2019
DOI: 10.1016/j.gca.2019.02.018
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The degree of polymerization and structural disorder in (Mg,Fe)SiO3 glasses and melts: Insights from high-resolution 29Si and 17O solid-state NMR

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Cited by 17 publications
(24 citation statements)
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“…Nuclei that are chemically bound, or in the first coordination shell of paramagnetic iron cannot be observed due to extreme paramagnetic broadening. However, above this cutoff radius, nuclear spins become observable despite considerable paramagnetic broadening [69].…”
Section: Chemical Characterization Of Fe@sio 2 (R) Materialsmentioning
confidence: 99%
“…Nuclei that are chemically bound, or in the first coordination shell of paramagnetic iron cannot be observed due to extreme paramagnetic broadening. However, above this cutoff radius, nuclear spins become observable despite considerable paramagnetic broadening [69].…”
Section: Chemical Characterization Of Fe@sio 2 (R) Materialsmentioning
confidence: 99%
“…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] . While each nucleus provides specific information on its local chemical and geometric environment, 17 O NMR spectra provide insight into the various possible environments in oxide glasses.…”
Section: Introductionmentioning
confidence: 99%
“…57,[66][67][68][69] This information allows us to establish the relation between the bulk glass composition and the degree of structural disorder in oxide glasses also with paramagnetic metal-bearing glasses. [70][71][72] These advances, particularly with 17 O magic-angle spinning (MAS) and triple-quantum MAS (3QMAS) NMR, open a window to observe atomic-scale disorder among non-framework cations in mixed-cation silicate glasses (e.g., Na-Ca, 73 Na-Ba, 74 Na-Mg, 75 and Na-Li 76 silicate glasses, see Ref 76 and references therein). NMR parameters of 17 O, such as isotropic chemical shifts (δ iso ) and quadrupolar coupling constant (C q ), have been related with Si-O bond lengths and Si-O-Si bond angles, thereby unveiling the topological evolution of the glass network (e.g., 64,67,[77][78][79][80].…”
Section: Introductionmentioning
confidence: 99%
“…8,54‐65 and references therein) with varying compositions, temperatures, and pressures 57,66‐69 . This information allows us to establish the relation between the bulk glass composition and the degree of structural disorder in oxide glasses also with paramagnetic metal‐bearing glasses 70‐72 . These advances, particularly with 17 O magic‐angle spinning (MAS) and triple‐quantum MAS (3QMAS) NMR, open a window to observe atomic‐scale disorder among non‐framework cations in mixed‐cation silicate glasses (e.g., Na‐Ca, 73 Na‐Ba, 74 Na‐Mg, 75 and Na‐Li 76 silicate glasses, see Ref 76 and references therein).…”
Section: Introductionmentioning
confidence: 99%