Magnetic Properties and Domain Structures of Co-C Nanogranular Films Prepared by Pulsed Filtered Vacuum Arc Deposition
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概要
- 論文の詳細を見る
Granular Co_xC_<1-x> (x=60,65,70 at.%) films were prepared by pulsed filtered vacuum arc deposition. Subsequent thermal annealing was performed in vacuum at various temperatures. The films were characterized by non-Rutherford backscattering spectrometry, Raman Spectroscopy, atomic force micoscopy and magnetic force microscopy. Clear magnetic force microscopy images were only observed in the films after annealing at a sufficiently high temperature, indicating that there was perpendicular magnetic anisotropy in these films. The M-H hysteresis loops of the films were measured by a SQUID magnetometer. The optimum annealing temperature for the maximum coercivity was found to depent on the cobalt concentration. For a typical Co_<65>C_<35> sample of 20nm thick after annealing at 350℃ in vacuum for 1 hour, the saturation magnetization was 500 emu/cm^3, the coercivity was 460 Oe, and the ratio of the remanence o the saturation magnetization was 0.68 at 300K.
- 社団法人電子情報通信学会の論文
- 1999-11-09
著者
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Wong S.p.
Department Of Electronic Engineering And Materials Science And Technology Research Center The Chines
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WONG S.
Department of Computer Science and Information Systems, University of Hong Kong
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Ke N
Department Of Electronic Engineering And Materials Science And Technology Research Center The Chines
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Wong S.
Department Of Chemistry The University Of Western Ontario
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Cheung W.y.
Department Of Electronic Engineering And Materials Science And Technology Research Center The Chines
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Cheung W.
Department Of Electronic Engineering & Materials Science And Technology Research Centre The Chin
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Ke N.
Department of Electronic Enginneering The Chinese University of Hong Kong
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Chiah M.f.
Department Of Electronic Engineering And Materials Science And Technology Research Center The Chines
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Zhang X.
Department of Aerospace Engineering Sciences
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Wang H.
Department Of Electronic Engineering And Materials Science And Technology Research Center The Chines
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Ke N.
Department Of Electronic Engineering And Materials Science And Technology Research Center The Chines
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Chiah M.
Department of Electronic Engineering & Materials Science and Technology Research Centre, The Chinese
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Liu H.
Department of Physics, Hong Kong University of Science and Technology
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Zhang X.x.
Department Of Physics Hong Kong University Of Science And Technology Clear Water Bay
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Liu H.
Department Of Orthopaedic Surgery National Taiwan University Hospital
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Wang H.
Department Of Anatomy And Cell Biology The George Washington University Medical Center
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Cheung W.
Department Of Biology The Chinese University Of Hong Kong
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Liu H.
Department Of Electronic & Electrical Engineering The University Of Sheffield
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