Chalcogen, Disordered, Kennedy, Optical properties

• Ba-Nb-O-Pr-Sn
• Ba-Nb-O-Sn-Tb
• C-Mg-O
• Ba-O-Ru-Sr-Y
• Ba-Nb-O-Pr
• optical spectra
• X-ray absorption near-edge spectra
• phonons
• vibrational spectra
• reflectivity
• disordered
• chalcogen
• oxide
• transitional
• alkaline
• cubic
• orthorhombic
• monoclinic
• trigonal
• tetragonal