| 摘要 |
A magnetic disc apparatus includes a double layered perpendicular recording medium including a soft magnetic underlayer and a perpendicular recording layer, which are formed on a substrate, and a perpendicular magnetic recording head including a main pole generating a recording magnetic field in a perpendicular direction, and an auxiliary pole connected to the main pole on a trailing side to the main pole and having a multilayered structure in which a nonmagnetic layer is sandwiched between magnetic layers. |
