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Type: Artigo de periódico
Title: The g-value of Er3+ doped unfilled skutterudite CoSb3 (T-h) reveals the existence of an additional sixth order term in the crystal field Hamiltonian
Author: Vargas, JM
Garcia, FA
Rettori, C
Garcia, DJ
Sales, B
Schlottmann, P
Oseroff, SB
Abstract: Electron spin resonance (ESR) experiments have been carried out in single crystals of the unfilled skutterudite CoSb3 doped with Er ions. The X- (9.5 GHz) and Q- (34.4 GHz) band spectra obtained at low temperature (4-20 K) shown a temperature independent g-value of 6.21(5). This g-value can only be explained with the addition of a second sixth order B-6(1)(O-6(2) - O-6(6)) term to the usual cubic crystal field Hamiltonian. The ESR of Er3+ show the typical temperature dependence of the line-shape and line-width expected for insulating host. (C) 2009 Elsevier B.V. All rights reserved.
Subject: Filled skutterudite
Rare-earth metal
Country: Holanda
Editor: Elsevier Science Bv
Citation: Physica B-condensed Matter. Elsevier Science Bv, v. 404, n. 19, n. 3035, n. 3037, 2009.
Rights: fechado
Identifier DOI: 10.1016/j.physb.2009.07.012
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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