Optical Spectroscopic Study of Lead Silicate Glasses Doped Heavily with Iron Oxide

摘要

Opticla absorption was investigated as a for lead silicate glasses containing Fe_3O_4 up to 10 mol/100, which have been melted under air or argon atmosphere. The absorption coefficient over the whole optical range increased with increase of iron content. The variations of the spectrum profiles were also observed with Fe~2+ content; the tail from UV region shift- ed to low energy side and another absorption band (near 14500 cm~-1) beside d-d transitions was observed. These were considered to be caused by the interaction including the charge transfer between Fe~2+ and Fe~3+ ions.