Abstract
Samples of systems (Na 1-x K x )3.8M0.1P2O7 (M = Ca, Sr, Cd; 0 ≤x ≤ 1) are synthesized. It is established that solid solutions with the structure of γ-K4P2O7 form in these systems. At room temperature, the solutions exist atx ≥ 0.7. In the calcium-containing system, they form a continuous series at temperatures exceeding ∼500°C. The co-cation character of conduction of the solutions is confirmed by measured transport numbers. The concentration dependences of the electroconductivity and its activation energy point to a polyalkali effect, which decreases with an increase in the M2+ ion radius. Partial conductivities of sodium and potassium cations in the (Na 1-x K x )3.8Ca0.1P2O7 system are calculated and their dependences on the balance between alkali cations in the solid solution are discussed
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Smirnov, N.B., Burmakin, E.I., Antonov, B.D. et al. Co-cation conduction of the (Na1-x K x )3.8M0.1P2O7 (M = Ca, Sr, Cd) solid solutions. Russ J Electrochem 36, 736–740 (2000). https://doi.org/10.1007/BF02757673
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DOI: https://doi.org/10.1007/BF02757673