Buffered nitrogenated carbon overcoat for data recording disks a

Details Buffered nitrogenated carbon overcoat for data recording disks a Buffered nitrogenated carbon overcoat for data recording disks a

1996-02-28

1999-01-05

Nuzzolillo, M.

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

2041922, 20419215, C23C 1434

Patent

active

058557466

ABSTRACT:
A method for manufacturing a recording medium on a hard disk includes forming a data recording layer on the disk, forming a nitrogenated carbon overcoat layer over the data recording layer, (with or without intervening layers), and the processing data recording layer to protect it from the nitrogen used in the process of forming the nitrogenated carbon. In one approach, the step of processing the data recording layer is accomplished by forming a buffer layer between the data recording layer and the overcoat layer by depositing carbon on the data recording layer using a carbon deposition process excluding nitrogen, then forming the overcoat layer by depositing carbon on the buffer layer using a carbon deposition process that includes a nitrogen source. In an alternative, the step of processing the data recording layer is accomplished with or without a buffer layer in an automated process by transferring the disk after deposition of the data recording layer into an isolation chamber that has no nitrogen, and then into a nitrogenated carbon deposition chamber thereby preventing contamination of the data recording layer deposition process by nitrogen used in the overcoat layer deposition step.

REFERENCES:
patent: 4778582 (1988-10-01), Howard
patent: 5045165 (1991-09-01), Yamashita
patent: 5232570 (1993-08-01), Haines et al.
patent: 5244554 (1993-09-01), Yamagata et al.
patent: 5453168 (1995-09-01), Nelson et al.
patent: 5540957 (1996-07-01), Ueda et al.
patent: 5679431 (1997-10-01), Chen et al.
Kahn et al., "Effects of Nitrogen, Oxygen and Air on the Magnetic Properties of Sputtered CoCrTa Thin Film Recording Discs", IEEE Trans. On Magnetics, vol. 24, No. 6, Nov. 1988 pp. 2985-87.
Dong Li et al., "Infrared Absorption and Nuclear Magnetic Resonance Studies of Carbon Nitride Thin Films Prepared by Reactive Magnetron Sputtering", J. Vac. Sci. Technol. A 12(4), Jul./Aug. 1994, pp. 1470-73.
E.C. Cutiongco et al., "Tribological Behavior of Amorphous Carbon Nitride Overcoats for Magnetic Thin-Film Rigid Disks", 1995.
D. Li et al., "Composition, Structure and Tribological Properties of Amorphous Carbon Nitride Coatins", Surface and Coatings Technology,68/69 (1994) pp. 611-615.
D. Li et al., "Nano-Indentation Studies of Ultrahigh Strength Carbon Nitride Thin Films", J. Appl. Phys. 74 (1), Jul. 1, 1993, pp. 219-223.

Affiliated with

Also associated with

Rating

Buffered nitrogenated carbon overcoat for data recording disks a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Buffered nitrogenated carbon overcoat for data recording disks a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Buffered nitrogenated carbon overcoat for data recording disks a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-858764