TY - JOUR
T1 - Analysis of magnetization transition in perpendicular magnetic recording for narrow transition width
AU - Kato, Takeshi
AU - Miura, Kenji
AU - Aoi, Hajime
AU - Muraoka, Hiroaki
AU - Nakamura, Yoshihisa
N1 - Funding Information:
This work was partly supported by the IT-Program (RR2002) and Research and Development for Next-Generation Information Technology from MEXT, Japanese Government and Storage Research Consortium. The author would like to thank Dr. M. Hashimoto for his helpful discussions.
PY - 2008/11
Y1 - 2008/11
N2 - In order to achieve high linear density recording, a narrow transition width or small transition parameter, a, is imperative. Reducing the grain size improves transition jitter and also reduces the transition width. The correlation between transition width and transition jitter was examined. The observed discrepancy from simple, analytical expressions introduces more realistic magnetization transitions with island magnetization reversals. It was found that island reversals increase the transition width, rather than the transition jitter, which must be suppressed to attain high linear density.
AB - In order to achieve high linear density recording, a narrow transition width or small transition parameter, a, is imperative. Reducing the grain size improves transition jitter and also reduces the transition width. The correlation between transition width and transition jitter was examined. The observed discrepancy from simple, analytical expressions introduces more realistic magnetization transitions with island magnetization reversals. It was found that island reversals increase the transition width, rather than the transition jitter, which must be suppressed to attain high linear density.
KW - High linear density
KW - Perpendicular magnetic recording
KW - Transition jitter
KW - Transition width
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U2 - 10.1016/j.jmmm.2008.08.015
DO - 10.1016/j.jmmm.2008.08.015
M3 - Article
AN - SCOPUS:53749095932
VL - 320
SP - 2900
EP - 2903
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 22
ER -