TY - JOUR
T1 - 3-D FEM analysis of thermal degradation in writing and reading characteristics of a perpendicular magnetic head
AU - Kurose, H.
AU - Ohtake, M.
AU - Miyagi, Daisuke
AU - Takahashi, N.
PY - 2008/11/1
Y1 - 2008/11/1
N2 - In order to achieve high-density recording, the detailed behavior of thermal degradation should be investigated. In this paper, the degradation of magnetization of high-density recording medium is examined using the 3-D finite element method (FEM) combined with the modeling of Stoner-Wohlfarth (SW) particles and Neel-Arrhenius switching probability. It is shown that the anisotropy field Hk suppressed the thermal degradation and the saturation magnetization Ms enhances it. The thermal degradation is also changed by the amplitude of magnetization.
AB - In order to achieve high-density recording, the detailed behavior of thermal degradation should be investigated. In this paper, the degradation of magnetization of high-density recording medium is examined using the 3-D finite element method (FEM) combined with the modeling of Stoner-Wohlfarth (SW) particles and Neel-Arrhenius switching probability. It is shown that the anisotropy field Hk suppressed the thermal degradation and the saturation magnetization Ms enhances it. The thermal degradation is also changed by the amplitude of magnetization.
KW - Finite element method
KW - Perpendicular magnetic recording
KW - Stoner-Wohlfarth particle
KW - Thermal degradation
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U2 - 10.1016/j.jmmm.2008.08.001
DO - 10.1016/j.jmmm.2008.08.001
M3 - Article
AN - SCOPUS:53749088443
VL - 320
SP - 2917
EP - 2920
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 22
ER -