Systems and methods for providing hybrid coils for magnetic write heads
View Patent ↗Systems and methods for providing hybrid coils for magnetic write heads used in disk drives are described. One such system includes a magnetic read/write head including a read transducer, and a write transducer including a pair of write poles, a hybrid coil including a first coil having a pancake coil configuration including at least one turn positioned between the pair of write poles, and a second coil having a helical coil configuration including a plurality of turns positioned between the pair of write poles, the second coil coupled to the first coil, where the at least one turn of the first coil is interleaved with the turns of the second coil.
1. A magnetic read/write head for a storage system, the read/write head comprising:
a read transducer; and
a write transducer comprising:
a pair of write poles;
a hybrid coil comprising:
a first coil having a pancake coil configuration comprising at least one turn positioned between the pair of write poles; and
a second coil having a helical coil configuration comprising a plurality of turns positioned between the pair of write poles, the second coil coupled to the first coil,
wherein the at least one turn of the first coil is interleaved with the turns of the second coil.
2. The read/write head of claim 1 , wherein the first coil consists of two turns and the second coil consists of three turns.
3. The read/write head of claim 1 , wherein the first coil comprises an interleaved section and a non-interleaved section, wherein a width of the at least one turn of the first coil in the interleaved section is less than a width of the at least one turn of the first coil in the non-interleaved section.
4. The read/write head of claim 1 , wherein the second coil comprises an interleaved section and a non-interleaved section, wherein a width of the turns of the second coil in the interleaved section is less than a width of the turns of the second coil in the non-interleaved section.
5. The read/write head of claim 1 :
wherein the first coil is positioned on a first layer,
wherein a first portion of the second coil is interleaved with the first coil on the first layer, and
wherein a second portion of the second coil is positioned on a second layer, the second layer on the first layer.
6. The read/write head of claim 5 , wherein a plurality of coil vias couple the first portion and the second portion.
7. The read/write head of claim 5 , wherein a jumper and a plurality of coil vias couple the first coil and the second coil.
8. The read/write head of claim 5 :
wherein a plurality of coil vias couple the first section and the second section,
wherein the first coil and second coil are coupled on the first layer.
9. The read/write head of claim 5 , wherein the hybrid coil comprises a first terminal on the second layer and a second terminal on the second layer.
10. The read/write head of claim 5 , wherein the hybrid coil comprises a first terminal on the first layer and a second terminal on the second layer.
11. The read/write head of claim 1 , wherein at least one turn of the second coil is wrapped around a top yoke of the write transducer.