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Type: Artigo de periódico
Title: Local ferromagnetism in microporous carbon with the structural regularity of zeolite Y
Author: Kopelevich, Y
da Silva, RR
Torres, JHS
Penicaud, A
Kyotani, T
Abstract: Magnetization M(H,T) measurements have been performed on microporous carbon (MC) with a three-dimensional nanoarray 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.
Country: EUA
Editor: American Physical Soc
Citation: Physical Review B. American Physical Soc, v. 68, n. 9, 2003.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.68.092408
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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