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2012 | 121 | 5-6 | 1321-1323
Article title

Physical Properties of Magnetite Nanoparticles Covered by 11-Mercaptoundecanoic Acid

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EN
Abstracts
EN
We have investigated the magnetic behavior of magnetite nanoparticles covered by the 11-mercaptoundecanoic acid around magnetite core prepared by a standard co-precipitation method. The particles show superparamagnetic behavior at room temperature, with transition to a blocked state at blocking temperature 91 K estimated from zero field cooled and field cooled at 500 Oe experiment. The hysteresis loop measured at 293 K showed magnetization 32.8 emu/g at 50 kOe without any coercivity. The mean particle size (7.1 nm) was determined by fitting a magnetization curve obtained at 295 K assuming a log-normal size distribution.
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Contributors
author
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia
author
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia
author
  • Department of Biochemistry, Faculty of Sciences UPJS, Moyzesova 11, 041 54 Kosice, Slovakia
author
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia
author
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia
author
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv121n5-6p103kz
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