| 摘要 |
PROBLEM TO BE SOLVED: To provide a perpendicular magnetic recording system, in which magnetization switching time at write pole is shortened using an auxiliary coil and a circuitry. SOLUTION: The perpendicular magnetic recording system includes a write head having a main coil (write coil) and a main pole (write pole) that direct write flux in a direction perpendicular to the recording layer in the magnetic recording medium, and an auxiliary coil and an auxiliary pole that inject magnetic flux into the write pole at an angle to the primary or perpendicular axis of the write pole. The additional flux from the auxiliary pole, which is injected non-parallel to the primary magnetization of the write pole, exerts a relatively large torque on the magnetization of the write pole, thereby facilitating magnetization reversal of the write pole. Electrical circuitry is connected to the main coil and the auxiliary coil to generate the auxiliary flux simultaneously with the switching of the magnetization of the write pole. COPYRIGHT: (C)2011,JPO&INPIT
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