Accession Number : AD0679613

Title :   MOSSBAUER EFFECT IN THE STUDY OF SOLIDS.

Descriptive Note : Final rept.,

Corporate Author : WESLEYAN UNIV MIDDLETOWN CONN

Personal Author(s) : Trousdale,William L.

Report Date : 15 NOV 1968

Pagination or Media Count : 7

Abstract : Experiments on the spatial dependence of the interaction giving rise to magnetic ordering in metals have been carried out. Most attention has been paid to the Fe-Pd system. The principal method involves interpreting hyperfine field distribution measurements in terms of the exchange interaction and statistical fluctuations in the density of the magnetic atoms. For FePd a picture consistent with NMR experiments, bulk magnetization and neutron diffraction has been obtained. The method is being applied to other dilute alloy systems. Experiments involving the transport of entropy in superconductors by the motion of a normal region created by a moving magnet have been carried out. Entropy transport due to fluxoid motion in type II superconductors has been observed and in type I superconductors entropy transport associated with thermal gradients set up by the superconducting-normal transition has been observed. (Author)

Descriptors :   (*MOSSBAUER EFFECT, SOLIDS), (*SUPERCONDUCTORS, HEAT TRANSFER), (*MAGNETIC ALLOYS, MAGNETIC PROPERTIES), IRON ALLOYS, PALLADIUM ALLOYS, NUCLEAR MAGNETIC RESONANCE, ENTROPY, IMPURITIES

Subject Categories : Metallurgy and Metallography
      Electricity and Magnetism
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE