High-Temperature Magic-Angle Spin Nuclear Magnetic Resonance Reveals Sodium Ion-Doped Crystal-Phase Formation in FLiNaK Eutectic Salt Solidification

2021 ◽  
Vol 125 (8) ◽  
pp. 4704-4709
Author(s):  
Yiyang Liu ◽  
Rongshan Lan ◽  
Changwu Dong ◽  
Kun Wang ◽  
Xiaobin Fu ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
High Temperature ◽  
Magnetic Resonance ◽  
Phase Formation ◽  
Magic Angle Spin ◽  
Sodium Ion ◽  
Crystal Phase ◽  
Magic Angle ◽  
Eutectic Salt ◽  
Nuclear Magnetic

Nuclear magnetic resonance (NMR) studies of sintering effects on the lithium ion dynamics in Li1.5Al0.5Ti1.5(PO4)3

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Edda Winter ◽  
Philipp Seipel ◽  
Tatiana Zinkevich ◽  
Sylvio Indris ◽  
Bambar Davaasuren ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Lithium Ion ◽  
Magic Angle Spinning ◽  
Spin Lattice Relaxation ◽  
Magic Angle ◽  
Nmr Studies ◽  
Lithium Ions ◽  
Jump Dynamics ◽  
Nuclear Magnetic

Abstract Various nuclear magnetic resonance (NMR) methods are combined to study the structure and dynamics of Li1.5Al0.5Ti1.5(PO4)3 (LATP) samples, which were obtained from sintering at various temperatures between 650 and 900 °C. 6Li, 27Al, and 31P magic angle spinning (MAS) NMR spectra show that LATP crystallites are better defined for higher calcination temperatures. Analysis of 7Li spin-lattice relaxation and line-shape changes indicates the existence of two species of lithium ions with clearly distinguishable jump dynamics, which can be attributed to crystalline and amorphous sample regions, respectively. An increase of the sintering temperature leads to higher fractions of the fast lithium species with respect to the slow one, but hardly affects the jump dynamics in either of the phases. Specifically, the fast and slow lithium ions show jumps in the nanoseconds regime near 300 and 700 K, respectively. The activation energy of the hopping motion in the LATP crystallites amounts to ca. 0.26 eV. 7Li field-gradient diffusometry reveals that the long-range ion migration is limited by the sample regions featuring slow transport. The high spatial resolution available from the high static field gradients of our setup allows the observation of the lithium ion diffusion inside the small (<100 nm) LATP crystallites, yielding a high self-diffusion coefficient of D = 2 × 10−12 m2/s at room temperature.

Solvation of the Sodium Ion. Quadrupolar Broadening of the 23Na Nuclear Magnetic Resonance

1972 ◽  
Vol 50 (24) ◽  
pp. 3935-3937 ◽  
Author(s):  
R. D. Green ◽  
John S. Martin
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Sodium Ion ◽  
Solvent Mixtures ◽  
Nuclear Magnetic

Sodium ion preferentially forms long lived complexes with dimethylsulfoxide or N,N-dimethylformamide, in mixtures of either of these solvents with either ethanenitrile or propanone. No long lived complexes are observed in solvent mixtures of water or methanol with ethanenitrile or propanone.

Trifluoroethanol and19F Magic Angle Spinning Nuclear Magnetic Resonance as a Basic Surface Hydroxyl Reactivity Probe for Zirconium(IV) Hydroxide Structures

Langmuir ◽  
2011 ◽  
Vol 27 (15) ◽  
pp. 9458-9464 ◽  
Author(s):  
Jared B. DeCoste ◽  
T. Grant Glover ◽  
Gregory Mogilevsky ◽  
Gregory W. Peterson ◽  
George W. Wagner
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Surface Hydroxyl ◽  
Angle Spinning ◽  
Nuclear Magnetic

Anisotropics-wave gap and nuclear magnetic resonance in high-temperature superconductors

1994 ◽  
Vol 49 (17) ◽  
pp. 12245-12254 ◽  
Author(s):  
Asle Sudbo/ ◽  
Sudip Chakravarty ◽  
Steven Strong ◽  
Philip W. Anderson
Keyword(s):  
Nuclear Magnetic Resonance ◽  
High Temperature ◽  
Magnetic Resonance ◽  
High Temperature Superconductors ◽  
Nuclear Magnetic
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