Vibrational Raman and Optical Studies of Cm in Zirconia-Based Pyrochlores andRelated Oxides Matrices

摘要

Raman spectroscopy has been employed to follow the phase behavior of Cm-Zr oxidematerials as a function of Cm:Zr ratio. Three different structural phases, monoclinic, cubic and pyrochlore, are formed when the Cm:Zr ratio is varied from 0 to 1. Each phase produces a distinct Raman profile in the 100-700 cm(sup -1) spectral region. Up to 10 atom % Cm, the Raman spectra indicate that the monoclinic structure is dominant. Raman bands corresponding to the monoclinic