Crystallographic Structure and Magnetic Properties of Co Fine Particles Encaged in Carbon Nanocapsules
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概要
- 論文の詳細を見る
Cobalt crystallites wrapped in multilayered graphitic cages (nano-capsules) were produced by an arc discharge method. Structural characterization by X-ray diffraction and transmission electron microscopy revealed that the wrapped cobalt particles were in an fcc phase, with a trace amount of hcp Co. The particles were nominally spherical in shape, and typically 10-100 nm in diameter. The core Co metal was protected against oxidation and coalescence. Temperature dependence of the saturation magnetization (M_s) and the coercive force (H_c) was measured between -200℃ and 800℃ for powder samples, which revealed that the measured M_s was consistent with that for fcc Co over that temperature range. Magnetic tapes prepared from the present powder exhibited H_c of 250 Oe and 30% remanent magnetization of the M_s at room temperature.
- 社団法人応用物理学会の論文
- 1995-10-15
著者
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Saito Yahachi
Department Of Electrical And Electronic Engineering Faculty Of Engineering Mie University
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Saito Yahachi
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Masuda Morio
Department Of Electrical And Electronic Engineering Faculty Of Engineering Mie University
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