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Preparation of iron...
Preparation of iron oxide nanocrystals by surfactant-free or oleic acid-assisted thermal decomposition of a Fe(III) alkoxide
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- Ahniyaz, Anwar (författare)
- Stockholm University, Sweden,SLU Swedish University of Agricultural Sciences, Sweden
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Seisenbaeva, Gulam A. (författare)
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- Häggström, Lennart (författare)
- Uppsala universitet,Materialfysik,Uppsala University, Sweden,Stockholm University, Sweden
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- Kamali, Saeed (författare)
- Uppsala universitet,Materialfysik,Uppsala University, Sweden
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- Kessler, Vadim G. (författare)
- SLU Swedish University of Agricultural Sciences, Sweden
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- Nordblad, Per (författare)
- RISE,Uppsala universitet,Fasta tillståndets fysik,Acreo
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- Johansson, Christer (författare)
- RISE,Acreo
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Bergström, Lennart (författare)
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(creator_code:org_t)
- Elsevier BV, 2008
- 2008
- Engelska.
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Ingår i: Journal of Magnetism and Magnetic Materials. - : Elsevier BV. - 0304-8853 .- 1873-4766. ; 320:6, s. 781-787
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- A new non-hydrolytic, alkoxide-based route was developed to synthesize iron oxide nanocrystals. Surfactant-free thermal decomposition of the iron 2-methoxy-ethoxide precursors results in the formation of uniform iron oxide nanocrystals with an average size of 5.6 nm. Transmission electron microscope study shows that the nanocrystals are protected against aggregation by a repulsive surface layer, probably originating from the alkoxy-alkoxide ligands. Addition of oleic acid resulted in monodisperse nanocrystals with an average size of 4 nm. Mössbauer analysis confirmed that the nanocrystals mainly consisted of maghemite. Analysis of the magnetic hysteresis loop measurements and the zero field and field cooled measurements displayed an excellent fit to established theories for single-domain superparamagnetic nanocrystals and the size of the magnetic domains correlated well to the crystallite size obtained from transmission electron microscope.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Data- och informationsvetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences (hsv//eng)
Nyckelord
- Ironoxide
- Nanocrystal
- Synthesis
- alkoxide
- Superparamagnetic
- Physics
- Fysik
- TECHNOLOGY
- TEKNIKVETENSKAP
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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