Electrical conductivity of the lanthanide higher oxides

As discussed in previous sections the phase relationships in the lanthanide higher oxides of Ce, Pr, and Tb are quite complex and sensitive to environmental conditions, especially the oxygen partial pressures. Unless extreme care is taken, the property measurements will be on inadequately characterized materials. 

FIGURE 40 The conductivity of the a-phase of PrO as a function of the oxygen partial pressure at three different temperatures (after Inaba et al., 1981a, 1981b, 1981c). 

---