Effect of hexane on magnetic blocking behavior of FePt nanoparticles |
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Authors: | Telem Şimşek Serkan Akansel Şadan Özcan |
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Institution: | SNTG Laboratory, Department of Physics Engineering, Hacettepe University, 06800 Beytepe Ankara, Turkey |
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Abstract: | In this work effect of the carrier fluid, hexane, on the magnetic properties of 4.7 nm sized FePt nanoparticles is investigated. Nanoparticles are synthesized by chemical method. Structural and magnetic characterizations confirmed that samples are monodispersed with disordered face centered cubic (fcc) crystal structure and, magnetically, exhibit two blocking behaviors; the first is at 27 K and second at 110 K. Carrier fluid of particles, hexane, is found to influence the blocking of 7% of the total magnetic moments in the system by freezing at low temperatures resulting in a two blocking phenomena even for nanoparticles that are monodispersed with narrow particle size distribution. |
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Keywords: | Blocking temperature Magnetic nanoparticles Superparamagnetism FePt Hexane |
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