INTERACTIONS AND REVERSAL PROCESSES IN COCRTA COCRTAPT THIN-FILMS/

Switching behaviour and intergranular interactions have been studied i n CoCrTa/CoCrTaPt double layer thin films sputtered on polished and te xtured substrates. From the combination of a low noise and a high coer civity alloy, a high quality thin film has been obtained with very goo d properties for high density magnetic recording media. Coercivities h igher than 2 kOe, uniform switching and a reduction in the intergranul ar exchange coupling have been observed from the hysteresis loops, rem anence curves and Delta M(H) technique. Also, it is shown that circumf erential texturing of the substrate results in preferential magnetic p roperties along the texture lines such that there is an apparent reduc tion in interactions perpendicular to the texture direction.