Magnetic oscillator
AssigneeKabushiki Kaisha Toshiba
InventorsTazumi NAGASAWA, Kiwamu KUDO, Rie SATO, Koichi MIZUSHIMA
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Abstract
According to one embodiment, a magnetic oscillator includes a layered film and a pair of electrodes. The layered film includes a first ferromagnetic layer, an insulating layer stacked on the first ferromagnetic layer, and a second ferromagnetic layer stacked on the insulating layer. The pair of electrodes is configured to apply a current to the layered film in a direction perpendicular to a film surface of the layered film. Regions having different resistance area products are provided between the first ferromagnetic layer and the second ferromagnetic layer.
Claims16
A magnetic oscillator comprising:
- a layered film comprising a first ferromagnetic layer, an insulating layer stacked on the first ferromagnetic layer, and a second ferromagnetic layer stacked on the insulating layer;
- a pair of electrodes configured to apply a current to the layered film in a direction penetrating a film surface of the layered film;
- and
- a metal path which electrically connects the first ferromagnetic layer and the second ferromagnetic layer,
- wherein regions having different resistance area products are provided in a plane between the first ferromagnetic layer and the second ferromagnetic layer.
A magnetic recording and reproducing apparatus comprising:
- a magnetic oscillator comprising:
- a layered film comprising a first ferromagnetic layer, an insulating layer stacked on the first ferromagnetic layer, and a second ferromagnetic layer stacked on the insulating layer;
- a pair of electrodes configured to apply a current to the layered film in a direction penetrating a film surface of the layered film;
- and a metal path which electrically connects the first ferromagnetic layer and the second ferromagnetic layer,
- wherein regions having different resistance area products are provided in a plane between the first ferromagnetic layer and the second ferromagnetic layer.
Dependencies are inferred from the claim text.