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Solid State Ionics, Vol.191, No.1, 68-72, 2011
Synthesis and electrical conductivity of various melilite-type electrolytes Ln(1+x)Sr(1-x)Ga(3)O(7+x/2)
Melilite type ceramics ABC(3)O(7) such as La1.54Sr0.46Ga3O7.27 are a new class of oxide conductors where the conductivity is carried out through interstitial oxygen ions. This work presents the attempt to replace the A-site element La with the other lanthanide elements and Y, resulting in various Ln(1+x)Sr(1-x)Ga(3)O(7+x/2) ceramics, in which Ln = La, Pr, Nd, Sm, Eu, Gd, Dy, Yb, Y, and 0.1