MAGNETIC HEAD AND ITS MANUFACTURE

摘要

PURPOSE:To suppress decomposition and a crack due to processing of a ferromagnetic metallic film caused by the machine processing by adopting a composite material magnetic core being the combination of a magnetic core made of an oxide magnetic material and a tip chip member imbedded with a ferromagnetic metallic film. CONSTITUTION:A magnetic core 30 of a ferromagnetic oxide magnetic substance of a high specific resistance made of an Mn-Zn single crystal ferrite is used as the major component of a magnetic circuit. A tip chip member 31 is adhered onto the magnetic core 30 by an adhesives 32. The tip chip member 31 is a separate member from the magnetic core 30 and adhered during the head manufacture process. The member 31 is formed by sandwiching a ferromagnetic metallic film 35 made of a Sendust film at the midpoint in the track width direction of side cores 33, 34 made of an oxide comprising an Mn-Zn single crystal ferrite. The member 31 having a sandwich structure of the cores 33, 34 and the film 35 in the track broadwise direction has a thickness (t) in the gap depth direction.