Figure 3
Average local atomic structure in mullite-composition glass. (A) Differential PDF from high-energy X-ray diffraction. The slope for \(r\) < 1 Å is \(-4\pi \rho\), with \(\rho\) = 2.912 g cm−3, or 0.08640 atoms Å−3. Gaussian functions were fit for the weighted Si–O and Al-O partial pair correlations. (B) The 27Al MAS NMR spectrum exhibits three peaks corresponding to different Al speciation.
