Accession Number : AD0850523

Title :   Pade Estimates of the Critical Temperature for the Europium Chalcogenide EuS,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Libelo, Louis F.

Report Date : 11 FEB 1969

Pagination or Media Count : 19

Abstract : A high temperature expansion for the magnetic susceptibility has been derived using the self-consistent cluster-variation method and assuming the Heisenberg model. In this calculation two-spin correlation is included as well as exchange out to second neighbors. Pade approximants to the Curie temperature are obtained explicitly for EuS from this expansion. The results are shown to be considerably better than the values predicted by molecular field theory and very close to those of the precise high temperature expansion technique. (Author)

Descriptors :   (*EUROPIUM COMPOUNDS, MAGNETIC PROPERTIES), TRANSITION TEMPERATURE, PERMEABILITY(MAGNETIC), MAGNETIC MOMENTS, CRYOGENICS, SULFIDES.

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE