Accession Number : AD0754314

Title :   Static Magnetization Studies on the Family of Compounds Cd(1-x)Fe(x)Cr2S4,

Corporate Author : MANITOBA UNIV WINNIPEG DEPT OF PHYSICS

Personal Author(s) : Spender,M. R. ; Morrish,A. H.

Report Date : 03 JUN 1971

Pagination or Media Count : 13

Abstract : Static magnetization measurements have been made on a number of compounds in the family Cd(1-x)-Fe(x)Cr2S4 for 0<or=x<or=1. The magnetic moments at 0K fall with increasing iron content. The ordering temperatures rise and the Curie-Weiss parameters fall with increasing iron content. There is a steady decrease in lattice parameter with increasing x. A simple model is proposed in which the extra antiparallel electron on the Fe(2+) ion is delocalized. The band in which the electrons move is assumed to have a trap for electrons in the vicinity of the A sites. The trap allows ionic behavior at low temperatures while at higher temperatures the electrons are itinerant. The model allows a consistent understanding of the magnetic properties. (Author)

Descriptors :   (*SULFIDES, MAGNETIC PROPERTIES), IRON COMPOUNDS, CHROMIUM COMPOUNDS, CADMIUM COMPOUNDS, MOSSBAUER EFFECT, MAGNETIC MOMENTS, BAND THEORY OF SOLIDS, CANADA

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE