Patent ID: 7486478
Filing Date: 2009-02-03
Classification: G11B

Abstract:
1. A magnetic head comprising: a first pole; a second pole spaced apart from the first pole; and an induction coil that induces a magnetic field in the first and second poles, wherein the first and second poles include a pole tip in which a leakage flux for recording is generated and a head yoke that guides the flux flowing in the poles; at least one implant for controlling a magnetic domain, the implant formed in at least one of the first and second poles; said at least one implant is disposed on the at least one of the first and second poles so as to either promote magnetization reversal of the magnetic domain or to reduce effects of stray fields on the magnetic domain; and the material for forming the at least one implant is a non-magnetic material or a magnetic material having a lower saturated magnetization Ms than the head yoke.