NANO-MULTILAYERS WITH HIGH PERPENDICULAR ANISOTROPY FOR MAGNETIC RECORDING
来源期刊：Acta Metallurgica Sinica2003年第4期
论文作者：K.Kang T.Suzuki T.Yang B.H.Li
Key words：recording media; perpendicular magnetic anisotropy; activation volume;
Abstract: (FePt/Ag)n nano-multilayers were deposited on MgO (100) single crystal with laser ablation and then subjected to annealing. FePt L1o grains with (001) texture and thus a large perpendicular magnetic anisotropy constant Ku of the order of 106J/m3 were formed. A thick Ag layer is found to be favorable for decreasing the dispersion of the easy axis for magnetization. The measurement of time decay of magnetization gave rise to a small activation volume of the order of 10-25 m3, showing the promising of being the recording medium for future high density perpendicular recording.
K.Kang1，T.Suzuki1，T.Yang2，B.H.Li2
(1.Information Storage Materials Laboratory, Toyota Technological Institute, Nagoya 468-8511, Japan;
2.Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China)
Abstract:(FePt/Ag)n nano-multilayers were deposited on MgO (100) single crystal with laser ablation and then subjected to annealing. FePt L1o grains with (001) texture and thus a large perpendicular magnetic anisotropy constant Ku of the order of 106J/m3 were formed. A thick Ag layer is found to be favorable for decreasing the dispersion of the easy axis for magnetization. The measurement of time decay of magnetization gave rise to a small activation volume of the order of 10-25 m3, showing the promising of being the recording medium for future high density perpendicular recording.
Key words:recording media; perpendicular magnetic anisotropy; activation volume;
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