Date of Award
Summer 1971
Document Type
Dissertation - Restricted
Degree Name
Doctor of Philosophy (PhD)
Department
Mechanical Engineering
First Advisor
Cartz, L.
Second Advisor
Hirthe, William
Third Advisor
Stajdohan, Ralph E.
Abstract
Materials which exhibit any abnormal behavior regarding temperature or pressure dependence are of great interest because of the possibility that unexpected properties may develop. Hexagonal selenium possesses an anomalous thermal expansion, and is therefore an interesting candidate for a high pressure diffraction investigation. Large discrepancies exist in the literature regarding its compressibility, and a high pressure structure investigation has not been reported. This investigation is concerned with determining the zero pressure compressibilities of hexagonal selenium, explaining the anomalous axial behavior under pressure, and high pressure phase transformation:,.