No abstract

Advanced write head designs improve write efficiency, by reducing yoke length to less than 15 m, adapting a sunken coil/P1 pedestal structure with stitched pole, and utilizing high moment poles with greater than 2 Tesla moment. Sufficient bit-error rate was achieved up to 680 kBPI, using heads with 50-60 GB/in 2 dimensions. For wider track width heads, spin-stand testing showed good writing parametrics and soft error rate up to 1.0-1.1 Gb/s channel data rate, with product electronics and channels. Feasibility of high-speed recording up to 1.5 Gb/s is demonstrated using experimental write drivers.Index Terms-High data rate, high moment, write head.