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Type: Artigo de periódico
Title: Electron Spin Resonance Of Gd3+ In Gdm Mn In3m+2n (m=rh,ir; N=0,1; M=1,2) Antiferromagnets
Author: Duque J.G.S.
Adriano C.
Lora-Serrano R.
Rettori C.
Urbano R.R.
Sarrao J.L.
Oseroff S.B.
Pagliuso P.G.
Abstract: We report electron spin resonance experiments of Gd3+ in the Gdm Mn In3m+2n (M=Rh,Ir; n=0,1; m=1,2) intermetallic compounds. For T TN ∼45 K, all compounds present a single Dysonian resonance and show a Korringa-like temperature dependence of the linewidth, ΔH=a+bT. The residual linewidth a is strongly affected by the transition metal M=Rh or Ir and/or by the layering (m=1 or 2) or change in structure (n=0,1). The residual linewidth is associated with an unresolved crystalline electrical field (CEF) fine structure. Consequently, a systematic evolution of the CEF in the Gdm Mn In3m+2n compounds is inferred. A discussion to what extent our results can explain to the CEF effects observed in isostructural R-based compounds will be given. © 2008 American Institute of Physics.
Rights: aberto
Identifier DOI: 10.1063/1.2839592
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

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