Diffusion After Effect in Cobalt-Substituted Ferrites

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概要

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• A Richter-type peak of magnetic loss and the disaccommodation were observed for cobalt-substituted Ni-Zn ferrites containing Fe_2O_3 less than the stoichiometric composition. These phenomena can be interpreted in terms of the diffusion of electrons between Co^<2+> ions and Co^<3+> ions. The induced anisotropy caused by the preferential occupation of CO^<3+> ions in four kinds of 16d sites may explain these phenomena. Relaxation times are represented by the equation τ=τ_∞exp(Q/kT), where τ_∞ are approximately 10^<-17> to 10^<-15> sec for the Richter-type peak and 10^<-10> to 10^<-11> sec for the disaccommodation. Activation energies are about 0.8 to 1.0 eV for the former, and about 0.5 to 0.7 eV for the latter.

• 社団法人日本物理学会の論文
• 1963-10-05

著者

• Mizushima Masahiro

  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
• Etch Pits in Manganese Ferrite Single Crystals

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