Movement of liquid gallium dispersing low concentration of temperature sensitive magnetic particles under magnetic field

In this work, a temperature sensitive functional fluid was synthesized, and then its movement under the influence of magnetic field was investigated. Silica coated FeNbVB particles, prepared by chemical synthesis, were dispersed into liquid gallium, because they have a relatively high magnetization...

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Veröffentlicht in:Journal of magnetism and magnetic materials 2011-05, Vol.323 (10), p.1207-1210
Hauptverfasser: Fujita, Toyohisa, Park, Hyun-Seo, Ono, Kenji, Matsuo, Seiji, Okaya, Katsunori, Dodbiba, Gjergj
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Sprache:eng
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Zusammenfassung:In this work, a temperature sensitive functional fluid was synthesized, and then its movement under the influence of magnetic field was investigated. Silica coated FeNbVB particles, prepared by chemical synthesis, were dispersed into liquid gallium, because they have a relatively high magnetization and a high temperature dependency. The synthesized functional fluid (solid fraction of 0.3 mass%) showed temperature dependence for magnetization within the testing temperature range between 298 and 353 K. The movement of gallium based fluid under the influence of the magnetic field with a magnetic field gradient was observed at various temperatures. We found that at 318 K, fluid displacement of the synthesized functional fluid is better when compared with the fluid displacement at 348 K. ► A temperature sensitive functional fluid was synthesized, and its movement under the influence of magnetic field was investigated. ► Silica-coated FeNbVB particles, prepared by chemical synthesis, were dispersed into liquid gallium, because they have a relatively high magnetization and a high temperature dependency. ► The synthesized functional fluid (solid fraction of 0.3 mass%) showed temperature dependence for magnetization within the testing temperature range between 298 and 353 K. ► The experimental results indicated that the synthesized functional fluid is temperature dependent for magnetization with 7.1 (A/m K) magnetic properties, within the tested temperature range between 298 and 353 K.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2010.11.007