Title :
Substrate effects on the magnetic characteristics of sputtered media
Author :
Onishi, Y. ; Matsumura, H. ; Hase, T. ; Hayashi, H. ; Sato, M. ; Katsumoto, K.
Author_Institution :
Kobe Steel Ltd., Japan
fDate :
9/1/1989 12:00:00 AM
Abstract :
The magnetic characteristics of C/CoNiCr/Cr longitudinal recording media on NiCuP-plated substrates and various Al-Mg alloy substrates were investigated and compared with the conventional NiP-plated substrates. It was found that the media on the NiCuP-plated substrates had a flatter envelope waveform. The error characteristics of the media directly sputter-deposited on the Al-Mg alloy substrate made from high-purity Al ground metal or by rapid solidification were almost the same as those of the media on the NiP substrates. The Al-Mg alloy substrate finished by electrolytic abrasive polishing exhibited a higher resistance to corrosion than that finished by diamond turning
Keywords :
carbon; chromium; chromium alloys; cobalt alloys; magnetic recording; magnetic thin films; nickel alloys; sputtered coatings; Al-Mg alloy substrates; C-CoNiCr-Cr sputtered films; Ni-Cu-P plated substrates; diamond turning; electrolytic abrasive polishing; envelope waveform; error characteristics; longitudinal recording media; magnetic characteristics; rapid solidification; resistance to corrosion; Abrasives; Chromium alloys; Costs; Disk recording; Hard disks; Iron alloys; Manganese alloys; Silicon alloys; Steel; Substrates;
Journal_Title :
Magnetics, IEEE Transactions on
