Ampere wire write head with confined magnetic fields
A magnetic recording head comprises a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a conductor positioned adjacent to an edge of the write pole at the air bearing surface, a first conductive heat sink connected to the conductor, and a second conductive heat sink connected to the conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a structure for augmenting confinement of a magnetic write field adjacent to the write pole. Magnetic storage devices that include the magnetic recording head are also included.
1. A magnetic recording head comprising:
a write pole having a tip adjacent to an air bearing surface of the recording head;
a return pole magnetically coupled to the write pole;
a first conductor positioned adjacent to an edge of the write pole at the air bearing surface;
a first conductive heat sink connected to the first conductor; and
a second conductive heat sink connected to the first conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a magnetic material positioned adjacent to the air bearing surface.
2. The magnetic recording head of claim 1 , wherein the magnetic material is positioned adjacent to opposite sides of the write pole in a cross-track direction.
3. The magnetic recording head of claim 2 , wherein the first conductor extends between the magnetic material and the sides of the write pole.
4. A magnetic recording head comprising:
a write pole having a tip adjacent to an air bearing surface of the recording head;
a return pole magnetically coupled to the write pole;
a first conductor positioned adjacent to an edge of the write pole at the air bearing surface;
a first conductive heat sink connected to the first conductor; and
a second conductive heat sink connected to the first conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes conductive material having a conductivity lower than the conductivity of the first conductor.
5. The magnetic recording head of claim 4 , wherein the first conductor is positioned between the conductive material and sides of the write pole.
6. A magnetic recording head comprising:
a write pole having a tip adjacent to an air bearing surface of the recording head;
a return pole magnetically coupled to the write pole;
a first conductor positioned adjacent to an edge of the write pole at the air bearing surface;
a first conductive heat sink connected to the first conductor; and
a second conductive heat sink connected to the first conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a nonmagnetic conductive portion electrically connected to a magnetic material portion at a position spaced from the air bearing surface.
7. A magnetic recording head comprising:
a write pole having a tip adjacent to an air bearing surface of the recording head;
a return pole magnetically coupled to the write pole;
a first conductor positioned adjacent to an edge of the write pole at the air bearing surface;
a first conductive heat sink connected to the first conductor; and
a second conductive heat sink connected to the first conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a multi-layer portion including layers of magnetic material and layers of conductive material.
8. The magnetic recording head of claim 7 , wherein the layers of magnetic material and the layers of conductive material lie in planes substantially perpendicular to sides of the write pole.
9. The magnetic recording head of claim 1 , wherein the first conductor is positioned adjacent to opposite sides of the write pole and a down-track edge of the write pole.
10. The magnetic recording head of claim 9 , wherein the first conductive heat sink is electrically connected to a first portion of the first conductor lying adjacent to a first side of the write pole and the second conductive heat sink is electrically connected to a second portion of the first conductor lying adjacent to a second side of the write pole.
11. A magnetic recording head comprising:
a write pole having a tip adjacent to an air bearing surface of the recording head;
a return pole magnetically coupled to the write pole;
a first conductor positioned adjacent to an edge of the write pole at the air bearing surface;
a first conductive heat sink connected to the first conductor; and
a second conductive heat sink connected to the first conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a first section having a first electrical conductivity and a second section having a second electrical conductivity, wherein the first conductivity is greater than the second conductivity and wherein the first section is positioned adjacent to the first conductor.
12. The magnetic recording head of claim 11 , wherein the electrical conductivity of the first conductor is greater than the electrical conductivity of the first section of the first and second conductive heat sinks.
13. A magnetic recording head comprising:
a write pole having a tip adjacent to an air bearing surface of the recording head;
a return pole magnetically coupled to the write pole;
a first conductor positioned adjacent to an edge of the write pole at the air bearing surface;
a first conductive heat sink connected to the first conductor; and
a second conductive heat sink connected to the first conductor, wherein the electrical conductivity of the first conductor is greater than the electrical conductivity of the first and second conductive heat sinks.
14. A magnetic recording head comprising:
a write pole having a tip adjacent to an air bearing surface of the recording head;
a return pole magnetically coupled to the write pole;
a first conductor positioned adjacent to an edge of the write pole at the air bearing surface;
a first conductive heat sink connected to the first conductor;
a second conductive heat sink connected to the first conductor; and
a shield positioned between the return pole and the first and second conductive heat sinks adjacent to the air bearing surface.
15. The magnetic recording head of claim 14 , further comprising:
a spacer positioned between the shield and the first portion of the first conductor.
16. A magnetic storage device comprising:
a motor for rotating a storage medium; and
an arm for positioning a recording head adjacent to the storage medium;
wherein the magnetic recording head includes a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a first conductor positioned adjacent to an edge of the write pole at the air bearing surface, a first conductive heat sink connected to the first conductor, and a second conductive heat sink connected to the first conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a magnetic material positioned adjacent to the air bearing surface.
17. The magnetic storage device of claim 16 , wherein the magnetic material is positioned adjacent to opposite sides of the write pole in a cross-track direction.
18. The magnetic storage device of claim 17 , wherein the first conductor extends between the magnetic material and the sides of the write pole.
19. A magnetic storage device comprising:
a motor for rotating a storage medium; and
an arm for positioning a recording head adjacent to the storage medium;
wherein the magnetic recording head includes a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a first conductor positioned adjacent to an edge of the write pole at the air bearing surface, a first conductive heat sink connected to the first conductor, and a second conductive heat sink connected to the first conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a conductive material having a conductivity lower than the conductivity of the first conductor.
20. The magnetic storage device of claim 19 , wherein the first conductor is positioned between the conductive material and sides of the write pole.
21. A magnetic storage device comprising:
a motor for rotating a storage medium; and
an arm for positioning a recording head adjacent to the storage medium;
wherein the magnetic recording head includes a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a first conductor positioned adjacent to an edge of the write pole at the air bearing surface, a first conductive heat sink connected to the first conductor, and a second conductive heat sink connected to the first conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a nonmagnetic conductive portion electrically connected to a magnetic material portion at a position spaced from the air bearing surface.
22. A magnetic storage device comprising:
a motor for rotating a storage medium; and
an arm for positioning a recording head adjacent to the storage medium;
wherein the magnetic recording head includes a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a first conductor positioned adjacent to an edge of the write pole at the air bearing surface, a first conductive heat sink connected to the first conductor, and a second conductive heat sink connected to the first conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a multi-layer portion including layers of magnetic material and layers of conductive material.
23. The magnetic storage device of claim 22 , wherein the layers of magnetic material and the layers of conductive material lie in planes substantially perpendicular to sides of the write pole.
24. The magnetic storage device of claim 16 , wherein the first conductor is positioned adjacent to opposite sides of the write pole and a down-track edge of the write pole.
25. The magnetic storage device of claim 24 , wherein the first conductive heat sink is electrically connected to a first portion of the first conductor lying adjacent to a first side of the write pole and the second conductive heat sink is electrically connected to a second portion of the first conductor lying adjacent to a second side of the write pole.
26. A magnetic storage device comprising:
a motor for rotating a storage medium; and
an arm for positioning a recording head adjacent to the storage medium;
wherein the magnetic recording head includes a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a first conductor positioned adjacent to an edge of the write pole at the air bearing surface, a first conductive heat sink connected to the first conductor, and a second conductive heat sink connected to the first conductor, wherein at least a portion of each of the first and second conductive heat sinks is positioned adjacent to the air bearing surface and wherein each of the first and second conductive heat sinks includes a first section having a first electrical conductivity and a second section having a second electrical conductivity, wherein the first conductivity is greater than the second conductivity and wherein the first section is positioned adjacent to the first conductor.
27. The magnetic storage device of claim 26 , wherein the electrical conductivity of the first conductor is greater than the electrical conductivity of the first section of the first and second conductive heat sinks.
28. A magnetic storage device comprising:
a motor for rotating a storage medium; and
an arm for positioning a recording head adjacent to the storage medium;
wherein the magnetic recording head includes a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a first conductor positioned adjacent to an edge of the write pole at the air bearing surface, a first conductive heat sink connected to the first conductor, and a second conductive heat sink connected to the first conductor, wherein the electrical conductivity of the first conductor is greater than the electrical conductivity of the first and second conductive heat sinks.
29. A magnetic storage device comprising:
a motor for rotating a storage medium; and
an arm for positioning a recording head adjacent to the storage medium;
wherein the magnetic recording head includes a write pole having a tip adjacent to an air bearing surface of the recording head, a return pole magnetically coupled to the write pole, a first conductor positioned adjacent to an edge of the write pole at the air bearing surface, a first conductive heat sink connected to the first conductor, and a second conductive heat sink connected to the first conductor; and
a shield positioned between the return pole and the first and second conductive heat sinks adjacent to the air bearing surface.
30. The magnetic storage device of claim 29 , further comprising:
a spacer positioned between the shield and the first portion of the first conductor.