Crystal Distortion in Copper Ferrite-Chromite Series

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概要

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• The cation distributions in copper ferrite-chromite series and the copper ferrite quenched from high temperatures are measured by X-ray diffraction method. The lattice parameters are also measured as a function of chromium ion content and of temperature. The critical fractions of copper ions on 16d and 8a sites for the occurrence of bulk crystal distortion from cubic to tetragonal symmetry are determined. The critical temperature for the distortion of copper ferrite is 360℃. This crystal distortion depends only upon the copper ion distribution. The abrupt appearance of distortion and coexistence of two phases, cubic and tetragonal, near the critical fraction and the critical temperature suggest that this distortion is of the first order as predicted by the statistical theory. From the aging of the distortion, the activation energy for copper ion to migrate from 16d site to 8a site is obtained. From the comparison of the critical fraction of copper ion in this series with those in other mixed spinels, the origin of this crystal distortion is discussed.

• 社団法人日本物理学会の論文
• 1961-01-05

著者

• OHNISHI Haruyuki

  Department of Physics and Atomic Energy Research Institute College of Science and Engineering Nihon

• Teranishi Teruo

  Department Of Physics Faculty Of Science Hokkaido University

• OHNISHI H.

  Department of Physics and Atomic Energy Research Institute, College of Science and Engineering, Niho

関連論文

• Axial Behaviors and Confinement of the Plasma in the Mirror Field Theta Pinch
• Axial Motion and End Loss in the Slow Theta Pinch Plasma
• Plasma End Loss in a Slow Theta Pinch
• Preliminary Results on Electron Acceleration Mechanism in the Slow Theta Pinch
• Crystal Distortion in Copper Ferrite-Chromite Series
• On the Transition Temperature of Copper Ferrite
• Magnetic Anisotropy of Chalcopyrite
• End Stabilization Effect in the Slow Theta Pinch
• End Stabilization Effect in the Slow Theta Pinch
• Instabilities in the Slow Theta Pinch by Magnetic Field Asymmetry
• On the Relationship between the Deformation of Theta Pinched Plasma and the Inhomogeneity of Magnetc Field
• Cation Arrangement and Magnetic Properties of Copper Ferrite-Chromite Series
• Instability in Hot Electron Plasma Produced by a Mirror Theta Pinch
• Hot Electron Plasma Produced by Axially Rising Magnetic Field
• The Effect of Radial Space Charge Field on the Acceleration of Electrons in a Slow Theta Pinch
• Axial Behavior of a Plasma in the Slow Theta Pinch

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