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Substrate effects on the magnetic characteristics of sputtered media

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6 Author(s)

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

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Magnetics, IEEE Transactions on  (Volume:25 ,  Issue: 5 )