“…ensures mechanochemical synthesis of mixed oxides. 24,25 Since a number of zirconium-doped rare-earth molybdates, Ln 5.4 Zr 0.6 MoO 12.3 (Ln ¼ Nd, Sm, Dy) and La 5.8 Zr 0.2 MoO 12.1 , were shown to possess oxygen ion and proton conductivity, 10,11 the total conductivity of some polymorphs of undoped Ln 6Àx -MoO 12Àd (Ln ¼ La, Yb; x ¼ 0, 0.5) was also measured in dry and wet air.…”