Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1997-08-07
1998-12-15
Kiliman, Leszek
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
478 657, 478336, 478611, 478635, 478667, 478678, 478680, 478681, 478694T, 478694TM, 478694TS, 478694TP, 478900, 2041922, 427127, 427128, 427130, 427131, 427132, G11B 566
Patent
active
058493867
ABSTRACT:
An improvement in a magnetic recording medium having an underlayer and a magnetic recording layer is described. The improvement, effective to reduce media anisotropy, includes deposition of a prelayer on the substrate, prior to deposition of the underlayer. The prelayer is deposited to a thickness of between 10-60 .ANG. and is composed of an CoCr-based alloy having a defined saturation magnetization.
REFERENCES:
patent: 5456978 (1995-10-01), Lal
patent: 5569533 (1996-10-01), Lal et al.
patent: 5693426 (1997-12-01), Lee
patent: 5738945 (1998-04-01), Lal
Chen, T. et al., "Isotropic vs. Oriented Thin Film Media: Choice for Future High Density Magnetic Recording," Paper #FA02 from Intermag Conference, Oct. 19-21, 1995, San Antonio, TX.
Johnson, K.E. et al., "In-Plane Anisotropy in Thin-Film Media: Physical Origins of Orientation Ratio (Invited)," Transactions on Magnetics. 31:(06) 2721-2727 (1995).
Lal, B.B. et al., "Effect of Very Thin Cr-Underlayer on the Magnetic and Recording Properties of CoCrTa Thin-Film Media," IEEE Transactions on Magnetics. 30: (06) 3954-3956 (1994).
Mirzamaani, M. et al., "Orientation Ratio of Sputtered Thin-Film Disks," J. Appl. Phys. 67: (67) 4695-4697 (1990).
Ross, C.A. et al., "The Role of Stress-Induced Anisotropy in Longitudinal Thin Film Magnetic Recording Media," J. Appl. Phys. 79: (08) 5342-5344 (1996).
Lal Brij Bihari
Malhotra Sudhir S.
Russak Michael A.
Dehlinger Peter J.
HMT Technology Corporation
Kiliman Leszek
Mohr Judy M.
LandOfFree
Magnetic recording medium having a prelayer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic recording medium having a prelayer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic recording medium having a prelayer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1455704