Electrical Properties of a CeO₂-Bi_𝟐O_𝟑Mix System Elaborated at 600^∘C

Figure 1

Variation of the A₄O₈ unit volume 𝑉_unit versus bismuth fraction 𝑥 (from [1]). (1): for 0≤𝑥≤0.2, Ce₄O₈ unit for the solid solution Ce_(1−x)Bi_xO_(2−δ). (2): for 0.3≤𝑥≤0.7, Bi₄O₆□₂ unit for the tetragonal 𝛽^′ phase. (3) for 0.7<𝑥<0.9, Bi₄O₆□₂ unit for the tetragonal β phase. (4) for 𝑥=0.7 maximum of conduction due to the tetragonal phase. (5) for 𝑥=1, Bi₄O₆□₂ unit for the monoclinic α phase.