Fig. 2: Phonon spectrum for hydrated Y-doped BaZrO3.
From: Cooperative origin of proton pair diffusivity in yttrium substituted barium zirconate

Raman and Fourier transform infrared (FTIR) spectra were recorded at room temperature. Inset: generalized density of states measured by quasi-elastic neutron scattering (QENS) from 600 to 900 K.