TY - JOUR
T1 - Dependence of recorded bit-patterns on saturation magnetization in microwave assisted magnetic recording
AU - Tanaka, Terumitsu
AU - Kato, Ayumu
AU - Kawano, Satoshi
AU - Narita, Naoyuki
AU - Nozaki, Yukio
AU - Kanai, Yasushi
AU - Matsuyama, Kimihide
PY - 2010
Y1 - 2010
N2 - Signal recording processes were simulated using micromagnetic calculation for microwave assisted magnetic recording in perpendicular magnetic media. Strong magnetostatic field caused by the large saturation magnetization of the media tends to deteriorate recorded bit patterns resulting in low signal to noise ratio for the play back signal. The moderate exchange interaction fields were shown to improve recording characteristics and increase signal to noise ratio even for the large saturation magnetization media. The influence of thermal fluctuation fields on recording characteristics was also discussed and the influence was negligible for the media assumed in this study.
AB - Signal recording processes were simulated using micromagnetic calculation for microwave assisted magnetic recording in perpendicular magnetic media. Strong magnetostatic field caused by the large saturation magnetization of the media tends to deteriorate recorded bit patterns resulting in low signal to noise ratio for the play back signal. The moderate exchange interaction fields were shown to improve recording characteristics and increase signal to noise ratio even for the large saturation magnetization media. The influence of thermal fluctuation fields on recording characteristics was also discussed and the influence was negligible for the media assumed in this study.
KW - Micromagnetic simulation
KW - Microwave assisted magnetic recording
KW - Perpendicular magnetic recording
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U2 - 10.1541/ieejfms.130.648
DO - 10.1541/ieejfms.130.648
M3 - Article
AN - SCOPUS:77955621534
SN - 0385-4205
VL - 130
SP - 648-654+6
JO - IEEJ Transactions on Fundamentals and Materials
JF - IEEJ Transactions on Fundamentals and Materials
IS - 7
ER -