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Chalcogen, Rare earth, Optical properties
Ba-Cu-O-Y
Cu-La-O-Sr
Cu-La-O
La-Mn-O-Sr
Ce-O
phonons
luminescence
optical spectra
wavenumber of optical phonon
values of luminescence
rare earth
chalcogen
lanthanoid
transitional
nonmetal
orthorhombic
tetragonal
cubic
monoclinic
trigonal