US 6,982,845 B2 | ||
Magnetic recording apparatus and magnetic recording method | ||
Tadashi Kai, Kanagawa-ken (Japan); Masayuki Takagishi, Kanagawa-ken (Japan); Masashi Sahashi, Kanagawa-ken (Japan); Junichi Akiyama, Kanagawa-ken (Japan); Hitoshi Iwasaki, Kanagawa-ken (Japan); and Akira Kikitsu, Kanagawa-ken (Japan) | ||
Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
Filed on Mar. 28, 2003, as Appl. No. 10/400,532. | ||
Claims priority of application No. 2002-097446 (JP), filed on Mar. 29, 2002. | ||
Prior Publication US 2003/0214742 A1, Nov. 20, 2003 | ||
Int. Cl. G11B 5/02 (2006.01) |
U.S. Cl. 360—59 | 19 Claims |
1. A magnetic recording apparatus, comprising:
a magnetic field impression unit that impresses a magnetic field to a magnetic recording medium;
a current supplying unit that supplies a current to the magnetic recording medium; and
a controlling unit that makes the current supplying unit supply the current to the magnetic recording medium while making
the magnetic field impression unit impress the magnetic field to at least a unit of a magnetic recording unit of the magnetic
recording medium, to thereby record information magnetically by making a direction of a magnetization of the magnetic recording
unit of the magnetic recording medium in a predetermined direction,
wherein
the magnetic recording medium includes a first magnetic layer, and a second magnetic layer as the magnetic recording unit,
the magnetic field impression unit directs a magnetization of the first magnetic layer by impressing the magnetic field to
the first magnetic layer, and
the current supplying unit directs a magnetization of the second magnetic layer in a direction corresponding to a direction
of the magnetization of the first magnetic layer by supplying a spin-polarized current to the second magnetic layer through
the first magnetic layer.
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