Dependence of the magnetocaloric effect in superparamagnetic nanocomposites on the distribution of magnetic moment size

The magnetocaloric effect of superparamagnetic nanocomposites was studied by evaluating their magnetic entropy changes ΔS from magnetization data sets. Influence of distribution of the magnetic moment size on ΔS was evaluated. It is pointed out that a narrow size distribution is favorable for high p...

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Veröffentlicht in:	Scripta materialia 2002-01, Vol.46 (1), p.89-94
Hauptverfasser:	Yamamoto, T.A., Tanaka, M., Misaka, Y., Nakagawa, T., Nakayama, T., Niihara, K., Numazawa, T.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Fine-particle systems Functional nanocomposite Iron Magnetic method Magnetic properties and materials Magnetocaloric effect Metals. Metallurgy Physics Small particles and nanoscale materials Studies of specific magnetic materials
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Zusammenfassung:	The magnetocaloric effect of superparamagnetic nanocomposites was studied by evaluating their magnetic entropy changes ΔS from magnetization data sets. Influence of distribution of the magnetic moment size on ΔS was evaluated. It is pointed out that a narrow size distribution is favorable for high performance of the magnetocaloric effect.
ISSN:	1359-6462 1872-8456
DOI:	10.1016/S1359-6462(01)01203-9