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Local Ferromagnetism in Microporous Carbon with the Structural Regularity of Zeolite Y

Y. Kopelevich·R. R. da Silva·J. H. S. Torres·A. Penicaud·T. Kyotani
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Abstract

Magnetization M(H,T) measurements have been performed on microporous carbon (MC) with a three-dimensional nano-array structure corresponding to that of a zeolite Y supercage. The obtained results unambiguously demonstrate the occurrence of high-temperature ferromagnetism in MC, probably originating from a topological disorder associated with curved graphene sheets. The results provide evidence that the ferromagnetic behavior of MC is governed by isolated clusters in a broad temperature range, and suggest the occurrence of percolative-type transition with the temperature lowering. A comparative analysis of the results obtained on MC and related materials is given.

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Y. Kopelevich, R. R. da Silva, J. H. S. Torres, A. Penicaud, T. Kyotani. 2003-09-08. Local Ferromagnetism in Microporous Carbon with the Structural Regularity of Zeolite Y. https://doi.org/10.1103/physrevb.68.092408

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