Influence of substitutions on the structure, ionic conductivity, and phase transitions in the system of Na3Fe2(1-x)Sc2x(PO4)3 (0≤x≤0.06) solid solutions
Abstract
The article presents data on the study of the effect of substitutions of M-cations in the system of Na3Fe2(1-x)Sc2x(PO4)3 solid solutions (in the concentration range 0≤x≤0.06) on the crystal structure, ionic conductivity, and also on the temperature of phase transitions Ta→b, Tb→g. It is shown that samples of Na3Fe2(1-x)Sc2x(PO4)3 (0≤x≤0.06) solid solutions are monoclinically distorted, and the structure parameters increase linearly with increasing dopant concentration. Moreover, in the studied samples of solid solutions, an increase in the conductivity of the a -phase and a decrease in the b - and g -phases are observed, as well as a decrease in the temperatures Ta→b and Tb→g. It is concluded that these changes are associated with both local deformations of the anionic part of the crystalline structure, and violation of the regularity of the crystal structure
Recommended Citation
Nogai, A.S.; Nogai, A.A.; Nogai, E.A.; Bush, A.A.; and Uskenbaev, D.E. (2023) "Influence of substitutions on the structure, ionic conductivity, and phase transitions in the system of Na3Fe2(1-x)Sc2x(PO4)3 (0≤x≤0.06) solid solutions," Eurasian Journal of Physics and Functional Materials: Vol. 7: No. 2, Article 3.
DOI: https://doi.org/10.32523/ejpfm.2023070203
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