Advanced solid-state NMR characterization of glass-ceramic-nanocomposites: quantification of nanocrystalline phases and residual glass in the Li2ONb2O- SiO2 system - Bradtmüller, Henrik; Zheng, Qiuju; Gaddam, Anuraag; Eckert, Hellmut; Zanotto, Edgar Dutra (Brazil MRS Meeting, 2023)