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dc.contributor.authorTrovarelli, O.pt_BR
dc.contributor.authorSereni, J.G.pt_BR
dc.contributor.authorPureur Neto, Paulopt_BR
dc.contributor.authorSchaf, Jacobpt_BR
dc.date.accessioned2014-09-23T02:12:18Zpt_BR
dc.date.issued1995pt_BR
dc.identifier.issn0163-1829pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/103609pt_BR
dc.description.abstractLow-temperature ac and de magnetic susceptibility and specific-heat measurements have been carried out on YNd di1ute alloys, where the Nd concentrations are 1.9, 2.5, 4.5, 6.8, and 9.0 at. %. The most concentrated alloys (4.5, 6.8, and 9.0 at. %) present Iong-range antiferromagnetic spin-density-wave (SDW) order be1ow the criticai temperature, but some residual frustration is 1ikely to produce a reentrant behavior at Iow temperatures, where the magnetic data show strong irreversibility effects and the specific heat indicates the occurrence of an anisotropy induced gap near zero frequency in the density of states of the magnetic excitations. For the less concentrated alloys (1.9 and 2.5 at. %), the interacting magnetic state shows typical features of spin-glass behavior. The evolution to this state is ascribed as being due to impurity disorder and frustration which induces a breaking up of the SDW coherence into small domains.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. B, Condensed matter. New York. Vol. 52, no. 21 (Dec. 1995), p. 15387-15392pt_BR
dc.rightsOpen Accessen
dc.subjectMateriais antiferromagnéticospt_BR
dc.subjectSuscetibilidade magnéticapt_BR
dc.subjectAnisotropia magnéticapt_BR
dc.subjectDominios magneticospt_BR
dc.subjectVidros de spinpt_BR
dc.titleEvidence of spin-density-wave to spin-glass transformation in ynd alloyspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000037352pt_BR
dc.type.originEstrangeiropt_BR


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