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Cr-Ta2O5 seedlayer for recording media on alternative substrates

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2 Author(s)
Xiong, Wei ; Mater. Res. Corp., Orangeburg, NY, USA ; Hoo, Hung‐Lee

Cr-Ta2O5 pre-coat significantly improved the coercivity and recording performance of CoCrPtTa/Cr films on glass-ceramic substrate. X-ray diffraction patterns showed enhanced Cr (110) and in-plane Co (100) textures due to Cr-Ta2O5 pre-coat. X-ray photoelectron spectroscopy indicated the existence of Ta2O5 in Cr-Ta2O5 film. Unlike the pure Cr, Cr-Ta2O5 film on glass-ceramic substrate displayed very fine and uniform grain structure. This might be due to the less mobile Ta2O5 oxides that prevent high-mobility Cr atoms from migration to form large grains. The impact of pre-coat thickness and sputter conditions on media magnetic properties was also investigated

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Magnetics, IEEE Transactions on  (Volume:34 ,  Issue: 4 )