Temperature oscillations of magnetization observed in nanofluid ferromagnetic graphite

S. Sergeenkov, N. S. Souza, C. Speglich, Victor Anthony Garcia Rivera, C. A. Cardoso, H. Pardo, A. W. Mombrú, F. M. Araújo-Moreira

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6 Scopus citations

Abstract

We report on unusual magnetic properties observed for nanofluid room temperature ferromagnetic graphite (with an average particle size of l≃10nm). More precisely, the measured magnetization exhibits a low temperature anomaly (attributed to the manifestation of finite size effects below the quantum temperature T1∝h2/l2) as well as pronounced temperature oscillations above T = 50K (attributed to manifestation of the hard-sphere type of pair correlations between ferromagnetic particles in the nanofluid).

Original languageEnglish
Article number495303
JournalJournal of Physics Condensed Matter
Volume21
Issue number49
DOIs
StatePublished - 2009
Externally publishedYes

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