Characteristics of Glassy PbO-GeO_2 Binary System by X-Ray Diffraction, Infrared Absorption, Dielectric Constant, and Intrinsic Absorption

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概要

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• Four characteristics of the glassy PbO-GeO_2 system were examined. X-ray diffraction pattern of the sample of 50mol% PbO showed the maximum intensity at d-value 2.885Å which was in accordance with that of the compound PbO・GeO_2 (relative intensity 60%). Infrared absorption band of the glassy GeO_2 at 11.5μ, which would be assigned as v_3 mode of tetrahedral GeO_4 unit, shifted toward longer wavelength side with increasing PbO content and the shift showed a plateau at 47-50mol %PbO. Dielectric constant also kept neatly constant value at 47-50mol%PbO The wavelengths corresponding to the intrinsic absorption coefficients per PbO mole fraction (e.g. 70cm^<-1>/m. f.) increase linearly with increasing PbO content, having the inflection point at 45 and 55mol%PbO. The ionic character of the bond GeO_4-Pb is discussed on the basis of the results.

• 社団法人日本物理学会の論文
• 1974-02-15

著者

• Hagiwara Hisao

  National Research Institute For Metals

• OYAMADA Ryozo

  National Research Institute for Metals

関連論文

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