Abstract
We have demonstrated the fabrication of a spin-valve head with a CoFe∕PtMn antiferromagnetic (AFM) exchange-biasing layer for longitudinal stabilization. The application of Golden field annealing means the two AFM layers can be made of the same material with the same TB. The AFM layers may then be chosen to optimize pinning strength, corrosion resistance, etc. The transfer curve based on a pattered head structure with PtMn AFM stabilized free layer is smooth and free of any hysteresis. The head also has good linearity and bias point, and the performance is comparable with the standard abutted permanent magnet junction stabilization. Further optimization is expected to improve the performance, enabling an areal density of >120Gb∕in.2
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