THE THERMAL CONDUCTIVITY AND SEEBECK EFFECT OF IMPURE INDIUM ANTIMONIDE IN A MAGNETIC FIELD.
Abstract
A study was made of the thermal conductivity and Seebeck coefficient of a single crystal of InSb containing 3.3(10) to the 18th power tellurium atoms per cubic cm. Measurements were made in the temperature range of 338K to 648K and at magnetic fields between 1000 and 8000 Gauss. The electrical conductivity had a value of 5700/ (Ohm-cm) at 358K. The thermal conductivity, determined by the series comparison method with Inconel 702 as standards, decreased from 0.14 W/cmK at 338K to 0.091 W/cm-K at 648K. The Wiedemann-Franz ratio was used to determine the electronic component of the thermal conductivity from measured values of the electrical conductivity and amounted to 79% of the total thermal conductivity at 613K. The difference between the total thermal conductivity and the electronic component was attributed to conduction by the lattice. The lattice thermal resistance was approximately twice that of pure InSb. The Seebeck coefficient varied from -15 microvolts/K at 338K to -109 microvolts/K at 613K with the low-temperature values being less negative than theoretically predicted. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1964
- Accession Number
- AD0608664
Entities
People
- Eldon F. Ault
Organizations
- South Dakota School of Mines and Technology