Time Dependent Magnetization Reversal in TbFeCo Perpendicular Magnetic Recording Media.
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概要
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In this work we report on experimental analysis and numerical simulations of the time decay of magnetization in the films of amorphous TbFeCo alloys.It is shown that experimental results can be explained on the basis of an incoherent thermally activated subnetwork magnetization reversal model.Thermally activated reversal of transition metal subnetwork and associated compensating reversal of the antiferromagnetically coupled rare-earth subnetwork may result in effective stabilization of the net film magnetization.The unique combination of a small activation diameter Da =5-6nm and high thermal stability parameter k〜250 makes TbFeCo amorphous films an excellent candidate for perpendicular recording medium at over 100 Gbit/in~2 areal recording density.
- 社団法人日本磁気学会の論文
- 2001-03-15
著者
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Matsumoto K.
Fujitsu Laboratories Ltd.
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Ozaki K.
Fujitsu Laboratories Ltd.
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A. Chekanov
Fujitsu Laboratories Ltd.
関連論文
- Improved Recording Resolution of Amorphous RE-TM Alloy Perpendicular Magnetic Recording Media
- TbFeCo as a Perpendicular Magnetic Recording Material
- Magnetic Recording on Magneto-Optical Media Using Merge Type Giant Magneto-Resistive Head
- MCD Measurement at the Tb M_-edges of Tb_Fe_xCo_ Perpendicular Magnetization Films(Magnetism and Spin Dynamics)
- Time Dependent Magnetization Reversal in TbFeCo Perpendicular Magnetic Recording Media.
- Thermally Assisted Magnetic Recording Using an Optical Head with NA=0.85(Selected papers from MORIS 2006 Workshop on Thermal & Optical Magnetic Materials and Devices)
- Writability challenges in high density magnetic recording media
- Incoherent subnetwork magnetization reversal and thermal stability issues in TbFeCo amorphous thin films