Conductivity measurements were performed, at temperatures of up to 250C, on the pure compounds and on YbH1.8-YbF2.33 solid solutions. It was found that all of them were anionic conductors. The YbH2.5 exhibited the best performance (table 1). Detailed correlations were established between anionic conduction and the structural characteristics.

J.P.Bastide, A.Bouamrane, J.Carré, P.Claudy, D.Mourksi, J.P.Candy, B.Frit, J.P.Laval: Materials Research Bulletin, 1995, 30[2], 183-91

Table 1

Ionic Conductivity of Yb Fluorides and Hydrides