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
https://doi.org/10.32523/ejpfm.2023070203
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
Keywords
Supporting agencies: The work was supported by grant AP14871881 of the Ministry of Science and Higher and Secondary Education of the Republic of Kazakhstan.
About the Authors
A.S. Nogai
S. Seifullin Kazakh Agrotechnical Research University
Kazakhstan
Kazakhstan
Astana
A.A. Nogai
S. Seifullin Kazakh Agrotechnical Research University
Kazakhstan
Kazakhstan
Astana
E.A. Nogai
S. Seifullin Kazakh Agrotechnical Research University
Kazakhstan
Kazakhstan
Astana
A.A. Bush
Russian Technological University MIREA
Russian Federation
Russian Federation
Moscow
D.E. Uskenbaev
S. Seifullin Kazakh Agrotechnical Research University
Kazakhstan
Kazakhstan
Astana
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Review
For citations:
Nogai A., Nogai A., Nogai E., Bush A., Uskenbaev D. 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. 2023;7(2):107-114. https://doi.org/10.32523/ejpfm.2023070203
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