Ionic mobility and conductivity in PbSnF4 doped with CaF2 from the NMR and impedance spectroscopy data

The ionic mobility and conductivity in the crystalline phases of PbSnF 4– x CaF 2 systems ( x = 2.5 mol.%, 5 mol.%, 7.5 mol.%, and 10 mol.%) in the temperature range of 150-500 K are studied by NMR and impedance spectroscopy. The parameters of 19 F NMR spectra, types of ion motions, and ionic conduc...

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Bibliographic Details
Published in:Journal of structural chemistry 2016-03, Vol.57 (2), p.330-337
Main Authors: Kavun, V. Ya, Uvarov, N. F., Telin, I. A., Polyantsev, M. M., Podgorbunskii, A. B., Brovkina, O. V., Goncharuk, B. K.
Format: Article
Language:English
Subjects:
Atomic
Atomic/Molecular Structure and Spectra
Chemistry
Chemistry and Materials Science
Inorganic Chemistry
Molecular
Optical and Plasma Physics
Physical Chemistry
Solid State Physics
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Summary:The ionic mobility and conductivity in the crystalline phases of PbSnF 4– x CaF 2 systems ( x = 2.5 mol.%, 5 mol.%, 7.5 mol.%, and 10 mol.%) in the temperature range of 150-500 K are studied by NMR and impedance spectroscopy. The parameters of 19 F NMR spectra, types of ion motions, and ionic conductivity in the PbSnF 4 compound doped with calcium fluoride are found to be determined by the temperature and concentration of calcium fluoride. The specific conductivity of the crystalline phases in the PbSnF 4 –CaF 2 systems is rather high at room temperature, and hence, one cannot exclude the possibility to use them for the creation of functional materials with a high ionic (superionic) conductivity.
ISSN:0022-4766
1573-8779
DOI:10.1134/S002247661602013X