Synthesis, characterization, and magnetic properties of room-temperature nanofluid ferromagnetic graphite

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

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Abstract

We report the chemical synthesis route, structural characterization, and physical properties of nanofluid magnetic graphite (NFMG) obtained from the previously synthesized bulk organic magnetic graphite (MG) by stabilizing the aqueous ferrofluid suspension with an addition of active cationic surfactant. The measured magnetization-field hysteresis curves along with the temperature dependence of magnetization confirmed room-temperature ferromagnetism in both MG and NFMG samples.

Original languageEnglish
Article number233120
JournalApplied Physics Letters
Volume95
Issue number23
DOIs
StatePublished - 2009
Externally publishedYes

Bibliographical note

Funding Information:
This work has been financially supported by the Brazilian agencies CNPq, CAPES, and FAPESP.

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