Title :
Magnetic properties and noise characteristics of high coercivity CoCrPtB/Cr media
Author :
Paik, C.R. ; Suzuki, I. ; Tani, N. ; Ishikawa, M. ; Ota, Y. ; Nakamura, K.
Author_Institution :
ULVAC Japan Ltd., Chiba, Japan
fDate :
9/1/1992 12:00:00 AM
Abstract :
The magnetic properties of CoCrPtB/Cr media were investigated to find the optimum compositions with high coercivity. It is found that the maximum coercivity of CoCrPtB/Cr media can be achieved by adding the same amount of Pt and B content while keeping Cr content fixed at 10 at.%. A very high coercivity of 3200 Oe was obtained in a Co-10 at.%Cr-10 at.%Pt-10 at.%B/Cr film. The addition of B is also found to be effective in reducing the noise level of CoCrPt/Cr media
Keywords :
boron alloys; chromium; chromium alloys; cobalt alloys; coercive force; ferromagnetic properties of substances; hard discs; magnetic recording; magnetic thin films; noise; platinum alloys; sputtered coatings; CoCrPtB-Cr media; high coercivity media; high density recording media; magnetic properties; noise characteristics; optimum compositions; Argon; Chromium; Coercive force; Magnetic films; Magnetic noise; Magnetic properties; Magnetic recording; Saturation magnetization; Sputtering; Substrates;
Journal_Title :
Magnetics, IEEE Transactions on
