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Updated: Apr 5, 2026

Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
Motional narrowing under diffusion of two spin sub-lattices in LiNaSO4
R A Shakhovoy1, M Deschamps1, A Rakhmatullin1
1CNRS, CEMHTI UPR 3079, Univ. Orléans, F-45071 Orléans, France.
Abstract:
An expression for the dipolar correlation function characterizing the fluctuations of the Hamiltonian under uncorrelated diffusion of two cationic sub-lattices in a solid has been obtained. A corresponding formula, which can be used for fitting the two-step temperature dependencies of the NMR line width, has been deduced. We also considered the case of a distribution of correlation times and deduced a corresponding analytical fitting function. Elaborated expressions have been applied to the NMR line width analysis of LiNaSO4 in the temperature range 295-788 K.
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