Abstract
39K quadrupole perturbed nuclear magnetic resonance spectra show that in KLiSO4 atT c =743 K a phase transition from a room temperature hexagonal to a high temperature orthorhombic phase takes place. The high temperature phase is definitely not incommensurately modulated. The huge shortening of the39K spin-lattice relaxation time on approachingT c from below demonstrates that KLiSO4 becomes a superionic conductor above 743 K. The self-diffusion coefficient of the Li-ions is estimated asD=10−6 cm2/s at 780 K.
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Topic, B., Haeberlen, U. & Blinc, R. 39K quadrupole coupling and spin-lattice relaxation in the high temperature phases in KLiSO4 . Z. Physik B - Condensed Matter 79, 275–278 (1990). https://doi.org/10.1007/BF01406595
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DOI: https://doi.org/10.1007/BF01406595