Abstract
We studied magnetic properties of a composite of para n and graphene akes. Magnetic properties of this composite were investigated by ferromagnetic resonance/electron spin resonance technique. The ferromagnetic resonance signal from graphene suspension in para n is broad and shifted from magnetic eld corresponding to g ≈ 2 to the low magnetic eld. The temperature dependence of the spectra shows that magnetic ordering in the studied system is sensitive to thermal uctuations. These features are expected for the 1D ferromagnetism and the obtained results are analyzed in the frame of the theoretical predictions concerning magnetic correlations at graphene edges. Therefore, based on our investigation we can conclude the existence of the magnetic edges in graphene and presence of the ferromagnetic correlations between edge spins.
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