Coercivity map in perpendicular media investigated by using in situ magnetic force microscopy

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机构：
[1] Bai, J.
[2] Saito, H.
[3] Ishio, S.
来源：
Ishio, S. (ishio@ipc.akita-u.ac.j) | 1600年 / American Institute of Physics Inc.卷 / 96期
关键词：
Coercive force - Magnetic fields - Magnetic films - Microstructure - Oscillations - Transmission electron microscopy;
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摘要：
The spatial distribution of coercivities in a CoCrPt-SiO2 granular perpendicular magnetic recording medium was measured by using in situ magnetic force microscopy. The coercivity map that shows the spatial distribution of coercivities was obtained at 1 kOe intervals in the medium. The local coercivities within microscopic areas of less than 100 nm square were evaluated with a good reproducibility. Measuring coercivity map will become a technique for investigating the influence of the spatial distribution of coercivities on the medium noise in perpendicular recording. © 2004 American Institute of Physics.
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