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Type: Artigo de evento
Title: Esr Of Graphite-like Amorphous Carbon Thin Film In The 20 – 340 K Temperature Range
Author: Viana G.A.
Marques F.C.
Abstract: Electron spin resonance of graphite-like a-C thin films is investigated in the 20 K up to 340 K temperature range. The films with sp2 concentration of about 90 % (determined by electron energy loss spectroscopy), with no measurable optical band gap, were prepared by ion beam assisted sputtering. The results revealed an unexpected low density of paramagnetic centers, ascribed to itinerant states (conduction electrons) and not to localized states usually reported for a-C with band gap higher than 1.0 eV. © 2007 Materials Research Society.
Citation: Materials Research Society Symposium Proceedings. , v. 984, n. , p. 80 - 83, 2007.
Rights: fechado
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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