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Effects of carbon underlayer and substrate temperature on the structural and magnetic properties of Co86Cr12Ta2 thin-film media

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3 Author(s)
Yang, Cheng ; The Center for Micromagnetics and Information Technologies (MINT), Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455 ; Sivertsen, J.M. ; Judy, J.H.

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A thin carbon underlayer can promote the growth of the c axis of Co86Cr12Ta2 film perpendicular to the film surface at a much thinner stage. A smaller lattice constant c of the hcp structure was observed for Co86Cr12Ta2 thin-film media on a sputtered carbon underlayer. High substrate temperature increases the perpendicular coercivity of the Co86Cr12Ta2 film significantly. This increase is due to the decrease in the c/a ratio of Co hcp lattices. © 1997 American Institute of Physics.

Published in:
Journal of Applied Physics  (Volume:81 ,  Issue: 8 )

Date of Publication: Apr 1997

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