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Title: FeCoC film as the soft magnetic underlayer for perpendicular media
Authors: Soo, E.W.
Zhou, T.J.
Wang, J.P. 
Issue Date: 15-May-2002
Citation: Soo, E.W., Zhou, T.J., Wang, J.P. (2002-05-15). FeCoC film as the soft magnetic underlayer for perpendicular media. Journal of Applied Physics 91 (10 I) : 8019-8021. ScholarBank@NUS Repository.
Abstract: FeCoC granular thin films are prepared and studied as the soft magnetic layer in order to obtain a low noise double-layered perpendicular recording medium. FeCoC granular soft magnetic underlayer prepared by cosputtering at room temperature showed good soft magnetic properties; with coercivity of a few oersteds and B s of 1.4-1.7 T. Using a spin-stand and a ring-type head, sharper transitions can be obtained in the [Co/Pd] n media with an FeCoC soft underlayer at higher recording density compared to media without a soft magnetic layer. No spike noise was observed in the read back signals for [Co/Pd] n media with an FeCoC granular film as the soft magnetic underlayer. Preparing the [FeCo/C] n laminated films by alternately sputtering FeCo and C layers allows the properties of the films to be flexibly adjusted. A B s of 1.9 T with relative permeability of 100-400 and coercivity lower than 40 Oe can be obtained with laminated [FeCo/C] n (210 nm) multilayer thin films. © 2002 American Institute of Physics.
Source Title: Journal of Applied Physics
ISSN: 00218979
DOI: 10.1063/1.1452268
Appears in Collections:Staff Publications

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