EPR LINEWIDTH OF LOCAL MAGNETIC-MOMENTS DILUTED IN CE INTERMEDIATE-VALENCE COMPOUNDS

dc.creatorVENEGAS, PA
dc.creatorBARBERIS, GE
dc.date1992
dc.date37073
dc.date2014-12-16T11:35:53Z
dc.date2015-11-26T17:15:24Z
dc.date2014-12-16T11:35:53Z
dc.date2015-11-26T17:15:24Z
dc.date.accessioned2018-03-29T00:03:39Z
dc.date.available2018-03-29T00:03:39Z
dc.identifierPhysical Review B. American Physical Soc, v. 46, n. 2, n. 911, n. 914, 1992.
dc.identifier0163-1829
dc.identifierWOS:A1992JC92200034
dc.identifier10.1103/PhysRevB.46.911
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/65511
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/65511
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/65511
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1282040
dc.descriptionAnomalous thermal behavior on the EPR linewidths has been observed for Gd impurities diluted in CexA1-xBn (A = La, Y, B = Ir,Os,Rh,Pd) intermediate-valence compounds. In this work we show that the exchange interaction between the local magnetic moments and the intermediate-valence host ions has an important contribution to the relaxation rates of the local moments. We calculated the relaxation, using the Redfield formalism and the ideas contained in the interconfigurational fluctuation model of Hirst. We show that the exchange interaction contribution has an exponential dependence on the excitation energy of the intermediate-valence ions.
dc.description46
dc.description2
dc.description911
dc.description914
dc.languageen
dc.publisherAmerican Physical Soc
dc.publisherCollege Pk
dc.publisherEUA
dc.relationPhysical Review B
dc.relationPhys. Rev. B
dc.rightsaberto
dc.sourceWeb of Science
dc.subjectFluctuations
dc.subjectImpurities
dc.titleEPR LINEWIDTH OF LOCAL MAGNETIC-MOMENTS DILUTED IN CE INTERMEDIATE-VALENCE COMPOUNDS
dc.typeArtículos de revistas


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