The Role of Media Property Distribution in HAMR SNR

  title={The Role of Media Property Distribution in HAMR SNR},
  author={Hai Li and Jian-Gang Zhu},
  journal={IEEE Transactions on Magnetics},
Generally distributions in anisotropy field and grain-to-grain exchange are considered to be the main sources of noise in heat assisted magnetic recording (HAMR). Through systematic micromagnetic modeling based upon the Landau-Lifshitz-Bloch (LLB) equation, however, we show that variation in the Curie temperature from grain-to-grain is the primary contributor to noise in HAMR. Additionally, small and narrowly-distributed exchange coupling turns out to be helpful under certain circumstances or… CONTINUE READING


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