Claims
- 1. A perpendicular recording head for use with magnetic storage media, said perpendicular recording head, comprising:
a main pole; and means for concentrating magnetic flux from said main pole onto a small surface area of a magnetic recording medium.
- 2. A perpendicular recording head for use with magnetic storage media, said perpendicular recording head comprising:
a main pole having a tip, said main pole including:
a first layer of material having a saturation magnetic moment; a second layer of material having a lower saturation magnetic moment lower than said saturation magnetic moment of said first layer; said second layer of material tapering towards said tip.
- 3. The perpendicular recording head according to claim 2, wherein:
said perpendicular recording head further comprises a flux return pole and a yoke, said yoke forming a magnetic coupling between said flux return pole and said main pole; and said main pole's first layer is adjacent to said yoke.
- 4. The perpendicular recording head according to claim 2, wherein said first layer defines a leading edge of said main pole.
- 5. A perpendicular recording head according to claim 2, wherein said second layer comprises alloys of CoZrNb, CoZrTa, NiFe, or combinations thereof.
- 6. A perpendicular recording head according to claim 2, wherein said second layer has a saturation magnetic field not exceeding approximately 16 kG.
- 7. A perpendicular recording head according to claim 2, wherein said first layer comprises alloys of FeAlN, FeTaN, CoFe, CoFeNi, or combinations thereof.
- 8. A perpendicular recording head according to claim 2, wherein said first layer has a saturation magnetic field of at least approximately 16 kG.
- 9. A perpendicular recording head according to claim 8, wherein said first layer has a saturation magnetic field of at least approximately 20 kG.
- 10. A perpendicular recording head according to claim 2, wherein said main pole has a width less than approximately 0.10 m.
- 11. A perpendicular recording head according to claim 2, wherein said main pole has a thickness ranging from approximately 20 A to approximately 5 μm.
- 12. A perpendicular recording head according to claim 11, wherein said main pole has a thickness ranging from approximately 1,000 A to approximately 2,000 A.
- 13. A method of making a perpendicular recording head, comprising the steps of:
providing a substrate upon which a read element, flux return pole, and yoke; depositing photoresist, thereby defining a channel within said photoresist, said channel being dimensioned and configured to define a shape of a main pole; depositing a first layer of material within said channel; and depositing a second layer of material within said channel.
- 14. The method according to claim 13, wherein said steps of depositing a first layer and depositing a second layer further comprise the steps of depositing a material having a first saturation magnetic moment to form said first layer, and depositing a material having a second saturation magnetic moment to form said second layer, one of said saturation magnetic moments being low relative to the other of said saturation magnetic moments.
- 15. The method according to claim 14, further comprising the step of forming a taper within said material having a low saturation magnetic moment at a tip of said main pole.
- 16. The method according to claim 15, wherein said step of forming a taper within said material having a low saturation magnetic moment at a tip of said main pole comprises the steps of:
depositing a bi-layer photoresist on said first layer at said tip, said by-layer photoresist having a lower layer and an upper layer, said upper layer extending beyond said lower layer; and depositing said second layer.
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of U.S. Provisional Patent Application No. 60/189,359, filed Mar. 15, 2000.
Provisional Applications (1)
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Number |
Date |
Country |
|
60189359 |
Mar 2000 |
US |
Divisions (1)
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Number |
Date |
Country |
Parent |
09809118 |
Mar 2001 |
US |
Child |
10674657 |
Sep 2003 |
US |