H-Y, H-x polyhedra, Metal, Optical properties

• Fe-H-Y
• Ce-H-Ni-Y
• H-La-Ni-Y
• phonons
• Raman spectra
• vibrational spectra
• optical spectra
• wavenumber of longitudinal optical phonon
• transitional
• metal
• rare earth
• hydride
• binary
• trigonal
• cubic
• tetragonal