Stacked structure, magnetoresistive effect element, magnetic head, sensor, high frequency filter, and oscillator
AssigneeTDK Corporation
InventorsKazuumi Inubushi, Katsuyuki Nakada
Life of this patent
Estimating the term…
Abstract
A stacked structure is positioned on a nonmagnetic metal layer. The stacked structure includes a ferromagnetic layer and an intermediate layer interposed between the nonmagnetic metal layer and the ferromagnetic layer. The intermediate layer includes a NiAlX alloy layer represented by Formula (1): Niγ1Alγ2Xγ3 . . . (1), [X indicates one or more elements selected from the group consisting of Si, Sc, Ti, Cr, Mn, Fe, Co, Cu, Zr, Nb, and Ta, and satisfies an expression of 0<γ<0.5 in a case of γ=γ3/(γ1+γ2+γ3)].
Claims24
A stacked structure which is positioned on a nonmagnetic metal layer, the structure comprising:
- a ferromagnetic layer;
- and
- an intermediate layer interposed between the nonmagnetic metal layer and the ferromagnetic layer,
- wherein the intermediate layer includes a NiAlX alloy layer represented by Formula (1),
- Niγ1Alγ2Xγ3 (1);
- wherein X indicates one or more elements selected from the group consisting of Si, Sc, Ti, Cr, Mn, Fe, Co, Cu, Zr, Nb, and Ta, and satisfies an expression of 0<γ<0.5 in a case of γ=γ3/(γ1+γ2+γ3);
- and
- wherein a value of γ3 changes along an in-plane direction or a thickness direction.
A stacked structure which is positioned on a nonmagnetic metal layer, the structure comprising:
- a ferromagnetic layer;
- and
- an intermediate layer interposed between the nonmagnetic metal layer and the ferromagnetic layer,
- wherein the intermediate layer includes NiAlX alloy layer representated by Formula (1):
- Niγ1Alγ2Xγ3 (1);
- wherein X indicates one or more elements selected from the group consisting of Si, Sc, Ti, Cr, Mn, Fe, Co, Cu, Zr, Nb, and Ta, and satisfies an expression of 0<γ<0.5 in a case of γ=γ3/(γ1+γ2+γ3);
- and
- wherein a value of γ3 decreases as becoming farther from the ferromagnetic layer in a thickness direction thereof.
Dependencies are inferred from the claim text.