Effect of the Cr75Ti25 intermediate layer on magnetic and recording properties in CoCrPt longitudinal recording media

Effects of the Cr75Ti25 intermediate layer on the magnetic and recording pr operties in CoCrPt/CoTi longitudinal recording media were investigated. Coe rcivity increased from 2100 to 3200 Oe by incorporating the 50 nm thick Cr7 5Ti25 intermediate layer between the CoCrPt magnetic layer and the CoTi und erlayer. Improved SNR and PW50 properties were obtained compared to the med ia that had pure Cr intermediate layer. This enhancement of the coercivity and improvement of SNR and PW50 can be attributed to the increase of magnet ic decoupling effects through the Cr segregation at the grain boundaries of the magnetic layer. (C) 2001 Published by Elsevier Science B.V.