Magnetic recording apparatus

Patent metadata

Field	Value
Publication number	US-9159342-B2
Application number	US-201414483552-A
Country	US
Kind code	B2
Filing date	Sep 11, 2014
Priority date	Sep 18, 2013
Publication date	Oct 13, 2015
Grant date	Oct 13, 2015

Abstract

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.

First claim

What is claimed is:

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…

Assignees

• Toshiba Kk

Inventors

• Kudo Kiwamu
• Nagasawa Tazumi
• Suto Hirofumi
• Yang Tao
• Mizushima Koichi
• Sato Rie

Classifications

• G11B5/314 Primary

  Physics · mapped topic

• G11B2005/0024

  Physics · mapped topic