NMR Spectroscopy in Glass Science: A Review of the Elements

Abstract

The study of inorganic glass structure is critically important for basic glass science and especially the commercial development of glasses for a variety of technological uses. One of the best means by which to achieve this understanding is through application of solid-state nuclear magnetic resonance (NMR) spectroscopy, which has a long and interesting history. This technique is element specific, but highly complex, and thus, one of the many inquiries made by non-NMR specialists working in glass science is what type of information and which elements can be studied by this method. This review presents a summary of the different elements that are amenable to the study of glasses by NMR spectroscopy and provides examples of the type of atomic level structural information that can be achieved. It serves to inform the non-specialist working in glass science and technology about some of the benefits and challenges involved in the study of inorganic glass structure using modern, readily-available NMR methods.

Impact of magnesium on the structure of aluminoborosilicate glasses: A solid‐state NMR and Raman spectroscopy study

“…Solid-state nuclear magnetic resonance (NMR) spectroscopy has proven to be a useful and effective tool for probing the local environment of atoms in glasses, providing insights into the intricacies of silicate oxide glassy systems [28][29][30][31][32][33][34][35][36] . The network connectivity (Q ), non-bridging oxygens (NBO), and coordination number (CN) can be precisely evaluated by investigating every NMR-active nucleus found in these glass systems, typically 27 Al, 11 B, 29 Si, 23 Na, 25 Mg, 43 Ca and 17 O 10, [37][38][39][40][41] .…”

Electrochemical and Thermal Behavior of Modified Li and Mn‐Rich Cathode Materials in Battery Prototypes: Impact of Pentasodium Aluminate Coating and Comprehensive Understanding of Its Evolution upon Cycling through Solid‐State Nuclear Magnetic Resonance Analysis

“…The uncycled electrode material (Figure 8a) exhibits a narrow (≈1.3 kHz full width at half maximum [FWHM]) peak at −13 ppm with a spinning sideband manifold spanning about 70 kHz, which sits on top of a broad (≈19 kHz FWHM) peak centered at ≈100 ppm. The shift and linewidth of the narrow signal indicate that it corresponds to Na‐O‐Al species [ 60–62 ] in the form of crystalline sodium aluminate showing a typical quadrupolar coupling constant (qcc) of ≈1–4 MHz. [ 63 ] It is associated with the Na 5 AlO 4 phase, identified previously via TEM and electron diffraction studies.…”

Defect structure and property consequence when small Li+ ions meet BaTiO3

“…This makes us believe that the signal of site B might arise from the unreacted Li raw materials. The absence of exchange between the disordered site A and the ordered sites C and D may imply that the Li disorder at site A results from a breakdown of the host lattice due to its over-accumulation, leading to a distinct glassy phase (variable bonding environment comparable with Li-containing glasses [35]). Bearing this in mind, we conducted the electron microprobe as well as the WDS measurements on the Li-doped BaTiO 3 sample (Part III in Supplemental Material [31]).…”