provided between the protective top insulation and the lower insulation gap layer in order to minimize cracking, without displacing the coil assembly from its preferred location close to zero throat so that optimum coil efficiency is obtained.