Study of Transport Properties of Refractory Semiconducting Compounds

摘要

The original scope and objective of the program was a theoretical and experimental study of the transport properties of refractory semiconducting compounds which might offer promise as .ermoelectric generator materials at fairly high temperatures (up to at least 500C). The report, consists of: (1) a detailed treatment of the phenomenological theory of various galvano-thermomagnetic effects in crystalline media (including an extensive compilation of the forms of the various pertinent tensors for the thirty-two crystal classes); (2) a brief and qualitative discussion of the electronic structure of MA sub 2-x B sub x-type compounds (M = transition metal, A and B are similar elements from the same column of the periodic table);(3) a description of the experimental work carried out on this project, including a summary of the room-temperature measurements of thermoelectric power and electrical conductivity for the systems MoSi sub 2-x Ge sub x and CrSi2. (Author)