Induced Anisotropy in Iron-Deficient Ni-Co Ferrites at Low Temperatures

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概要

• 論文の詳細を見る

• The anisotropy Ku at -183℃ in iron-deficient Ni-Co ferrites coored down from room temperature in magnetic field is observed. It increases rapidly with decreasing contents of Fe_20_3 and seems to attain a saturation value at a certain value of Fe_20_3 contents. It also increases approximately in proportion to Co concentration. The activation energy for this process is about 0.25 to O.4 eV. This anisotropy has been explained in terms of the preferential occupation of Co^<3+> ions in the four kinds of 16d sites arising from electron migration between Co^<2+> and Co^<3+> ions. The anisotropy Ku is not observed in iron defient Mg-, Mn-, and Cu- ferrites containing a small amount of Co.

• 社団法人日本物理学会の論文
• 1964-03-05

著者

• Hoshino Masani

  Sendai Factory Sony Corporation

• MIZUSHIMA Masahito

  Sendai Factory, Sony Corporation

• Mizushima Masahito

  Sendai Factory Sony Corporation

• Mizushima M.

  Sendai Factory, Sony Corporation

関連論文

• Induced Anisotropy in Iron-Deficient Ni-Co Ferrites at Low Temperatures
• Diffusion After Effect in Cobalt-Substituted Ferrites
• Magnetic Properties of Cobalt-Substituted Ni-Zn Ferrites

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