Abstract
X-ray photoelectron spectroscopy measurements of zinc phosphate glasses with compositions between 30 and 50 mol% P 2O 5 were used to determine the influence of systematically varied P 2O 5 content on the oxygen bonding of the glass network. Oxygen 1s spectra of zinc phosphate glasses are described in terms of bridging and non-bridging oxygens which are separated by 1.5 eV. The orthophosphate-like oxygen bonding is obtained for binary zinc phosphate glass containing 33 mol% P 2O 5. The bonding becomes progressively metaphosphate-like with increasing P 2O 5 content and is correlated with the relative proportions of bridging and non-bridging oxygens.
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