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US 12,598,918 B2Granted
Magneto-resistive element and method of manufacturing the magneto-resistive element
AssigneeTDK Corporation
InventorsTomoyuki Sasaki, Zhenyao Tang
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Abstract
A magneto-resistive element includes a first ferromagnetic layer, a second ferromagnetic layer, and a non-magnetic layer. The non-magnetic layer is located between the first ferromagnetic layer and the second ferromagnetic layer. The non-magnetic layer includes a first central region, and a first outer circumferential region disposed on an outer side of the first central region. A maximum thickness of the first outer circumferential region is greater than an average thickness of the first central region.
Claims19
A magneto-resistive element comprising:
- a first ferromagnetic layer, a second ferromagnetic layer, and a non-magnetic layer,
- wherein the non-magnetic layer is located between the first ferromagnetic layer and the second ferromagnetic layer,
- the non-magnetic layer includes a first central region, and a first outer circumferential region disposed on an outer side of the first central region;
- and
- a maximum thickness of the first outer circumferential region is greater than an average thickness of the first central region,
- the first outer circumferential region contains nitrogen,
- the first outer circumferential region has a first portion and a second portion that is located farther from the first central region than the first portion, and
- the nitrogen concentration in the first portion is lower than the nitrogen concentration in the second portion, and the nitrogen concentration gradually decreases from the second portion to the first portion.
5 more elements
A magneto-resistive element comprising:
- a first ferromagnetic layer, a second ferromagnetic layer, a non-magnetic layer and a magnetic induction layer,
- wherein the non-magnetic layer is located between the first ferromagnetic layer and the second ferromagnetic layer,
- the non-magnetic layer includes a first central region, and a first outer circumferential region disposed on an outer side of the first central region;
- and
- a maximum thickness of the first outer circumferential region is greater than an average thickness of the first central region,
- the magnetic induction layer and the non-magnetic layer sandwich the second ferromagnetic layer,
- the magnetic induction layer includes a second central region, and a second outer circumferential region disposed on an outer side of the second central region,
- a maximum thickness of the second outer circumferential region is greater than an average thickness of the second central region, and
- the second outer circumferential region contains nitrogen.
6 more elements
Dependencies are inferred from the claim text.