Monoclinic, Optics, Quaternary, Transitional

• Cr-H-La-O
• Cr-H-O-Pr
• K-Nb-S-Ta
• Cr-H-Nd-O
• F-Hg-Sb-Xe
• phonons
• wavenumber of optical phonon
• luminescence
• Raman spectra
• optical absorption
• transitional
• quaternary
• chalcogen
• non-disordered
• nonmetal