コバルトを含むリン酸塩ガラスの分光特性および磁気的気質

概要

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The spectrophotometric and magnetic properties of alkali phosphate glasses containing cobalt have been determined and interpreted in terms of the ligand field theory. The coloured glasses showed a relationship between their mass magnetic susceptibilities x_g and the absolute temperature T of the form x_g=A/T+B, A and B being constants for each glasses. The results obtained by the spectrophotometric study show that cobalt ions glasses of lower than 50 mol % of alkali oxide are in octahedral co-ordination, but that they are in tetrahedral co-ordination in glasses of more than mol % of alkali oxide. The magnetic moment is about 5.1 B.M. for the former and lower than 5.0 B.M. for the latter. The colour of the glasses varied from pink to blue with increasing temperature up to the softening temperature and the magnetic moment value of the glasses shows about 4.8 B. M.. There appears to be shifting of peak on the absorption band along the shorter wavelengths in the order from Li→Na→K→Rb, indicating different feature as distinct from that in silicate, borate and germanate glasses. The optical properties of the alkaline earth phosphate glasses were also determined.
社団法人日本材料学会の論文
1969-08-15