Blocking temperatures of amorphous iron nanoparticles coated by various surfactants

G. Kataby, Yu Koltypin, A. Ulman, I. Felner, A. Gedanken

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


Amorphous iron nanoparticles obtained by the sonication of Fe(CO) 5 in decalin were coated by various surfactants using the self-assembled monolayer (SAM) technique. They have been shown previously to behave as superparamagnetic materials. These measurements are now extended to include information regarding their blocking temperature (T B ). The results show that for one functional group T B is only slightly dependent on the length of the alkyl chain. On the other hand, the nature of the functional group bonded to the iron particles is strongly affecting T B .

Original languageEnglish
Pages (from-to)191-195
Number of pages5
JournalApplied Surface Science
Issue number1-4
StatePublished - 30 Nov 2002


  • Amorphous materials
  • Magnetic properties
  • Nanoparticles


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