Magnetic measurements of point defect elimination in quenched CoGa and FeAl intermetallic compounds
Identifieur interne : 000672 ( Istex/Corpus ); précédent : 000671; suivant : 000673Magnetic measurements of point defect elimination in quenched CoGa and FeAl intermetallic compounds
Auteurs : O. Sassi ; S. Benlemlih ; J. Aride ; A. Berrada ; G. MoyaSource :
- Journal of Alloys and Compounds [ 0925-8388 ] ; 1992.
Abstract
The elimination of antistructure atoms via vacancies in CoGa and FeAl ordered with the B2 (CsCl-type) structure has been investigated using magnetic measurements. During an annealing out of quenched-in antistructure atoms, the magnetic susceptibility must decrease. This behaviour is observed in CoGa alloys, whereas in the case of FeAl alloys the annealing out of quenched-in defects starts by a slight increase followed by a strong decrease in susceptibility. These different behaviours are attributed to the different concentrations existing for the two kinds of vacancies which are present in both compounds. These concentrations are calculated in the Bragg Williams approximation.
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DOI: 10.1016/0925-8388(92)90686-4
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During an annealing out of quenched-in antistructure atoms, the magnetic susceptibility must decrease. This behaviour is observed in CoGa alloys, whereas in the case of FeAl alloys the annealing out of quenched-in defects starts by a slight increase followed by a strong decrease in susceptibility. These different behaviours are attributed to the different concentrations existing for the two kinds of vacancies which are present in both compounds. These concentrations are calculated in the Bragg Williams approximation.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>O. Sassi</name><affiliations><json:string>Laboratoire de Physico-Chimie des Matériaux, Ecole Normale Supérieure de Takaddoum, BP 5118, Rabat, Morocco</json:string></affiliations></json:item><json:item><name>S. 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During an annealing out of quenched-in antistructure atoms, the magnetic susceptibility must decrease. This behaviour is observed in CoGa alloys, whereas in the case of FeAl alloys the annealing out of quenched-in defects starts by a slight increase followed by a strong decrease in susceptibility. These different behaviours are attributed to the different concentrations existing for the two kinds of vacancies which are present in both compounds. 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During an annealing out of quenched-in antistructure atoms, the magnetic susceptibility must decrease. This behaviour is observed in CoGa alloys, whereas in the case of FeAl alloys the annealing out of quenched-in defects starts by a slight increase followed by a strong decrease in susceptibility. These different behaviours are attributed to the different concentrations existing for the two kinds of vacancies which are present in both compounds. These concentrations are calculated in the Bragg Williams approximation.</ce:simple-para></ce:abstract-sec></ce:abstract></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Magnetic measurements of point defect elimination in quenched CoGa and FeAl intermetallic compounds</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Magnetic measurements of point defect elimination in quenched CoGa and FeAl intermetallic compounds</title></titleInfo><name type="personal"><namePart type="given">O.</namePart><namePart type="family">Sassi</namePart><affiliation>Laboratoire de Physico-Chimie des Matériaux, Ecole Normale Supérieure de Takaddoum, BP 5118, Rabat, Morocco</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S.</namePart><namePart type="family">Benlemlih</namePart><affiliation>Laboratoire de Physico-Chimie des Matériaux, Ecole Normale Supérieure de Takaddoum, BP 5118, Rabat, Morocco</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Aride</namePart><affiliation>Laboratoire de Physico-Chimie des Matériaux, Ecole Normale Supérieure de Takaddoum, BP 5118, Rabat, Morocco</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.</namePart><namePart type="family">Berrada</namePart><affiliation>Laboratoire de Physique des Matériaux, Faculté des Sciences, Avenue Ibn Batouta, BP 1014 Rabat, Morocco</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">Moya</namePart><affiliation>Laboratoire de Physique des Matériaux, Faculté des Sciences et Techniques de Saint Jérôme, Case 222, 13397 Marseille, Cedex, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1992</dateIssued><copyrightDate encoding="w3cdtf">1992</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">The elimination of antistructure atoms via vacancies in CoGa and FeAl ordered with the B2 (CsCl-type) structure has been investigated using magnetic measurements. During an annealing out of quenched-in antistructure atoms, the magnetic susceptibility must decrease. This behaviour is observed in CoGa alloys, whereas in the case of FeAl alloys the annealing out of quenched-in defects starts by a slight increase followed by a strong decrease in susceptibility. These different behaviours are attributed to the different concentrations existing for the two kinds of vacancies which are present in both compounds. 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