Electronic polarizability of the oxide ion and density of binary silicate, borate and phosphate oxide glasses

摘要

A relationship between the polarizability of the oxide ion alpha(O2)-(n(o)), determined from the refractive index, and the experimental density has been established for binary oxide glasses, such as the systems of silicate, borate and phosphate. Our present conclusions suggest that the alpha(O2)-(n(o)) values increase with increasing density. The increasing rate of alpha(O2)-(n(o)) versus density depends strongly on the charge of metals in glasses. For binary glass systems, such as Bi2O3-SiO2, Bi2O3-B2O3, Sb2O3-B2O3, Sb2O3-P2O5 and Bi2O3-P2O5, the increasing rate of alpha(O2)-(n(o)) versus density is much larger (an order of magnitude ranging from one to two) than those of binary oxide glasses containing monovalent alkali and divalent metals. (C) 2004 Elsevier B.V. All rights reserved.