(100-x)(PbO・GeO_2)・xRO(R=Mg,Ca,Sr,Ba)におけるNi^<2+>イオンの光吸収スペクトルと赤外吸収

概要

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Optical absorption spectra of Ni^<2+>ions in (100-x) (・GeOPbO_2)・xRO(R=Mg, Ca, Sr, Ba) glasses containing NiO and their IR absorption spectra were measured. The ligand field strength and the Racah's B parameter were calculated from the absorption; wave number of Ni^<2+> ions. The effect of alkaline earth metal added to matrix on the state of Ni^<2+> ions and on glass structure was discussed. The peak wave number corresponding to the ligand field strength increased and the Racah parameter decreased with increasing alkaline earth metal content, suggesting that a part of GeO_4 units was transformed to GeO_6 units with increasing alkaline earth metal content. The result obtained suggests that GeO^8_6-ions are formed by adding alkaline earth metal ions to the glass network.
社団法人日本セラミックス協会の論文
1988-03-01