Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/95827
Type: Artigo de periódico
Title: Different Pr3+ Environments In Pr1.85ce0.15cuo4: A Raman Crystal-field Excitation Study
Author: Sanjurjo J.A.
Martins G.B.
Pagliuso P.G.
Granado E.
Torriani I.
Rettori C.
Oseroff S.
Fisk Z.
Abstract: Low-temperature Raman scattering of crystal-field (CF) excitations within the Pr3+ ground-state H43 multiplet of the compound Pr1.85Ce0.15CuO4 suggests the presence of more than one CF environment for the Pr3+ ions. The Raman spectra were similar to spectra obtained in inelastic neutron-scattering experiments. The analysis of the Raman spectra for Pr1.85R0.15CuO4 samples with R=Pr, La, Y, Ce, and Th indicates three different environments for Pr3+. One is associated with charge transfer caused by the replacement of Pr3+ by the tetravalent ions Ce4+ or Th4+. A second is almost identical to that observed in Pr2CuO4. The third is attributed to either an orthorhombic distortion or to sites of smaller lattice volume. The Nd- and Nd(Ce)-based compounds are also discussed. © 1995 The American Physical Society.
Editor: 
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.51.1185
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0042936798&partnerID=40&md5=c23e03361c00a266a27af73e698759ae
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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