Internal Mobility, Structure, Phase Transitions, and Ionic Conductivity in Thallium Fluoroantimonates(III) TlSb4F13 and TlSb3F10

Author: Kavun V. Ya.   Uvarov N. F.   Udovenko A. A.   Zemnukhova L. A.  

Publisher: Springer Publishing Company

ISSN: 0022-4766

Source: Journal of Structural Chemistry, Vol.44, Iss.4, 2003-07, pp. : 605-612

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Abstract

Internal mobility in TlSb4F13 (I) and TlSb3F10 (II) was studied by 19F NMR spectroscopy in the temperature range 210-450 K. Types of ionic motion in the fluoride subsystem were determined. Phase transitions resulting in modifications with high ionic (superionic) conductivity above 420 K were established for both compounds (385-425 K). Using impedance spectroscopy, we studied the electrophysical properties of I and II in the temperature range 290-425 K (\sigma\sim 1.1 \times 10^{-3} and 1.0\times 10^{-3} S/cm for I and II, respectively; t=425 K).

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