Substitutions Influence on Ionic Conductivity and Phase Transitions of Solid Solutions Na3Sc2(1-x)M2x(PO4)3, where M = Cr, Yb

This article researched the phase transitions and conductive properties of solid solutions Na
₃
Sc
_2(1-x)
M
_2x
(PO
₄
)
₃
, where M = Cr, Yb in the concentration range x = 0 - 0.03. The peculiarities of ionic conductivity in the α- and β-, γ- phases of the studied solid solutions were clarified. The concentration dependences of the phase transition temperatures Tα→β and Tβ→γ of solid solutions of substitution Na
₃
Sc
_2(1-x)
M
_2x
(PO
₄
)
₃
, where M = Sc, Cr have been established.