Author

Torsten Will

Date of Award:

12-1990

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Physics

Advisor/Chair:

Dr. John Robert Dennison

Abstract

The development of an infrared instrument for the study of surface adsorption and high Tc superconductors is presented and its applicability is discussed. The use of and theoretical background for the metal light pipe multiple-reflection technique are discussed in comparison to other infrared devices. Measurements are carried out to determine its limitations with powdered substrates as well as its sensitivity limitation for thin films. The results of the two test measurements, adsorption of CO on MgO and investigation of the energy gap of high Tc superconductors, are presented. Comparisons of the spectra with the experimental and theoretical literature are presented where possible. The necessity for simultaneous infrared and vapor pressure isotherm measurements is discussed, and their instrumental realization is shown. Infrared measurements on the energy gap of high Tc superconductors are shown and compared with results form the literature.

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