Abstract
Results for magnetothermal oscillations and the in situ deHaas-van Alphen effect in acceptor and donor graphite intercalation compounds are presented. The following intercalates have been investigated: C 8 s (NO 3H) s = 2, 3 and 4, C 7 s (SO 3HF) s = 2, 3, C 4 s Br s = 2, C 6 s Li s = 2, C 4 s HgK s = 1, where s is the stage. The observed frequencies range between 40 and 1500 Tesla and the effective masses between 0.05 m 0 and 1 m 0. In acceptor compounds characteristic combinations of frequencies are present which are explained by the magnetic breakdown of the primitive orbits on the FS. A 2D FS model is proposed which includes the electronic structure proposed by Blinowski-Rigaux and the folding due to the periodicity of the intercalate layer. The results for the C 16(NO 3H) are analyzed in terms of a detailed FS. The charge transfer coefficient found is ƒ = 0.6 and the Fermi level shift E F = −1.08 eV.
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