Surfaces of Intermetallics: Quasicrystals and Beyond

Date
2012-01-01
Authors
Yuen, Chad
Major Professor
Advisor
Patricia A. Thiel
Committee Member
Journal Title
Journal ISSN
Volume Title
Publisher
Altmetrics
Authors
Research Projects
Organizational Units
Chemistry
Organizational Unit
Journal Issue
Series
Department
Chemistry
Abstract

The goal of this work is to characterize surfaces of intermetallics, including quasicrystals. We can determine the surface composition and surface structure of these materials by using X-ray photoelectron spectroscopy (XPS) and scanning tunneling microscopy (STM) under ultrahigh vacuum conditions. We apply these techniques generally on clean surfaces, but in some cases, we can also apply these techniques after an adsorption of a molecule or a metal on surfaces as well. In this dissertation, five chapters focus on characterizing clean surfaces and other types of systems on surfaces. They are (1) Weak bonding of Zn in an Al-Based approximant, based on surface measurements; (2) Structure of the clean Gd5Ge4 (010) surface; (3) Preferential surface oxidation of Gd in Gd5Ge4; (4) The interaction of Au on the binary NiAl (110) surface; and (5) A comparison of the Ag and Au structures on NiAl (110) using XPD and STM.

Comments
Description
Keywords
Citation
Source