Laminated write gap to improve writer performance
View Patent ↗Embodiments of the present invention recite a write gap structure for a magnetic recording head. In one embodiment, the write gap structure comprises at least one layer of inert material is disposed proximate to the P 2 pole of a magnetic recording head. A layer of magnetic material is disposed between the layer of inert material and the P 1 pedestal (P 1 P) of the magnetic recording head. In embodiments of the present invention, the write gap structure further comprises a second layer of inert material is disposed between the layer of magnetic material and the P 1 P of the magnetic recording head. In embodiments of the present invention, the write gap structure only overlies a portion of the write gap of the magnetic recording head with reference to the throat height dimension of the write gap.
1. A write gap structure for a magnetic recording head, said write gap structure comprising:
at least one laminate layer of inert material disposed proximate to pole structure of said magnetic recording head;
a layer of magnetic material disposed between said at least one layer of inert material and a pedestal of said magnetic recording head; and
another layer of inert material disposed between said layer of magnetic material and said pedestal of said magnetic recording head wherein said layer of magnetic material comprises a layer of cobalt iron (CoFe) and wherein said at least one laminate layer of inert material comprises a laminate layer of rhodium (Rh) and a laminate layer of tantalum (Ta).
2. The write gap structure of claim 1 wherein said another layer of inert material comprises a layer of rhodium (Rh).
3. The write gap structure of claim 2 wherein said at least one laminate layer of inert material comprises approximately sixty percent (60%) of said write gap structure, said layer of magnetic material comprises approximately thirty percent (30%) of said write gap structure, and said second layer of inert material comprises approximately ten percent (10%) of said write gap structure.
4. The write gap structure of claim 1 having a throat height that is less than the write gap of said magnetic recording head.
5. The write gap structure of claim 1 wherein said layer of magnetic material reduces the generation of magnetic fields in erase bands of a magnetic recording medium proximate to said magnetic recording head when in operation.
6. A magnetic recording head comprising:
a pole structure;
a pedestal structure;
a laminated write gap structure disposed between said pole structure and said pedestal structure, and wherein said laminated write gap structure comprises at least one magnetic layer;
a first inert layer disposed between said at least one magnetic layer and said pole structure; and
a second inert layer disposed between said at least one magnetic layer and said pedestal structure wherein said second inert layer comprises a layer of rhodium (Rh).
7. The magnetic recording head of claim 6 wherein said first inert layer comprises a laminate of rhodium (Rh) and tantalum (Ta).
8. The magnetic recording head of claim 6 wherein said at least one magnetic layer comprises a layer of cobalt iron (CoFe).
9. The magnetic recording head of claim 6 wherein a throat height of said write gap structure is less than the throat height of said magnetic recording head.
10. A magnetic recording head comprising:
a pole structure;
a pedestal structure;
a laminated write gap structure disposed between said pole structure and said pedestal structure, said laminated write gap structure comprising at least one magnetic layer disposed proximate to said pedestal structure and wherein a throat height of said laminated write gap structure is less than a throat height of said pedestal structure; and
a second inert layer disposed between said at least one magnetic layer and said pedestal structure wherein said laminated write gap structure further comprises an inert layer disposed between said at least one magnetic layer and said pole structure wherein said inert layer comprises a laminate of rhodium (Rh) and tantalum (Ta).
11. The magnetic recording head of claim 10 wherein said at least one magnetic layer comprises cobalt iron (CoFe).