Thermally activated mobility of lithium ions in Li1-xCuSbO4 as studied by 7Li NMR

The Li diffusion in Li1-xCuSbO4 with lithium deficiency x = 0.02, 0.05, 0.07 and 0.1 was studied by investigation of motional narrowing of the central 7 NMR line in the temperature range from 290 K to 470 K. The activation energy of hopping of lithium ions was determined from the temperature depende...

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Published inMagnetic resonance in solids Vol. 21; no. 6
Main Authors Gafurov, D, M.-I. Sturza, Vavilova, E
Format Journal Article
LanguageEnglish
Published Kazan Kazanskii (Privolzhskii) Federalnyi Universitet / Kazan (Volga Region) Federal University 01.01.2019
Subjects
Activation energy
Lithium
Lithium ions
Lithium isotopes
NMR
Nuclear magnetic resonance
Temperature dependence
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Summary:The Li diffusion in Li1-xCuSbO4 with lithium deficiency x = 0.02, 0.05, 0.07 and 0.1 was studied by investigation of motional narrowing of the central 7 NMR line in the temperature range from 290 K to 470 K. The activation energy of hopping of lithium ions was determined from the temperature dependence of the NMR linewidth. The dependence of the obtained activation energy on the lithium content indicates the opening of motion channels in the crystals at x close to 0.1 due to the formation of free vacancies at the lithium position, which favors the thermally activated hopping of ions.
ISSN:2072-5981
DOI:10.26907/mrsej-19602