Ca2Nb2O7 cF88 227, Chalcogen, Transitional, Optical properties

• Mo-O-Sm
• Gd-Mo-O
• Bi-Nb-O-Zn
• Gd-O-Ti
• Er-O-Ti
• phonons
• Raman spectra
• optical spectra
• wavenumber of optical phonon
• reflectivity
• transitional
• chalcogen
• pyrochlore
• rare earth
• oxide
• cubic