TY - JOUR
T1 - High frequency switching in bit-patterned media
T2 - A method to overcome synchronization issue
AU - Sbiaa, R.
AU - Piramanayagam, S. N.
PY - 2008
Y1 - 2008
N2 - In this study, we show that high frequency reversal of magnetization for over Tbits in.2 recording density can be controlled by adjusting the magnetic field, media properties, and bit geometry. Using micromagnetic simulation, magnetization reversal speed depends strongly on exchange coupling (A) and the ratio between applied and anisotropy fields. The analysis also shows the effect of anisotropy variation and interbit interaction on magnetization switching. When high frequency write field is applied to less than a half bit, the switching may not occur for A higher than an optimal value. This characteristic can be used to reduce overwriting on adjacent bits.
AB - In this study, we show that high frequency reversal of magnetization for over Tbits in.2 recording density can be controlled by adjusting the magnetic field, media properties, and bit geometry. Using micromagnetic simulation, magnetization reversal speed depends strongly on exchange coupling (A) and the ratio between applied and anisotropy fields. The analysis also shows the effect of anisotropy variation and interbit interaction on magnetization switching. When high frequency write field is applied to less than a half bit, the switching may not occur for A higher than an optimal value. This characteristic can be used to reduce overwriting on adjacent bits.
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U2 - 10.1063/1.2831692
DO - 10.1063/1.2831692
M3 - Article
AN - SCOPUS:38049078330
SN - 0003-6951
VL - 92
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 1
M1 - 012510
ER -