TY - JOUR
T1 - Influence of magnetic cluster size distribution on SNR and bit error rate in perpendicular magnetic recording
AU - Hashimoto, Mitsuhiro
AU - Miura, Kenji
AU - Muraoka, Hiroaki
AU - Aoi, Hajime
AU - Nakamura, Yoshihisa
N1 - Funding Information:
This work was supported in part by the IT Program (RR2002) by MEXT, Japanese Government and SRC.
PY - 2005/2
Y1 - 2005/2
N2 - The bit error rate (BER) and signal-to-noise ratio (SNR) of perpendicular recording media were investigated with a software channel and magnetic clustering based microstructure model of irregular magnetization transitions. The calculations show that the BER is not only determined by the mean cluster size, but also by the fractional standard deviation, as is the SNR. However, the BER performance does not correlate well with the SNR. Reducing the cluster size distribution is more effective at improving the BER than the SNR. An explanation for this discrepancy can be found by considering the distribution of transition position fluctuations and transition percolation.
AB - The bit error rate (BER) and signal-to-noise ratio (SNR) of perpendicular recording media were investigated with a software channel and magnetic clustering based microstructure model of irregular magnetization transitions. The calculations show that the BER is not only determined by the mean cluster size, but also by the fractional standard deviation, as is the SNR. However, the BER performance does not correlate well with the SNR. Reducing the cluster size distribution is more effective at improving the BER than the SNR. An explanation for this discrepancy can be found by considering the distribution of transition position fluctuations and transition percolation.
KW - Cluster size distribution
KW - Error rate performance
KW - Perpendicular magnetic recording
KW - Transition percolation
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U2 - 10.1016/j.jmmm.2004.10.019
DO - 10.1016/j.jmmm.2004.10.019
M3 - Article
AN - SCOPUS:12344277570
SN - 0304-8853
VL - 287
SP - 123
EP - 127
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - SPEC. ISS.
ER -