Blocking temperatures of amorphous iron nanoparticles coated by various surfactants
| Autor: | G. Kataby, Yu. Koltypin, Abraham Ulman, Israel Felner, Aharon Gedanken |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
chemistry.chemical_classification
Materials science Sonication Inorganic chemistry General Physics and Astronomy Nanoparticle Surfaces and Interfaces General Chemistry Condensed Matter Physics Surfaces Coatings and Films Amorphous solid chemistry.chemical_compound Decalin chemistry Monolayer Magnetic nanoparticles Alkyl Superparamagnetism |
| Zdroj: | Applied Surface Science. 201:191-195 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/s0169-4332(02)00895-4 |
| Popis: | 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 . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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