Inductive write head driven only by an ampere wire
View Patent ↗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 at least one edge of the write pole at the air bearing surface for carrying current to produce a magnetic field that saturates at least a portion of the write pole and augments a write field, a first conductive heat sink connected to a first end of the conductor, and a second conductive heat sink connected to a second end of the conductor. Disc drives that include the 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 conductor positioned adjacent to at least one edge of the write pole at the air bearing surface for carrying current to produce a magnetic field that saturates at least a portion of the write pole and augments a write field;
a first conductive heat sink connected to a first end of the conductor; and
a second conductive heat sink connected to a second end of the conductor.
2. The magnetic recording head of claim 1 , wherein the conductor is positioned between the write pole and the return pole along the air bearing surface.
3. The magnetic recording head of claim 2 , wherein the conductor has a width less than a distance between the write pole and the return pole at the air bearing surface.
4. The magnetic recording head of claim 2 , wherein the conductor has a width substantially the same as a distance between the write pole and the return pole at the air bearing surface.
5. The magnetic recording head of claim 1 , wherein the conductor is positioned adjacent to a side of the write pole opposite the return pole along the air bearing surface.
6. The magnetic recording head of claim 1 , wherein the conductor is connected to the first and second conductive heat sinks adjacent to a corner of each of the first and second conductive heat sinks.
7. The magnetic recording head of claim 1 , wherein the conductor has a rectangular cross-section having a width along the air bearing surface greater than a thickness substantially perpendicular to the air bearing surface.
8. A disc drive 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 conductor positioned adjacent to an edge of the write pole at the air bearing surface for carrying current to produce a magnetic field that saturates at least a portion of the write pole and augments a write field, a first conductive heat sink connected to a first end of the conductor, and a second conductive heat sink connected to a second end of the conductor.
9. The disc drive of claim 8 , wherein the conductor is positioned between the write pole and the return pole along the air bearing surface.
10. The disc drive of claim 9 , wherein the conductor has a width less than a distance between the write pole and the return pole at the air bearing surface.
11. The disc drive of claim 9 , wherein the conductor has a width substantially the same as a distance between the write pole and the return pole at the air bearing surface.
12. The disc drive of claim 8 , wherein the conductor is positioned adjacent to a side of the write pole opposite the return pole along the air bearing surface.
13. The disc drive of claim 8 , wherein the conductor is connected to the first and second conductive heat sinks adjacent to a corner of each of the first and second conductive heat sinks.
14. The disc drive of claim 8 , wherein the conductor has a rectangular cross-section having a width along the air bearing surface greater than a thickness substantially perpendicular to the air bearing surface.
15. 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 conductor positioned adjacent to at least one edge of the write pole at the air bearing surface;
a first conductive heat sink connected to a first end of the conductor; and
a second conductive heat sink connected to a second end of the conductor;
wherein current in the conductor and the first and second conductive heat sinks produces a magnetic field that saturates at least a portion of the write pole and augments a write field.
16. The magnetic recording head of claim 15 , wherein the conductor is positioned between the write pole and the return pole along the air bearing surface.
17. The magnetic recording head of claim 16 , wherein the conductor has a width less than a distance between the write pole and the return pole at the air bearing surface.
18. The magnetic recording head of claim 16 , wherein the conductor has a width substantially the same as a distance between the write pole and the return pole at the air bearing surface.
19. The magnetic recording head of claim 15 , wherein the conductor is positioned adjacent to a side of the write pole opposite the return pole along the air bearing surface.
20. The magnetic recording head of claim 15 , wherein the conductor is connected to the first and second conductive heat sinks adjacent to a corner of each of the first and second conductive heat sinks.
21. The magnetic recording head of claim 15 , wherein the conductor has a rectangular cross-section having a width along the air bearing surface greater than a thickness substantially perpendicular to the air bearing surface.