Temperature oscillations of magnetization observed in nanofluid ferromagnetic graphite

S. Sergeenkov; N. S. Souza; C. Speglich; V. A.G. Rivera; C. A. Cardoso; H. Pardo; A. W. Mombrú; F. M. Araújo-Moreira

doi:10.1088/0953-8984/21/49/495303

Temperature oscillations of magnetization observed in nanofluid ferromagnetic graphite

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

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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 language	English
Article number	495303
Journal	Journal of Physics Condensed Matter
Volume	21
Issue number	49
DOIs	https://doi.org/10.1088/0953-8984/21/49/495303
State	Published - 2009

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title = "Temperature oscillations of magnetization observed in nanofluid ferromagnetic graphite",

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).",

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T1 - Temperature oscillations of magnetization observed in nanofluid ferromagnetic graphite

AU - Sergeenkov, S.

AU - Souza, N. S.

AU - Speglich, C.

AU - Rivera, V. A.G.

AU - Cardoso, C. A.

AU - Pardo, H.

AU - Mombrú, A. W.

AU - Araújo-Moreira, F. M.

PY - 2009

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AB - 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).

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DO - 10.1088/0953-8984/21/49/495303

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JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

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ER -

Temperature oscillations of magnetization observed in nanofluid ferromagnetic graphite

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