Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/86153
Type: Artigo de evento
Title: Absence Of Exchange Interaction Between Localized Magnetic Moments And Conduction-electrons In Diluted Er3+ Gold-nanoparticles
Author: Lesseux G.G.
Iwamoto W.
Garcia-Flores A.F.
Urbano R.R.
Rettori C.
Abstract: The Electron Spin Resonance (ESR) of diluted Er3+ magnetic ions in Au nanoparticles (NPs) is reported. The NPs were synthesized by reducing chloro triphenyl-phosphine gold(I) and erbium(III) trifluoroacetate. The Er 3+ g-value along with the observed hyperfine splitting indicate that the Er3+ impurities are in a local cubic symmetry. Furthermore, the Er3+ ESR spectra show that the exchange interaction between the 4f and the conduction electrons (ce) is absent or negligible in Au 1-xErx NPs, in contrast to the ESR results in bulk Au1-xErx. Therefore, the nature of this interaction needs to be reexamined at the nano scale range. © 2014 AIP Publishing LLC.
Editor: American Institute of Physics Inc.
Rights: aberto
Identifier DOI: 10.1063/1.4867126
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84903907669&partnerID=40&md5=040cd55a67bf176ae5f79ba463c358cf
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.