US Patent 7522378 Magnetic head for perpendicular magnetic writing

Provided is a magnetic head including a perpendicular magnetic head to write information by a perpendicular magnetic writing method. The perpendicular magnetic head has a return pole, a writing pole having a predetermined distance from the return pole and including a first pole portion and a second pole portion that are separated from each other and a connection pole portion connecting the first and second pole portions, and an induction writing coil inducing the formation of a magnetic field on the writing pole. According to the provided perpendicular magnetic head, the effect of eddy current is reduced by improving the structure of the writing pole, thus the intensity of a magnetic field obtained in a high frequency band is similar to the intensity of a magnetic field obtained in a low frequency band and a large field gradient is obtained.