CHARACTERIZATION OF BORATE GLASSES USING SOLID-STATE NUTATION NMR

In the present study, solid-state nutation NMR is performed to investi gate the local structures in berate glasses. B-11 NMR powder patterns produce two significant responses with different Values of Q(cc) arisi ng from the two major boron sites. Changes in N-4, the fraction of bor on atoms in BO4 units, are observed and compared with the previously r eported data. The results show that solid-state nutation NMR is a prom ising and potentially useful characterization method for determining t he structures of many interesting materials in which several sites con tain overlapping static NMR powder patterns with different Q(cc) value s.