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Contribution to the theoretical study of order-disorder phenomena in the electrical properties of alloys (1963); Contribution a l'etude theorique des phenomenes d'ordre dans les proprietes electriques des alliages (1963)

Abstract

We have study theoretically the ordering of alloys and its influence an electrical resistivity. We have looked at the cases of concentrated, non magnetic alloys such as Cu Zn {beta} or Cu{sub 3}Au and of diluted, magnetic alloys such as noble matrix with rare earth impurities. In both cases, a simple method of molecular field with nearest neighbour interactions is used. Scattering cross sections are calculated with free electrons and Born approximation. The electrical properties are described with a good accuracy by single diffusions on each center (long range order). But some anomalies near to the ordering temperature are caused by double diffusions on pairs of interacting atoms or spins (local order). (author) [French] On presente une etude theorique des phenomenes d'ordre et de leur influence sur les proprietes electriques des alliages. Deux cas sont envisages: celui des alliages non magnetiques concentres, tels que Cu Zn {beta} ou Cu{sub 3}Au et celui d'alliages magnetiques tres dilues du type matrice noble impuretes de terres rares. Dans les deux cas on utilise une methode simple de champ moleculaire avec interactions entre plus proches voisins seulement. Les sections efficaces de diffusion sont calculees dans un modele d'electrons libres et dans l'approximation de Born.  More>>
Authors:
Beal, M T [1] 
  1. Commissariat a l'Energie Atomique, Fontenay-aux-Roses (France). Centre d'Etudes Nucleaires
Publication Date:
Jul 01, 1963
Product Type:
Thesis/Dissertation
Report Number:
CEA-R-2304
Resource Relation:
Other Information: TH: These ES-sciences physiques; 96 refs
Subject:
36 MATERIALS SCIENCE; ALLOYS; BORN APPROXIMATION; COUPLING; CRYSTAL LATTICES; ELECTRIC CONDUCTIVITY; KINETICS; MAGNETIC MATERIALS; ORDER-DISORDER TRANSFORMATIONS; SCATTERING; SPIN ORIENTATION; TEMPERATURE DEPENDENCE
OSTI ID:
20808558
Research Organizations:
CEA Fontenay-aux-Roses, 92 (France); Faculte des Sciences de l'Universite de Paris, Centre d'Orsay, 91 (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR06R2304110063
Availability:
Available from INIS in electronic form
Submitting Site:
FRN
Size:
79 pages
Announcement Date:
Dec 23, 2006

Citation Formats

Beal, M T. Contribution to the theoretical study of order-disorder phenomena in the electrical properties of alloys (1963); Contribution a l'etude theorique des phenomenes d'ordre dans les proprietes electriques des alliages (1963). France: N. p., 1963. Web.
Beal, M T. Contribution to the theoretical study of order-disorder phenomena in the electrical properties of alloys (1963); Contribution a l'etude theorique des phenomenes d'ordre dans les proprietes electriques des alliages (1963). France.
Beal, M T. 1963. "Contribution to the theoretical study of order-disorder phenomena in the electrical properties of alloys (1963); Contribution a l'etude theorique des phenomenes d'ordre dans les proprietes electriques des alliages (1963)." France.
@misc{etde_20808558,
title = {Contribution to the theoretical study of order-disorder phenomena in the electrical properties of alloys (1963); Contribution a l'etude theorique des phenomenes d'ordre dans les proprietes electriques des alliages (1963)}
author = {Beal, M T}
abstractNote = {We have study theoretically the ordering of alloys and its influence an electrical resistivity. We have looked at the cases of concentrated, non magnetic alloys such as Cu Zn {beta} or Cu{sub 3}Au and of diluted, magnetic alloys such as noble matrix with rare earth impurities. In both cases, a simple method of molecular field with nearest neighbour interactions is used. Scattering cross sections are calculated with free electrons and Born approximation. The electrical properties are described with a good accuracy by single diffusions on each center (long range order). But some anomalies near to the ordering temperature are caused by double diffusions on pairs of interacting atoms or spins (local order). (author) [French] On presente une etude theorique des phenomenes d'ordre et de leur influence sur les proprietes electriques des alliages. Deux cas sont envisages: celui des alliages non magnetiques concentres, tels que Cu Zn {beta} ou Cu{sub 3}Au et celui d'alliages magnetiques tres dilues du type matrice noble impuretes de terres rares. Dans les deux cas on utilise une methode simple de champ moleculaire avec interactions entre plus proches voisins seulement. Les sections efficaces de diffusion sont calculees dans un modele d'electrons libres et dans l'approximation de Born. Les proprietes electriques sont decrites en premiere approximation par les diffusions simples sur chaque atome ou spin (ordre a longue distance). Mais elles presentent des anomalies a la temperature d'ordre dues aux diffusions doubles sur des paires d'atomes ou de spins plus proches voisins (ordre local). (auteur)}
place = {France}
year = {1963}
month = {Jul}
}