Date of Award


Document Type

Dissertation - Restricted

Degree Name

Doctor of Philosophy (PhD)


Mechanical Engineering

First Advisor

Robert F. Brebrick

Second Advisor

Robert N. Blumenthal

Third Advisor

Jeffrey L. Hock

Fourth Advisor

Martin A. Seitz

Fifth Advisor

Walter M. Hirthe


It has long been recognized that the ternary solid solution system Hg1-xCdxTe(s) is the most important infrared detector material for military and industrial applications. Due to its high values, the mercury pressure over the system plays an important role in both single crystal growth and post-growth annealing processes to obtain a desired composition and required electronic properties. On the other hand, a knowledge of the equilibrium phase relationships that govern the crystal growth is also essential. The partial pressures of the three predominant vapor species over the system, Hg, Cd, and Te2, have been measured for various x-values along the pseudobinary solid solution and for some melt compositions. However the data did not extend over a wide enough composition range to uniquely characterize the entire system in a thermodynamic sense. This investigation sought to extend the previous efforts and to establish some of the equilibrium thermodynamic data in this mercury-cadmium-tellurium system.



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