Claims
- 1. A system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and Oxide; layers on a surface of a substrate, said system being characterized by an X-ray diffraction pattern wherein a (111) peak has a magnitude between substantially absent and less than half the magnitude of the larger of present (001) and (002) peaks; said system being a magnetic media suitable for use in extremely high density recording systems.
- 2. A system as in claim 1 in which the oxide is selected from the group consisting of:
SiO2; and B2O3.
- 3. A system as in claim 1 in which the order of the substrate and at least one FePt and at least one Oxide layers, is selected from the group consisting of:
substrate-FePt and/or Fe/Pt-Oxide; and substrate-Oxide-FePt and/or Fe/Pt.
- 4. A system comprising a plurality of sequentially alternating,
FePt and/or Pt; and Oxide; layers on a surface of a substrate, said system being characterized by an X-ray diffraction pattern wherein a (111) peak has a magnitude between substantially absent and less than half the magnitude of the larger of present (001) and (002) peaks; said system being a magnetic media suitable for use in extremely high density recording systems and the result of the fabrication procedure comprising, in any functional order, the steps of: a. providing a substrate; b. providing a vacuum deposition system comprising sources of FePt and/or Fe & Pt and an oxide; c. placing said substrate into said vacuum deposition system; d. depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of:
FePt and/or Pt-Oxide; and Oxide-FePt and/or Pt; onto said substrate; and e. annealing said substrate onto which has been vacuum deposited a plurality of sequentially alternating layers of: FePt and/or Fe/Pt; and Oxide; at a temperature and time combination sufficient to result in a system characterized by an X-ray diffraction pattern wherein a (111) peak has a magnitude between substantially absent and less than half the magnitude of the larger of present (001) and (002) peaks.
- 5. A system as in claim 4 wherein the step of providing a vacuum deposition system comprising sources of FePt and/or Fe/Pt and an oxide involves providing an oxide selected from the group consisting of:
Sio2; and B2O3.
- 6. A method of fabricating a system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and Oxide; layers on a surface of a substrate, said system being characterized by an X-ray diffraction pattern wherein a (111) peak has a magnitude between substantially absent and less than half the magnitude of the larger of present (001) and (002) peaks; said system being a magnetic media suitable for use in extremely high density recording systems and the result of the fabrication procedure comprising, in any functional order, the steps of: a. providing a substrate; b. providing a vacuum deposition system comprising sources of FePt and/or Fe & Pt and an oxide; c. placing said substrate into said vacuum deposition system; d. depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of:
FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; and e. annealing said substrate onto which has been vacuum deposited a plurality of sequentially alternating layers of:
FePt and/or Fe/Pt; and Oxide; at a temperature and time combination sufficient to result in a system characterized by an X-ray diffraction pattern wherein a (111) peak has a magnitude between substantially absent and less than half the magnitude of the larger of present (001) and (002) peaks.
- 7. A method of fabricating a system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and Oxide; layers on a surface of a substrate as in claim 6; wherein the step of depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of: FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; involves depositing FePt and/or Fe/Pt layer(s) of less than about forty (40) nm deep.
- 8. A method of fabricating a system as in claim 6 wherein the step of depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of:
FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate, involves depositing an oxide selected from the group consisting of: Sio2; and B2O3.
- 9. A method of fabricating a system as in claim 6 wherein the step of providing a substrate involves providing a substrate which provides no essential lattice matching to crystallinity of the resulting system which is characterized by an X-ray diffraction pattern wherein a (111) peak has a magnitude between substantially absent and less than half the magnitude of the larger of present (001) and (002) peaks.
- 10. A method of fabricating a system as in claim 9 wherein applies at least one selection from the group consisting of:
the step of providing a substrate involves providing a substrate made of 7059 glass; and annealing is carried out at between 450 and 600 degrees centigrade.
- 11. A method of fabricating a system as in claim 6 wherein the steps of:
placing said substrate into said vacuum deposition system; and depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of:
FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; involve providing a vacuum deposition system within which is caused to be a base pressure of about 10−7 Torr therewithin prior to entry of argon to a pressure of about 5 m-Torr and sputter deposition of said alternating layers of FePt and Fe/Pt and Oxide.
- 12. A method of fabricating a system as in claim 11 wherein the steps of:
placing said substrate into said vacuum deposition system; and depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of:
FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; involves depositing an oxide selected from the group consisting of: SiO2; and B2O3.
- 13. A method of fabricating a system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and Oxide; wherein said oxide is selected from the group consisting of: SiO2; and B2O3; layers on a surface of a substrate, said system being a magnetic media suitable for use in extremely high density recording systems and the result of the fabrication procedure comprising, in any functional order, the steps of: a. providing a substrate; b. providing a vacuum deposition system comprising sources of FePt and/or Fe & Pt and oxide selected from the group consisting of:
SiO2; and B2O3; c. placing said substrate into said vacuum deposition system and causing a base pressure of about 10−7 Torr therewithin prior to entry of argon to a pressure of about 5 m-Torr; sputter deposition of said alternating layers of FePt and Oxide; d. sputter depositing said alternating layers of FePt and Oxide to form a plurality of sequentially alternating layers, in an order selected from the group consisting of:
FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; and e. annealing said substrate onto which has been vacuum deposited a plurality of sequentially alternating layers of:
FePt and/or Fe/Pt; and Oxide; at a temperature and time combination sufficient to result in a system characterized by an X-ray diffraction pattern wherein a (111) peak has a magnitude between substantially absent and less than half the magnitude of the larger of present (001) and (002) peaks.
- 14. A method of fabricating a system as in claim 13 wherein applies at least one selection from the group consisting of:
the step of providing a substrate involves providing a substrate made of 7059 glass; and the step of annealing is carried out at between 450 and 600 degrees centigrade.
- 15. A system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and B2O3; layers on a surface of a substrate wherein said FePt layer(s) are at less than about forty Angstroms thick, said system being characterized by an X-ray diffraction pattern wherein a (111) peak has a magnitude between substantially absent and less than half the magnitude of the larger of present (001) and (002) peaks, said system being a magnetic media suitable for use in extremely high density recording systems.
- 16. A system as in claim 15, in which the B2O3 layer is between eight (8) and twelve (12) Angstroms thick and the system presents with a coherence of between ten thousand (10,000) and twelve thousand (12,000) Oersteds.
- 17. A system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and Oxide; layers on a surface of a substrate, said system being characterized by an X-ray diffraction pattern including significant (110) and (22) peaks and essentially negligible (111), (001) and (002) peaks, which are less than half the larger of the (110) and (220) peaks; said system being a magnetic media suitable for use in extremely high density recording systems.
- 18. A system as in claim 17 in which the oxide is selected from the group consisting of:
SiO2; and B2O3.
- 19. A system as in claim 17 in which the order of the substrate and at least one FePt and at least one Oxide layers, is selected from the group consisting of:
substrate-FePt and/or Fe/Pt-Oxide; and substrate-Oxide-FePt and/or Fe/Pt.
- 20. A system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and Oxide; layers on a surface of a substrate, said system being characterized by an X-ray diffraction pattern including significant (110) and (22) peaks and essentially negligible (111), (001) and (002) peaks which are less than half the larger of the (110) and (220) peaks; said system being a magnetic media suitable for use in extremely high density recording systems and the result of the fabrication procedure comprising, in any functional order, the steps of: a. providing a substrate; b. providing a vacuum deposition system comprising sources of FePt and/or Fe & Pt and an oxide; c. placing said substrate into said vacuum deposition system; d. depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of:
FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; and e. annealing said substrate onto which has been vacuum deposited a plurality of sequentially alternating layers of:
FePt and/or Fe/Pt; and Oxide; at a temperature and time combination sufficient to result in a system characterized by an X-ray diffraction pattern including (110) and (220) peaks and essentially negligible (111), (001) and (002) peaks, which are less than half the larger of the (110) and (220) peaks, after the anneal procedure.
- 21. A system as in claim 20 wherein the step of providing a vacuum deposition system comprising sources of FePt and an oxide involves providing an oxide selected from the group consisting of:
sio2; and B2O3.
- 22. A method of fabricating a system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and Oxide; layers on a surface of a substrate, said system being characterized by an X-ray diffraction pattern including significant (110) and (220) peaks, and essentially negligible (111), (001) and (002) peaks which are less than half the larger of the (110) and (220) peaks; said system being a magnetic media suitable for use in extremely high density recording systems and the result of the fabrication procedure comprising, in any functional order, the steps of: a. providing a substrate; b. providing a vacuum deposition system comprising sources of FePt and/or Fe & Pt and an oxide; c. placing said substrate into said vacuum deposition system; d. depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of:
FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; and e. annealing said substrate onto which has been vacuum deposited a plurality of sequentially alternating layers of:
FePt and/or Fe/Pt; and Oxide; at a temperature and time combination sufficient to result in a system characterized by an X-ray diffraction pattern including (110) and (220) peaks and essentially negligible (111), (001) and (002) peaks, which are less than half the larger of the (110) and (220) peaks, after the anneal procedure.
- 23. A method of fabricating a system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and Oxide; layers on a surface of a substrate as in claim 22, wherein the step of depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of: FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; involves depositing FePt layer(s) of less than about forty (40) nm deep.
- 24. A method of fabricating a system as in claim 22 wherein the step of depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of:
FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate, involves depositing an oxide selected from the group consisting of: Sio2; and B2O3.
- 25. A method of fabricating a system as in claim 22 wherein the step of providing a substrate involves providing a substrate which provides no essential lattice matching to crystallinity of the resulting system which is characterized by an X-ray diffraction pattern including (110) and (220) peaks and essentially insignificant (111), (001) and (002) peaks, which are less than half the larger of the (110) and (220) peaks after the anneal procedure.
- 26. A method of fabricating a system as in claim 25 wherein applies at least one selection from the group consisting of:
the step of providing a substrate involves providing a substrate made of 7059 glass; and the step of annealing is carried out at between 450 and 600 degrees centigrade.
- 27. A method of fabricating a system as in claim 22 wherein the steps of:
placing said substrate into said vacuum deposition system; and depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of: FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; involve providing a vacuum deposition system within which is caused to be a base pressure of about 10−7 Torr therewithin prior to entry of argon to a pressure of about 5 m-Torr and sputter deposition of said alternating layers of FePt and Oxide.
- 28. A method of fabricating a system as in claim 27 wherein the steps of:
placing said substrate into said vacuum deposition system; and depositing a plurality of sequentially alternating layers, in an order selected from the group consisting of: FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; involves depositing an oxide selected from the group consisting of: SiO2; and B2O3.
- 29. A method of fabricating a system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and Oxide; wherein said oxide is selected from the group consisting of: Sio2; and B2O3; layers on a surface of a substrate, said system being a magnetic media suitable for use in extremely high density recording systems and the result of the fabrication procedure comprising, in any functional order, the steps of: a. providing a substrate; b. providing a vacuum deposition system comprising sources of FePt and/or Fe & Pt selected from the group consisting of:
SiO2; and B2O3; c. placing said substrate into said vacuum deposition system and causing a base pressure of about 10−7 Torr therewithin prior to entry of argon to a pressure of about 5 m-Torr; sputter deposition of said alternating layers of FePt and/or Fe/Pt and Oxide; d. sputter depositing said alternating layers of FePt and Oxide to form a plurality of sequentially alternating layers, in an order selected from the group consisting of:
FePt and/or Fe/Pt-Oxide; and Oxide-FePt and/or Fe/Pt; onto said substrate; and e. annealing said substrate onto which has been vacuum deposited a plurality of sequentially alternating layers of:
FePt and/or Fe/Pt; and Oxide; at a temperature and time combination sufficient to result in a system characterized by an X-ray diffraction pattern including (110) and (220) peaks and essentially insignificant (111), (001) and (002) peaks, which are less than half the larger of the (110) and (220) peaks after the anneal procedure.
- 30. A method of fabricating a system as in claim 29 wherein the applies at least one selection from the group consisting of:
the step of providing a substrate involves providing a substrate made of 7059 glass; and the step of annealing is carried out at between 450 and 600 degrees centigrade.
- 31. A system comprising a plurality of sequentially alternating,
FePt and/or Fe/Pt; and B2O3; layers on a surface of a substrate wherein said FePt layer(s) are greater than about forty Angstroms thick, said system being characterized by an X-ray diffraction pattern including (110), (220) peaks and essentially insignificant (111), (001) and (002) peaks, which are less than half the larger of the (110) and (220) peaks after the anneal procedure.
- 32. A system as in claim 31, in which the B2O3 layer is between eight (8) and twelve (12) Angstroms thick and the system presents with a coherence of between six (6) thousand (6,000) and twelve thousand (12,000) Oersteds.
Parent Case Info
[0001] This Application is a CIP of Provisional application Ser. No. 60/190,482 filed Mar. 18, 2000;
Provisional Applications (1)
|
Number |
Date |
Country |
|
60190482 |
Mar 2000 |
US |