Claims
- 1. A magnetic recording head for use in conjunction with a magnetic recording medium, comprising:
a write pole for applying a magnetic write field to the magnetic recording medium, said write pole comprising a first layer and a second layer, said first layer having a first saturation magnetic moment and said second layer having a second saturation magnetic moment that is greater than said first saturation magnetic moment; and means for heating the magnetic recording medium proximate to where said write pole applies said magnetic write field to the magnetic recording medium.
- 2. The magnetic recording head of claim 1, wherein said means for heating is located adjacent to said second layer of said write pole.
- 3. The magnetic recording head of claim 1, wherein said means for heating is integrally formed with said write pole.
- 4. The magnetic recording head of claim 1, wherein said means for heating includes an optical waveguide.
- 5. The magnetic recording head of claim 1, wherein said means for heating includes an optical antenna.
- 6. The magnetic recording head of claim 1, wherein said write pole is located down track from said means for heating.
- 7. The magnetic recording head of claim 1, wherein said first layer has a thickness in the range of about 1000 Å to about 4000 Å.
- 8. The magnetic recording head of claim 1, wherein said first saturation magnetic moment is less than about 1.0 T.
- 9. The magnetic recording head of claim 1, wherein said second layer has a thickness in the range of about 1000 Å to about 3000 Å.
- 10. The magnetic recording head of claim 1, wherein said second saturation magnetic moment is greater than about 1.8 T.
- 11. The magnetic recording head of claim 1, wherein said means for heating includes a heat emission surface located at an air-bearing surface thereof.
- 12. The magnetic recording head of claim 11, wherein said heat emission surface is spaced apart from the magnetic recording medium a distance of about 5 nm to about 200 nm.
- 13. The magnetic recording head of claim 1, wherein said second layer is the magnetic write field concentrating portion for applying the magnetic write field to the magnetic recording medium.
- 14. A magnetic disc drive storage system, comprising:
a magnetic recording medium; and a magnetic recording head positioned adjacent to said magnetic recording medium, said magnetic recording head comprising:
a write pole for applying a magnetic write field to the magnetic recording medium, said write pole comprising a first layer and a second layer, said first layer having a first saturation magnetic moment and said second layer having a second saturation magnetic moment that is greater than said first saturation magnetic moment; and means for heating the magnetic recording medium proximate to where said write pole applies said magnetic write field to the magnetic recording medium.
- 15. The system of claim 14, wherein said means for heating is located adjacent to said second layer of said write pole.
- 16. The system of claim 14, wherein said means for heating is integrally formed with said write pole.
- 17. The system of claim 14, wherein the magnetic recording head is a perpendicular magnetic recording head.
- 18. The system of claim 14, wherein the magnetic recording medium is a perpendicular magnetic recording medium.
- 19. A method of heat assisted magnetic recording, comprising:
applying heat to a magnetic recording medium; and applying a magnetic write field to the heated portion of the magnetic recording medium using a write pole having a first layer and a second layer, wherein the first layer has a first saturation magnetic moment and the second layer has a second saturation magnetic moment that is greater than the first saturation magnetic moment.
- 20. The method of claim 19, further including positioning the second layer of the write pole adjacent to where the heat is applied to the magnetic recording medium.
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of U.S. Provisional Application No. 60/346,605 filed Jan. 8, 2002.
Provisional Applications (1)
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Number |
Date |
Country |
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60346605 |
Jan 2002 |
US |