Structural and Raman Vibrational Studies ofCeO₂-Bi₂O₃ Oxide System

Figure 2

Raman spectra (𝜆=514.5nm) of bismuth cerium oxide phases, (1−𝑥) CeO₂, 𝑥/2. Bi₂O₃; (a) solid solution for 𝑥=0 to 0.25; (b) multiphase system for 𝑥=0.30 to 1. Raman shift island are in cm⁻¹, 𝑥 values from 0 to 1. The bands at 520 and 590 cm⁻¹ are linked to structural defects.

(a)

(b)