Pulsed NMR measurements of the susceptibility and the transverse and longitudinal relaxation times of 3 He intermixed with 9 nm of carbon particles have been performed down to 0.4 mK. The results indicate that the first atomic layer has an antiferromagnetic exchange interaction. The intermediate solid-liquid region, ~ 5 atomic layers thick, favors ferromagnetism and approaches a ferromagnetic transition at the lowest temperatures.

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