Award Date

December 2023

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Physics and Astronomy

First Committee Member

Ashkan Salamat

Second Committee Member

Dean Smith

Third Committee Member

David Shelton

Fourth Committee Member

Eunja Kim

Number of Pages

93

Abstract

The theoretical predictions and results from the (La,Y)Hx ternary hydride solution provided evidence toward phase stability at comparatively lower pressures, as consequence the (Yb,Lu)Hx and (Tm,Lu)Hx ternary hydrides are studied here with pressures up to 25 GPa in the diamond anvil cell. The onset of an unknown feature in the XRD pattern coincides with crystallographic plane distortions in the tetragonal lattice of ytterbium hydride at their laser-heated interface, possibly driven by a solid solution of Lu-Yb. Findings in collected Raman spectra and X-ray diffraction patterns in an Ar environment suggest potential stability of the FCC and high-temperature HCP phases of Yb in the Yb-Lu solid solution as well. However, experimental results also reveal that, within the explored pressure range, no new structures or evidence of phase stability is observed for the Tm-Lu combination in either Ar or H2 atmospheres. The findings in this thesis contribute to understanding the complex behavior of similar ternary hydride solid solutions.

Controlled Subject

Hydrides; Solutions, Solid

Disciplines

Condensed Matter Physics | Optics | Physics

File Format

pdf

File Size

19060 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

Rights

IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

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