A new design for a high writing-sensitivity single-pole head is proposed. The head is driven with regular pancake structure dual coils, which sandwiches the main-pole. The outer parts of both coils are exposed to the air bearing surface. These coils can generate a cusp field with bifilar connection. A high recording sensitivity of this new head has been clarified by the fact that a small magneto-motive force of less than 0.1 AT 0 P can saturate a medium with a high-coercivity of 3.5 kOe.Index Terms-Inductive head, perpendicular magnetic recording, single-pole head.

No abstract

No abstract

The relationship between single-pole head design and recording resolution was investigated in perpendicular recording. It has been found from the computer simulation that it is useful to make a narrow separation between the main pole and the return yoke at the trailing side of the cusp-field single-pole-type (CF-SPT) head. A new head structure with an additive return yoke on the head surface was proposed to realize the aforementioned structure. The new head was fabricated by depositing the soft magnetic thin film onto the air-bearing surface of the CF-SPT head, followed by slitting the film along the main-pole edges by a focused-ion-beam system. As a result, the new head that modified a pole configuration improved 50 value about 25 kFCI compared with the original CF-SPT head.

No abstract