Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/65576
Type: Artigo de periódico
Title: ESE studies of pristine paramagnetic species of C-60 powder samples
Author: Pinhal, NM
Vugman, NV
Herbst, MH
Dias, GHM
Abstract: Paramagnetic centers in pristine polycrystalline C-60 samples are investigated at room temperature using continuous wave electron paramagnetic resonance (CW-EPR) and electron spin-echo spectroscopy. Two paramagnetic species, with same measured g-values, are separated using echo-detected EPR and the PEANUT pulse scheme. Electron-spin nutation frequencies for both species are measured using the latter technique. For the doublet species, usually observed by CW-EPR, nutation frequency is 7.5 MHz. The second species, with a nutation frequency of 10.4 MHz, is a spin triplet. This species is solely revealed by pulse methods and corresponds to dipolar coupling of C-60 paramagnetic centers located at the diagonals of the fullerene fee lattice.
Country: EUA
Editor: Amer Chemical Soc
Rights: fechado
Identifier DOI: 10.1021/jp9933572
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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