Local ferromagnetism in microporous carbon with the structural regularity of zeolite Y

被引：64

作者：

Kopelevich, Y ^{[1
]}

da Silva, RR

Torres, JHS

Penicaud, A

Kyotani, T

机构：

[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazil

[2] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

PHYSICAL REVIEW B | 2003年 / 68卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.68.092408

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：4

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