Magnetic Characteristics of TbFeCo Fabricated on Isolated FePt Grains(Magnetic and Magneto-Optical Recording Materials)
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概要
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TbFeCo film is fabricated on isolated FePt grains to increase the domain wall coercivity (H_w) of TbFeCo film by exchange coupling effect between TbFeCo and FePt. The transition metal (TM) moment has a dominant charge in TbFeCo film ranging from room temperature (T_<room>) to Curie temperature. The FePt has average grain sizes such as 29.6, 16.6 and 7.0 nm in diameter, which are perpendicularly magnetized with a high coercivty (H_c), as high as 30〜45 kOe at T_<room>. The TbFeCo/FePt composite film shows higher H_w, H_c and M_sH_w than those of the single layer of TbFeCo film. We also estimate the amount of interfacial wall energy between TbFeCo and FePt.
- 2004-11-01
著者
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Itoh A
Nihon University
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Nakagawa K.
College of science and technology, Nihon University
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Itoh A.
College of science and technology, Nihon University
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Tsukamoto A.
Nihon University
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Itoh Y.
Graduate School of Sci. and Tech. Nihon Univ.
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Tsukamoto A.
College of science of Technology Nihon Univ.
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Nakagawa K.
Department of Electronics & Computer Science, College of Science & Technology, Nihon University
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