Abstract
The compositional evolution of the network structure of binary (BaO)x(TeO2)100−x glasses (5≤x≤25) is studied using two-dimensional 125Te isotropic-anisotropic correlation nuclear magnetic resonance (NMR) spectroscopy. It is demonstrated that only a consideration of the full 125Te chemical shift tensor in combination with the composition dependent evolution of isotropic 125Te NMR line shape can yield a consistent structural model of these glasses in terms of the complex tellurium speciation. When taken together, the results indicate that the addition of the modifier BaO results in a progressive depolymerization of the network of corner- and edge-shared TeO4/2 trigonal bipyramids via their replacement with primarily a combination of negatively charged TeO3/2O trigonal bipyramids and TeO1/2O2 trigonal pyramids with one and two non-bridging oxygen, respectively.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
