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A. Goncharov, T. Schrefl, G. Hrkac, J. Dean, S. Bance, D. Süss, O. Ertl, F. Dorfbauer, J. Fidler:
"Recording simulations on graded media for area densities of up to 1 Tbit/in.₂";
Applied Physics Letters, 91 (2007), S. 222502-1 - 222502-3.

We report recording simulations on graded media with area densities of 1 Tbit/in.2. The media are composed of a nucleation layer exchange coupled to a hard magnetic storage layer. The nucleation layer has an anisotropy K(z) that gradually varies in order to adjust the domain wall propagation field to the write field. Bits were written with a bit length of 12 nm and a track width of 53 nm on graded media with total thickness of 21 nm and maximum anisotropy of 1 MJ/m3. The computed values for transition jitter are around 0.65 nm, depending on the intergrain exchange. ©2007 American Institute of Physics

http://dx.doi.org/10.1063/1.2804609

http://link.aip.org/link/?APPLAB/91/222502/1