Apparatus for increasing data rates in a magnetic head
View Patent ↗In accordance with certain embodiments, a magnetic head has a coil, which has a lead coil turn positioned between a yoke and an air-bearing surface. In certain embodiments, a magnetic head has a coil, which has a lead coil turn minimally spaced from a main write pole.
1. A magnetic head comprising:
a coil having a lead coil turn positioned at an air-bearing surface.
2. The magnetic head of claim 1 , wherein the lead coil turn is positioned adjacent to a main write pole.
3. The magnetic head of claim 2 , wherein the lead coil turn is encapsulated.
4. The magnetic head of claim 2 , further comprising:
a plurality of coils helically wrapped around a yoke magnetically coupled to the main write pole.
5. The magnetic head of claim 2 , further comprising:
a plurality of coils wrapped around a yoke in a single pancake design, the yoke being magnetically coupled to the main write pole.
6. The magnetic head of claim 2 , further comprising:
a plurality of coils wrapped around a yoke in a double pancake design, the yoke being magnetically coupled to the main write pole.
7. The magnetic head of claim 1 , further comprising:
a near field transducer; and
waveguide core surrounded by a waveguide cladding.
8. The magnetic head of claim 7 , wherein the near field transducer contacts the main write pole.
9. The magnetic head of claim 1 , wherein the lead coil turn is minimally spaced from a main write pole.
10. The magnetic head of claim 9 , wherein the main write pole is sloped.
11. A magnetic head comprising:
a coil having a lead coil turn positioned closer to an air-bearing surface than any portion of a yoke.
12. The magnetic head of claim 11 , wherein the lead coil turn is positioned adjacent a main write pole.
13. The magnetic head of claim 12 , further comprising:
a near field transducer; and
waveguide core surrounded by a waveguide cladding.
14. The magnetic head of claim 13 , wherein the lead coil turn is positioned at an air bearing surface.
15. The magnetic head of claim 13 , wherein the near field transducer contacts the main write pole.
16. The magnetic head of claim 13 , further comprising:
a plurality of coils helically wrapped around the yoke.
17. The magnetic head of claim 13 , further comprising:
a plurality of coils wrapped around a yoke in a single pancake design.
18. The magnetic head of claim 13 , wherein the lead coil turn is encapsulated.
19. A magnetic head having an air-bearing surface, the magnetic head comprising:
a yoke, back pedestal return pole, and write pole coupled together; and
a coil having a lead coil turn positioned closer to the air-bearing surface than any portion of the yoke.
20. The magnetic head of claim 19 , wherein the lead coil turn is positioned adjacent to a main write pole.