An overview of solid-state NMR correlation experiments in phosphate glass systems

Methods for high-resolution heteronuclear correlation solid-state nuclear magnetic resonance are presented for the study of structure in phosphate and aluminophosphate glass systems. Combinations of magic-angle spinning, cross-polarization, transferred-echo double resonance, dynamic-angle spinning, and variable-contact-time cross-polarization methods are used as a powerful array of tools for probing local microstructure, especially the next-nearest neighbor coordination sphere, in these systems.