An XPS Study of Oxygen Bonding in Zinc Phosphate and Zinc Borophosphate Glasses
X-ray photoelectron spectroscopy has been used to determine oxygen bonding in a series of xZnO · (1 - x)P2O5 (0.50 ≤ x ≤ 0.67) glasses. Curve fitting of the O1s spectra leads to a quantitative measure of the bridging-to-non-bridging oxygen ratio which is shown to depend on composition according to a simple structural depolymerization model. A third peak, present in the O1s spectra collected from yB2O3 · (1 - y)Zn(PO3)2 (0.00 ≤ y ≤ 0.40) glasses, is due to oxygens which link borate and phosphate tetrahedra. The relative concentrations of P-O-P, P-O-Zn and P-O-B bonds are shown to be in good agreement with a structural model which assumes that borophosphate units (BPO4) form when B2O3 is added to Zn metaphosphate glass.
R. K. Brow, "An XPS Study of Oxygen Bonding in Zinc Phosphate and Zinc Borophosphate Glasses," Journal of Non-Crystalline Solids, Elsevier, Jan 1996.
The definitive version is available at http://dx.doi.org/10.1016/0022-3093(95)00500-5
Materials Science and Engineering
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