Accession Number:

AD0618004

Title:

A STUDY OF ELECTRICAL AND THERMAL RESISTIVITIES OF FE, CO AND NI USING A TWO-BAND MODEL,

Descriptive Note:

Corporate Author:

PITTSBURGH UNIV PA

Personal Author(s):

Report Date:

1964-01-01

Pagination or Media Count:

3.0

Abstract:

A description is given of recent calculations of the contributions to the electrical resistivity rho and the thermal resistivity W of Fe, Co and Ni due to spin disorder scattering, i.e. the scattering of conduction electrons by spin waves occurring through the s-d exchange interaction. The single-band theory of Kasuya and others has been extended to a model consisting of two spherical energy bands, representing the 4s-4p conduction band and the itinerant d electrons in these metals. At the lowest temperatures the electrons are mainly scattered within each band, but at higher temperatures scattering involving s-d transitions becomes important and gives contributions to rho and W about an order of magnitude larger than the single-band contributions. The approximations of the model are discussed in some detail, and estimates of certain parameters of the model are obtained by comparing the calculations with the experimental results of White and Woods. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE