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Katiyar, Optical properties
Fe-Nb-O-Pb
O-Zn
Co-O-Zn
O-Sn-Sr
Be-Mg-O-Zn
phonons
wavenumber of optical phonon
Raman spectra
optical absorption
optical conductivity
chalcogen
transitional
oxide
disordered
ferroelectric
hexagonal
tetragonal
cubic
trigonal
orthorhombic