Accession Number : AD0686756

Title :   ANISOTROPIC RELAXATION TIMES AND THE HALL COEFFICIENTS OF ALPHA-PHASE ALLOYS OF THE IB METALS,

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

Personal Author(s) : Barnard,R. D. ; Alderson,J. E. A. ; Farrell,T. ; Hurd,C. M.

Report Date : 16 AUG 1968

Pagination or Media Count : 9

Abstract : The Hall coefficient (RH) of polycrystalline, alpha-phase alloys of the IB metals has been determined in the range 10-300K. RH shows a dependence upon temperature and solute concentration which might be regarded as very unexpected in a system of monovalent constituents with similar electronic structures. However, it is shown that the data can be interpreted semiempirically in terms of a two-band model which includes different anisotropies of the relaxation times associated with impurity and phonon scattering. Estimates of these anisotropies are obtained for each system and are shown to be in relatively good agreement with those obtained from a similar analysis of deviations from Matthiessen's rule. (Author)

Descriptors :   (*ALLOYS, HALL EFFECT), COPPER ALLOYS, SILVER ALLOYS, GOLD ALLOYS, RELAXATION TIME, TEMPERATURE, BAND THEORY OF SOLIDS

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE