Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/100637
Type: Artigo de periódico
Title: Transition From Kondo To Intermediate Valence Regime In (la1-xcex)ni: An Esr Study
Author: Medina A.N.
Gandra F.G.
Azanha W.R.
Cardoso L.P.
Abstract: We report on electron spin resonance (ESR) results for the series of compounds (La1-xCex)Ni doped with Gd. We show that from the Gd g-value and linewidth one can determine the concentration xc where the system goes from Kondo single impurity to Kondo lattice (and intermediate valence) regimes. The observed behaviour in both the g-value and the slope of the linewidth-T curves is explained using the indirect interaction between Gd and Ce moments. The calculation leads to the determination of the Ce-Gd exchange parameter JCe-Gd = 4.8 meV and the Ce-conduction electron exchange parameter \Jf-s\ = 19 meV, for x = 1.
Editor: 
Rights: fechado
Identifier DOI: 10.1088/0953-8984/10/43/020
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0000629874&partnerID=40&md5=88456ce3b660c8c2284e2ac09dd87f91
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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