TY - JOUR
T1 - Correlation between transition parameter and transition jitter using Voronoi cell modeling
AU - Miura, K.
AU - Muraoka, H.
AU - Aoi, H.
AU - Nakamura, Y.
N1 - Funding Information:
This work was partly supported by the IT-program (RR2002) from MEXT, Japanese Government, and SRC.
PY - 2005/2
Y1 - 2005/2
N2 - We investigated transition width and transition jitter using Voronoi cell modeling including the effect of the writing process. The mean diameter of Voronoi cells corresponded to the physical grain size or the magnetic cluster size. The applied head field strength in each cell was determined by both dynamic coercivity and the head field gradient at the medium dynamic coercivity, which was characterized by a linear profile. As a result, transition jitter was strongly influenced by grain size or magnetic cluster size. From this calculation, the realistic ratio of transition width and transition jitter was about 10:1-15:1. However, the ratio may change by changing the writing condition or medium parameter. It was revealed that regularization of cells did not contribute to high resolution and low noise.
AB - We investigated transition width and transition jitter using Voronoi cell modeling including the effect of the writing process. The mean diameter of Voronoi cells corresponded to the physical grain size or the magnetic cluster size. The applied head field strength in each cell was determined by both dynamic coercivity and the head field gradient at the medium dynamic coercivity, which was characterized by a linear profile. As a result, transition jitter was strongly influenced by grain size or magnetic cluster size. From this calculation, the realistic ratio of transition width and transition jitter was about 10:1-15:1. However, the ratio may change by changing the writing condition or medium parameter. It was revealed that regularization of cells did not contribute to high resolution and low noise.
KW - Perpendicular magnetic recording
KW - Transition jitter
KW - Transition width
KW - Voronoi cells
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U2 - 10.1016/j.jmmm.2004.10.021
DO - 10.1016/j.jmmm.2004.10.021
M3 - Article
AN - SCOPUS:12344337323
SN - 0304-8853
VL - 287
SP - 133
EP - 137
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - SPEC. ISS.
ER -