The magnetic susceptibility of graphite biintercalated with CoCl2 and GaCl3

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Abstract
We present the first results of magnetic susceptibility on CoCl2-GaCl 3 biintercalated in graphite, and compare them with those obtained in second stage CoCl2-graphite. A fit by a power law above the maximum of the susceptibility present two regimes : in the high temperature one, the γ values are high and even higher in the CoCl2-GaCl 3 compound. This indicates that the three-dimensional coupling is lower in the biintercalation compound. In the low temperature regime, near the transition, the susceptibility is driven by the islandic nature of the intercalate layer