Abstract
The local structure obtained from calcium K -edge XAFS experiments in CaO-B 2 O 3 glasses is described. The average coordination number of oxygen around Ca 2+ ions and the mean distance for Ca-O are found to be approximately 6 and 2.40∼2.41Å, respectively. The Ca 2+ ions have a disordered octahedral geometry and a strong preference to reside in vicinity of negatively charged non-bridging and bridging oxygen in the large cages of the B-O network structure. The XAFS results are in good agreement with MD simulation results.
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CITATION STYLE
Handa, K., Ohtori, N., Iwadate, Y., Umesaki, N., & Iwasaki, H. (1999). XAFS Studies of Alkaline-Earth Borate Glasses. Japanese Journal of Applied Physics, 38(S1), 148. https://doi.org/10.7567/jjaps.38s1.148
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