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Performance evaluation of discrete track perpendicular media for high recording density

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4 Author(s)
Y. Soeno ; Devices Dev. Center, TDK Corp., Nagano, Japan ; M. Moriya ; A. Kaizu ; M. Takai

Read-write (RW) performance of a discrete track perpendicular recording medium was evaluated. It was confirmed that track following was available by using the pre-formed servo pattern. Byte-error-rate (BER) evaluations showed the written signal on the discrete track medium was stable due to the effect of discrete tracks and grooves for preventing side-writing. The extendibility of this technology was evaluated using a signal-to-noise-ratio (SNR) simulation using the Landau-Lifshitz-Gilbert (LLG) method. The result showed that this medium has a potential for achieving a higher SNR at higher track density.

Published in:

IEEE Transactions on Magnetics  (Volume:41 ,  Issue: 10 )