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Browsing by Subject "Nuclear Magnetic Resonance (NMR)"

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Atomic-scale measurement of ultraslow Li motions in glassy LiAlSi2 O6 by two-time L6 i spin-alignment echo NMR correlation spectroscopy

Wilkening, Martin; Kuhn, Alexander; Heitjans, Paul (College Park, ML : American Physical Society, 2008)

6Li spin-alignment echo (SAE) nuclear-magnetic-resonance (NMR) spectroscopy is used to monitor single-particle two-time correlation functions in LiAlSi2O6 glass. The method, here applied in the temperature range from 300 ...
Ion hopping in crystalline and glassy spodumene LiAlSi2O6: Li7 spin-lattice relaxation and Li7 echo NMR spectroscopy

Qi, F.; Rier, C.; Böhmer, R.; Franke, W.; Heitjans, Paul (College Park, ML : American Physical Society, 2005)

Nuclear magnetic resonance spectroscopy was used to study polycrystalline β-spodumene (β−LiAlSi2O6) as well as glassy specimens with the same chemical composition. 7Li spin-lattice relaxation measurements were carried out ...
Li jump process in h- Li0.7 Ti S2 studied by two-time Li7 spin-alignment echo NMR and comparison with results on two-dimensional diffusion from nuclear magnetic relaxation

Wilkening, Martin; Heitjans, Paul (College Park, ML : American Physical Society, 2008)

7Li spin-alignment NMR is used to trace ultraslow diffusion of Li+ in the layered Li conductor LixTiS2 (x=0.7). Two-time correlation functions were recorded for fixed evolution times as a function of mixing time at ...
Lithium motion in the anode material LiC6 as seen via time-domain 7Li NMR

Langer, J.; Epp, Viktor; Heitjans, Paul; Mautner, F.A.; Wilkening, Martin (College Park, ML : American Physical Society, 2013)

Since the commercialization of rechargeable lithium-ion energy storage systems in the early 1990s, graphite intercalation compounds (GICs) have served as the number one negative electrode material in most of today's ...
Local electronic structure in a LiAl O2 single crystal studied with Li7 NMR spectroscopy and comparison with quantum chemical calculations

Indris, Sylvio; Heitjans, Paul; Uecker, Reinhard; Bredow, Thomas (College Park, ML : American Physical Society, 2006)

The local electronic structure of a γ−LiAlO2 single crystal was investigated with 7Li nuclear magnetic resonance measurements. We observed different sets of spectra which originate from the four crystallographically ...
Local electronic structure in MgB2 from 12B β-NMR

Indris, Sylvio; Heitjans, Paul; Hattendorf, J.; Zeitz, W.-D.; Bredow, Thomas (College Park, ML : American Physical Society, 2007)

We performed β-NMR spectroscopic studies on 12B which was implanted into MgB2 to get insight into the local electronic structure of this high-temperature superconducting material. By measuring electric field gradients we ...
Longitudinal spin relaxation in simple stochastic models for disordered systems

Borgs, P.; Kehr, K.W.; Heitjans, Paul (College Park, ML : American Physical Society, 1995)

The relaxation of single probe spins was investigated for simple models of systems with quenched disorder. The spin relaxation was calculated for a two-site model with arbitrarily oriented magnetic fields and the result ...

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Browsing by Subject "Nuclear Magnetic Resonance (NMR)"

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