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Effects of CrNi pre-layer on magnetic properties of CoCrTa longitudinal media

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6 Author(s)
Okumura, Y. ; Hard Disk Div., Kubota Corp., Itami, Japan ; Yasui, M. ; Akita, T. ; Maeda, M.
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We have found that higher coercivity can be achieved on CoCrTa/Cr films by introducing a CrNi pre-layer between underlayer Cr and NiP plated layer. Coercivity is dependent on the Ni content in CrNi layer, and shows a maximum at Ni=40at%. Comparing crystallographic texture and microstructure of the media with and without Cr60Ni40 pre-layer, we concluded that the increase of coercivity is attributed to a reduced intergranular magnetic coupling

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Magnetics, IEEE Transactions on  (Volume:33 ,  Issue: 5 )