The Recovery of Initial Magnetic Susceptibility in Pure Nickel

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概要

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• The process of recovery in cold-worked pure nickel was investigated by means of the initial magnetic susceptibility and the electrical resistance measurements. In our specimens, which were elongated by about 5 percent, the recovery of the initial magnetic susceptibility was observed above 450℃, and could not be observed below that temperature. The recovery in the temperature range of our investigation was expressed by logarithmic law, and analysed by Kuhlmann's formulation, its activation energy being 3.0 ev. This value is in good agreement with the activation energy of self-diffusion in pure nickel. Therefore, it is considered that the recovery of the initial magnetic susceptibility is due to the disappearance of dislocation in the stage of recrystallization. On the other hand, the recovery below 450℃ in which the change of initial magnetic susceptibility could not be observed was investigated by measuring the electrical resistance and the activation energy 0.91 ev was obtained. This value is in good agreement with the activation energy of vacancy migration. Therefore, it must be assumed that the disappearance of vacancy does not affect the initial magnetic susceptibility.

• 社団法人日本物理学会の論文
• 1960-08-05

著者

• Asanuma Mitsuru

  Department Of Physics Faculty Of Science Hokkaido University

• Asanuma M.

  Department of Physics, Faculty of Science, Hokkaido University

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• The Recovery of Initial Magnetic Susceptibility in Pure Nickel
• On the Magnetic Aging of Commercial Pure Iron

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