Paramagnetic defects in hydrogenated amorphous carbon powders
作者： D J Keeble , K M Robb , G M Smith , H El Mkami , S E Rodil
DOI: 10.1088/0953-8984/15/44/002
关键词:
摘要: Hydrogenated amorphous carbon materials typically contain high concentrations of paramagnetic defects, the density which can be quantified by electron resonance (EPR). In this work EPR measurements near 9.5, 94, and 189 GHz have been performed on polymeric diamond-like hydrogenated (a-C:H) powder samples. A similar single line was observed at all frequencies for two forms a-C:H studied. No contributions to spectrum from centres with resolved anisotropic g-values as reported earlier were detected. An increase in linewidth microwave frequency observed. Possible dependence are discussed.
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