Abstract
Time resolved ESR studies of some acceptor type GIC, HOPG/AsF5 and HOPG/BF3/F2, are reported. Free induction decay (FID) spectroscopy yields the dynamical relaxation time T2* associated with mobile spins. T2* was found to be almost isotropic and only slightly temperature dependent. T2* times are consistent with CW-ESR linewidths measured on the same samples. In additionn, we found a weak Hahn echo at g ≈ 2 for several HOPG/AsF5 GIC below T = 20K. The Hahn echo signal is attributed to localized spins on the graphite layers.
Original language | English |
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Pages (from-to) | 291-295 |
Number of pages | 5 |
Journal | Synthetic Metals |
Volume | 23 |
Issue number | 1-4 |
DOIs | |
State | Published - Mar 1988 |