| The dual partial phonon density of states (DOS) from two different Mossbauer isotopes (161Dy and 57Fe) in the same material (dyfe3) was successfully measured using the nuclear resonant inelastic x-ray scattering (NRIXS) technique at high pressure. Nuclear inelastic scattering measurements yield an in-depth understanding of the element-specific dynamic properties. The Debye temperatures (thetaD), the Lamb-Mossbauer factor (fLM), and the vibrational contributions to the Helmholtz free energy (Fvib ), specific heat (cV), entropy (Svib) and internal energy (Uvib ) are calculated directly from the phonon density of states. |
