Conductivity measurements were performed, at temperatures of up to 250C, on the pure compound. It was found that it was an anionic conductor, and the conductivity was described by:

σ (S/cm) = 2.4 x 10-8 exp[-0.08(eV)/kT]

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