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US 7,154,715 B2Granted
Magnetoresistive element and magnetic head
AssigneeWestern Digital (Fremont), LLC
InventorsHideaki Yamanaka, Kesami Saito, Koki Takanashi, Hiroyasu Fujimori
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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.
Claims10
A single-sided ferromagnetic tunneling junction magnetoresistive element comprising:
- a substrate;
- a first ferromagnetic layer having a first material composition, the first ferromagnetic layer being disposed adjacent 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 antiferromagnetic layer disposed above the second ferromagnetic layer;
- an insulating layer disposed between the first and second ferromagnetic layers;
- and
- a nonmagnetic metal layer disposed between the insulating layer and the second ferromagnetic layer, the nonmagnetic metal layer adjoining the second ferromagnetic layer.
4 more elements
A single-sided ferromagnetic tunneling junction magnetoresistive element comprising:
- a substrate;
- a first ferromagnetic layer having a first material composition, the first ferromagnetic layer being disposed adjacent 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 antiferromagnetic layer disposed above the second ferromagnetic layer;
- an insulating layer disposed between the first and second ferromagnetic layers;
- and
- a nonmagnetic metal layer disposed between the second ferromagnetic layer and the insulating layer, the nonmagnetic metal layer adjoining the Insulating layer on one side and the second ferromagnetic layer on an opposite side.
4 more elements
Dependencies are inferred from the claim text.