Solid solutions in this system were examined, and the electrical conductivity was measured as a function of temperature and composition. It was found that the room-temperature conductivity increased from 0.32S/cm for an x-value of zero, to 0.47S/cm for an x-value of 0.40.

R.Kanno, Y.Takeda, T.Kanekura, O.Yamamoto: Materials Research Bulletin, 1984, 19[8], 999-1004