Magnetic recording apparatus

摘要

According to an embodiment, a magnetic recording apparatus includes following elements. The spin torque oscillator generates a first oscillating magnetic field. The recording medium unit includes one or more recording medium layers which are stacked, each of the one or more recording medium layers including a recording medium and spin-wave lines each of which generates a second oscillating magnetic field. The write magnetic field source generates a write magnetic field. The controller is configured to control the spin torque oscillator, the spin-wave lines, and the write magnetic field source to simultaneously apply the write magnetic field, and the first and second oscillating magnetic fields to target medium magnetization in the recording medium.

主权项

1. A magnetic recording apparatus comprising:
a spin torque oscillator which generates a first oscillating magnetic field; a recording medium unit comprising one or more recording medium layers which are stacked, each of the one or more recording medium layers including a recording medium and a plurality of spin-wave lines which are provided opposite the recording medium and each of which generates a second oscillating magnetic field; a write magnetic field source which generates a write magnetic field; and a controller which drives the spin torque oscillator and at least one of the plurality of spin-wave lines such that the first oscillating magnetic field and the second oscillating magnetic field are simultaneously applied to target medium magnetization in the recording medium on which data is to be recorded, to selectively reverse the target medium magnetization with the write magnetic field.