| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a TAMR (Thermal Assisted Magnetic Recording) head for high-density recording. <P>SOLUTION: The TAMR head includes a main magnetic pole, a plasmon antenna 22 including a core 24 formed of a magnetic material and a clad 27 formed of a non-magnetic conductive material, and an optical waveguide 23 that guides electromagnetic radiation from a light source to the plasmon antenna 22 to be coupled to a plasmon mode. The plasmon antenna 22 forms and maintains the plasmon mode therein, and also transfers energy generated in the plasmon mode to a local part of a magnetic recording medium to heat it, thereby reducing a coercive force and magnetic anisotropy. The intensity and gradient of the recording magnetic field in the heat spot on the magnetic medium are coupled to a profile of the heat energy of the plasmon mode to form an optimal situation for write operation. <P>COPYRIGHT: (C)2011,JPO&INPIT |
