Master of Science in Physics
First Committee Member
Lon Spight, Co-Chair
Second Committee Member
Dave Schiferl, Co-Chair
Third Committee Member
Fourth Committee Member
Graduate Faculty Representative
Number of Pages
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 , the Lamb-Mossbauer factor, and the vibrational contributions to the Helmholtz free energy, specific heat , entropy and internal energy are calculated directly from the phonon density of states.
Dysprosium halides; Iron; Isotopic forms of elements; Chemical elements; Properties; Halide minerals; Lattice dynamics
Atomic, Molecular and Optical Physics | Condensed Matter Physics | Physics
Tanis, Elizabeth Anne, "Partial phonon density of states of 57-iron and 161-dysprosium in DyFe3 by nuclear resonant inelastic X-ray scattering under high pressure" (2010). UNLV Theses, Dissertations, Professional Papers, and Capstones. 346.