X-Ray Study on the Binding Properties of Cu_2O and Ag_2O Crystals

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概要

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• Crystallographical properties of the chemically prepared powder samples of Ag_2O and Cu_2O were investigated by an X-ray diffractometer, in relation to their bonding characters. The lattice constant is 4.720±0.004A for Ag_2O and 4.268±0.001A for Cu_2O. The thermal expansion coefficient of the lattice is 1.9 × 10^<-6> for Cu_2O. The root-mean-square amplitude of the thermal lattice vibration is determined as 0.26A for Cu_2O and 0.40A for Ag_2O at room temperature. The mean lattice strain is 1.4% for Ag_2O and 0.15% for Cu_2O, respectively. The thermal decomposition of Ag_2O was also observed. The obtained results suggest that the binding force between metallic and oxygen atoms is much weaker in Ag_2O than in Cu_2O, which can not be expected from the purely ionic model for the present crystals.

• 社団法人日本物理学会の論文
• 1960-11-05

著者

• SUZUKI T.

  Institute for Laser Science, University of Electro-Communications

• Suzuki T.

  Institute of Physics, College of General Education, University of Tokyo

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• X-Ray Study on the Binding Properties of Cu_2O and Ag_2O Crystals

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