Accession Number : AD0622322

Title :   RESISTIVITIES AND TRANSFORMATION RATES OF HIGH-PRESSURE INSB-BETA SN ALLOYS,

Corporate Author : MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s) : Banus,M. D. ; Farrell,Lynne B. ; Strauss,A. J.

Report Date : 23 OCT 1964

Pagination or Media Count : 3

Abstract : At atmospheric pressure, alloys of high-pressure InSb sub pi and beta Sn are retained indefinitely as metastable phases at 77K but are transformed into stable two-phase mixtures of low-pressure InSb sub pi and Sn at sufficiently high temperatures. The resistivity of these alloys at 77K has been measured as a function of composition, and the temperature and time dependence of resistivity up to 300K has been determined for samples containing up to 60 at.% Sn. The data show that at any temperature the rate of transformation decreases monotonically with increasing Sn content, and, therefore, that solid solutions of InSb sub pi and Sn are formed up to at least 60 at.% Sn. The data are thus consistent with complete solid solution in the InSb sub piSn system, as previously concluded on the basis of superconductivity data. (Author)

Descriptors :   (*ALLOYS, SOLID STATE PHYSICS), (*INDIUM ALLOYS, TIN ALLOYS), CRYOGENICS, ANTIMONY ALLOYS, ELECTRICAL RESISTANCE, TRANSFORMATIONS, TEMPERATURE, TIME, SOLID SOLUTIONS, HIGH PRESSURE

Distribution Statement : APPROVED FOR PUBLIC RELEASE