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|Type:||Artigo de periódico|
|Title:||Esr Of Mn2+ In Alcl3-graphite Intercalated Compounds|
|Abstract:||Electron-spin-resonance experiments of Mn2+ impurities in stage-2 AlCl3-graphite intercalated compounds show the usual conduction-carrier spin resonance and a completely resolved Mn2+ spectrum of axial symmetry with the axial axis perpendicular to the carbon layers. The temperature dependence of the Mn2+ second-order crystal-field parameter and spin-lattice relaxation time are reported. The hyperfine splittings were found to be temperature independent. The observed anomalies in the linewidth of the conduction-carrier spin resonance and the intensity of the Mn2+ resonance at T200 K are interpreted in terms of a quasi-two-dimensional order-disorder phase transition experienced by the intercalant molecules at this temperature. © 1989 The American Physical Society.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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