Biexponential I = 3/2 Spin-Lattice Relaxation in the Solid State: Multiple-Quantum ⁷Li NMR as a Probe of Fast Ion Dynamics.

ABSTRACT: Spin-lattice relaxation measurements are used in ⁷Li NMR studies of materials of potential use in solid-state Li-ion batteries as a probe of ion mobility on a fast (nanosecond to picosecond) time scale. The relaxation behavior is often analyzed by assuming exponential behavior or, equivalently, a single T₁ time constant. However, the spin-lattice relaxation of spin I = 3/2 nuclei, such as ⁷Li, is in general biexponential; this is a fundamental property of I = 3/2 nuclei and unrelated to any compartmentalization within the solid. Although the possibility of biexponential ⁷Li (and other I = 3/2 nuclei) spin-lattice relaxation in the solid state has been noted by a number of authors, it can be difficult to observe unambig

SUBMITTER: Wimperis S 

PROVIDER: S-EPMC11000215 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature