STRUCTURE OF BINARY ANTIMONY OXIDE GLASS

Antimony oxide is known as a network-former of glass. There are, howev er, few reports on this glass and most of those include some other net work-former oxide or intermediate oxide. In this paper, the determinat ion of the glass forming region and the measurement of X-ray fluoresce nce spectra and infrared spectra are carried out to clarify the struct ure of glass in binary antimonate system with alkali and alkaline eart h oxide. Glass is obtained in the Li2O, Na2O, K2O, CaO, SrO, BaO-Sb2O3 system, but not in the MgO-Sb2O3 system and the Sb2O3 single oxide. F rom the measurement of X-ray fluorescence spectra and infrared spectra , the structure of the antimony complex anion in these glasses is iden tified as the same structure as stibiotantalite type which consists of tri-valent and penta-valent ions in the same amount.