HIGH-DENSITY RECORDING PERFORMANCE OF MEDIA WITH COCRPTTA CR/NIP ON GLASS-CERAMIC SUBSTRATE/

The comparison of magnetic recording performance at high density betwe en two kinds of CoCrPtTa/Cr/NiP thin films, one with Co(1 (1) over bar 20)//Cr(200) and another with Co(10 (1) over bar 1)//Cr(110) texture, on glass ceramic substrate is reported. The testing results have show n that the former films have lower transition noise, smaller partial e rasure effect, and better offtrack capability in partial response maxi mum likelihood channel which also enhances the estimated areal density . The better performance of the films with Co(1 (1) over bar 20)//Cr(2 00) texture may be attributed to microstructure of Cr underlayer which results in bicrystal structure of magnetic layer and smaller Cr grain size. (C) 1997 American Institute of Physics.