Accession Number:

AD0681284

Title:

HALL COEFFICIENTS OF CU, AG, AND AU IN THE RANGE 4.2-300 DEGREES K,

Descriptive Note:

Corporate Author:

NATIONAL RESEARCH COUNCIL OF CANADA OTTAWA (ONTARIO) DIV OF APPLIED CHEMISTRY

Report Date:

1968-05-03

Pagination or Media Count:

9.0

Abstract:

The Hall coefficient R of high-purity polycrystalline group-IB metals and some single-crystal Cu samples has been determined with high precision in the approximate temperature range 4.2-300 degrees K and in a magnetic field of 15 kG. The general temperature dependence of R for each IB metal can be explained for temperatures down to about 50 degrees K in terms of what is known about the electronic relaxation times associated with different electron scattering processes. But at lower temperatures these data show a new behavior The R-versus-temperature curce for each metal shows an apparent maximum centered at about 40 degrees K. Experiments are described which show this is not a sample-size effect, not an effect of trace impurities, but probably a result of a phonon-drag contribution to R. The work has involved similar measurements of some very dilute AgAu, AgZn, and AgCd alloys. Author

Subject Categories:

  • Electricity and Magnetism
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE