Accession Number : AD0289056

Title :   EFFECT OF CRYSTALLINE IMPERFECTIONS UPON THE ELECTRICAL PROPERTIES OF SEMICONDUCTING INTERMETALLIC COMPOUNDS

Corporate Author : CORNELL UNIV ITHACA N Y

Personal Author(s) : SPENCER,C.W.

Report Date : 15 OCT 1962

Pagination or Media Count : 1

Abstract : Two new experimental techniques were developed which made it possible to measure electrical properties at elevated temperatures or under high hydrostatic pressures. A device which enables the measurement of conductivity of Hall constant at temperatures above 600 C was successfully developed. Pressure vessels were constructed to measure resistivity under hydrostatic pressures up to 30,000 atoms and temperatures above 100 C. The properties of Bi2Te3 were studied as a function of pressure and alloy composition. For the alloy study, systems of Bi2Te3-Sb2Te3 and Bi2Te3-Bi2Se3 were chosen so that systematic substitution at different layers of the Bi2Te3 structure was obtained. The properties observed show strong correlation with the anisotropic layer structure of this system. (Author)

Descriptors :   *ALLOYS, *INTERMETALLIC COMPOUNDS, *SEMICONDUCTORS, ABSTRACTS, ANTIMONY ALLOYS, BISMUTH ALLOYS, DISSOCIATION, GASES, HALL EFFECT, HIGH TEMPERATURE, HYDROSTATIC PRESSURE, METAL CRYSTALS, SELENIDES, STABILITY, TELLURIDES, THERMOCHEMISTRY, THERMODYNAMICS

Distribution Statement : APPROVED FOR PUBLIC RELEASE