Quasi-static and dynamic analysis of spin valve tape heads with synthetic free and pinned layers vs. heads with a conventional free layer and a synthetic pinned layer

Summary form only given. A comparative analysis of tape heads with two spin valve designs is presented: spin valves with synthetic free and pinned layers (SF-SAF/AF) (A. Veloso and P.P. Freitas, J. Appl. Phys., vol. 87, no. 9, pp. 5744-5746, 2000) vs. spin valves with a conventional free layer and a synthetic pinned layer (SAF/AF). Their structures are: SF-SAF/AF: Ta/Ni/sub 81/Fe/sub 19//Ru/Ni/sub 81/Fe/sub 19//Co/sub 82/Fe/sub 18//Cu/Co/sub 82/Fe/sub 18//Ru/Co/sub 82/Fe/sub 18//Mn/sub 74/Ir/sub 26//Ta (10 /spl Aring//20 /spl Aring//6 /spl Aring//22 /spl Aring//10 /spl Aring//25 /spl Aring//23 /spl Aring//6 /spl Aring//18 /spl Aring//100 /spl Aring//30 /spl Aring/); SAF/AF: Ta/Ni/sub 81/Fe/sub 19//Co/sub 82/Fe/sub 18//Cu/Co/sub 82/Fe/sub 18//Ru/Co/sub 82/Fe/sub 18//Mn/sub 74/Ir/sub 26//Ta (10 /spl Aring//30 /spl Aring//25 /spl Aring//23 /spl Aring//23 /spl Aring//6 /spl Aring//18 /spl Aring//100 /spl Aring//30 /spl Aring/).