Peculiarities of ion mobility, phase transitions, and ionic conductivity in mixed-cation tetrafluoroantimonates(iii)

• Published in: Russian chemical bulletin Vol. 73; no. 3; pp. 465 - 487
• Main Authors: Kavun, V. Ya, Uvarov, N. F., Slobodyuk, A. B., Polyantsev, M. M., Zemnukhova, L. A.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-03-2024; Springer Nature B.V
• Subjects: Alkali metals; Cations; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Inorganic Chemistry; Ion currents; Ionic mobility; Organic Chemistry; Phase transitions; Reviews; impedance spectroscopy; conductivity; ion mobility; ); phase transitions; tetrafluoroantimonates; NMR spectra
• ISSN: 1066-5285; 1573-9171
• DOI: 10.1007/s11172-024-4156-3

The results of previously published studies of the ion mobility, phase transitions, and electrophysical properties of tetrafluoroantimonates(
iii
) with heteroatomic cation sublattices composed of alkali metal and ammonium cations are analyzed, corrected, supplemented, and summarized. The influence of outer-sphere monovalent cations of different nature on the character of ion mobility, phase transitions, and conductivity in crystalline tetrafluoroantimonates(
iii
) is considered. It was found that phase transitions of most compounds in question are followed by the formation of superionic β-phases with a high conductivity of the order of 10
−4
–10
−2
S cm
−1
in the temperature range of 400–500 K.