Abstract
In future high bit density for perpendicular recording, the conventional single pole head will not be able to record to the medium because the track should become narrow and coercivity of medium should become high. A 2 steps type of single pole head whose main pole has two tips is proposed. The field generated from the 2nd tip adds the recording field beneath the 1st tip. With the soft backlayer of medium, the superposed net field strength can be beyond the saturation flux density of used head material itself. The head has a potential to realize 1 Tbits/in^2 recording proposed by IBM.
