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US 6,597,548 B1Granted
Magnetoresistive element and magnetic head
AssigneeRead-Rite SMI Corporation
InventorsHideaki Yamanaka, Kesami Saito, Koki Takanashi, Hiroyasu Fujimori
Life of this patent
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Abstract
A magnetic transducing element in which a ferromagnetic tunneling junction film, including first and second ferromagnetic layers and an insulating layer are enclosed between the ferromagnetic layers, and a nonmagnetic metal thin film is inserted between the second ferromagnetic layer and the insulating layer, is formed on a substrate.
Claims8
A magnetoresistive element having a ferromagnetic tunneling junction film comprising:
- a first ferromagnetic layer formed on a substrate;
- a second ferromagnetic layer;
- an insulating layer disposed between the first and second ferromagnetic layers;
- and
- a nonmagnetic metal thin film disposed between, and adjoining, one of the first or second ferromagnetic layers and the insulating layer, the nonmagnetic metal thin film having a thickness in a range of 2 to 20 angstroms.
2 more elements
A magnetic head comprising:
- a magnetoresistive element having a ferromagnetic tunneling junction film including:
- a first ferromagnetic layer formed on a substrate;
- a second ferromagnetic layer;
- an insulating layer between the first and second ferromagnetic layers;
- and
- a nonmagnetic metal thin film disposed between, and adjoining, one of the first or second ferromagnetic layers and the insulating layer, the nonmagnetic metal thin film having a thickness in a range of 2 to 20 angstroms.
3 more elements
A ferromagnetic tunneling junction magnetoresistive element comprising:
- a substrate;
- a first ferromagnetic layer having a first material composition, the first ferromagnetic layer being disposed on the substrate;
- a second ferromagnetic layer having a second material composition different from the first material composition, the second ferromagnetic layer being disposed above the first ferromagnetic layer;
- an insulating layer disposed between the first and second ferromagnetic layers;
- and
- a nonmagnetic metal layer disposed between the first and second ferromagnetic layers, the nonmagnetic metal layer adjoining the insulating layer and being disposed between the insulating layer and the second ferromagnetic layer.
3 more elements
Dependencies are inferred from the claim text.