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EFFECT OF PLASTIC DEFORMATION ON THE THERMAL CONDUCTIVITY OF BISMUTH-THALLIUM AND BISMUTH-LEAD SYSTEMS BETWEEN 1.5 AND 300 K.

Author(s) : SUBRAMANIAM C. K., CHAUDHURI K. D.

Type of article: Article

Summary

MEASUREMENTS OF THE THERMAL CONDUCTIVITY OF SUPERCONDUCTING SPECIMENS OF BISMUTH-THALLIUM AND BISMUTH-LEAD WERE MADE FROM 1.5 TO 300 K AND THE EFFECT OF PLASTIC DEFORMATION WAS STUDIED. THE DATA SHOW THAT THE HEAT CARRIERS OVER A CONSIDERABLE RANGE OF TEMPERATURE ARE ESSENTIALLY PHONONS BUT THAT ELECTRONIC CONTRIBUTIONS ARE SIGNIFICANT AT LOW TEMPERATURES, IN THE NORMAL AND SUPERCONDUCTING STATES. AT HIGHER TEMPERATURES THE ELECTRONIC CONTRIBUTIONS CAN BE SIGNIFICANT BECAUSE OF THERMAL EXCITATIONS ACROSS A BAND GAP. PLASTIC DEFORMATION GREATLY AFFECTED THE THERMAL CONDUCTIVITIES OF THE TWO SYSTEMS.

Details

  • Original title: EFFECT OF PLASTIC DEFORMATION ON THE THERMAL CONDUCTIVITY OF BISMUTH-THALLIUM AND BISMUTH-LEAD SYSTEMS BETWEEN 1.5 AND 300 K.
  • Record ID : 1987-1252
  • Languages: English
  • Source: Cryogenics - vol. 26 - n. 11
  • Publication date: 1986

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