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dc.contributor.authorPaduani, C.
dc.contributor.authorMigliavacca, A.
dc.contributor.authorKrause, J.C.
dc.contributor.authorArdisson, José Domingos
dc.contributor.authorYoshida, M.I.
dc.identifier.issnISSN 0103-9733
dc.description.abstractCo2+x+yMn1-xAl1-y intermetallic compounds have been prepared by arc melting and studied with X-ray diffraction and magnetization measurements to ascertain the effect of deviations of composition from the stoichiometry on the ferromagnetism of this system. Hysteresis loops registered at room temperature show a soft ferromagnetic behavior in excess Co. In off-stoichiometric alloys the saturation magnetization is lower than in Co2MnAl, whereas the Curie temperature TC is higher in all the studied alloys. TC varies substantially with variations in composition and increases with the Mn content. In the source of this behavior a volume effect is inferred which is expected to lead to strengthened ferromagnetic exchanges.
dc.subjectHeusler alloys
dc.subjectferromagnetic materials
dc.titleStructural and magnetic properties of the half-ferromagnetic Co2+x+yMn1-xAl1-y alloys
dc.typeArtigo Periódico
dc.creator.affiliationUniversidade Federal de Santa Catarina/UFSC, Florianópolis, SC, Brasil
dc.creator.affiliationUniversidade Federal de Santa Catarina/UFSC, Florianópolis, SC, Brasil
dc.creator.affiliationUniversidade Regional Intregada do Alto Uruguai e das Missões/URI, Santo Ângelo, RS, Brasil
dc.creator.affiliationCentro de Desenvolvimento da Tecnologia Nuclear/CDTN, Belo Horizonte, MG, Brasil
dc.creator.affiliationUniversidade Federal de Minas Gerais/UFMG, Belo Horizonte, MG, Brasil
dc.title.journalBrazilian Journal of Physics São Paulo
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