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The influence of pa...
The influence of particle size interactions on the magnetization susceptibility of nanometre-size particles
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- Hanson, Maj (författare)
- Chalmers University of Technology, Sweden
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- Johansson, Christer (författare)
- RISE,Acreo
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- Pedersen, Michael S. (författare)
- Chalmers University of Technology, Sweden
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- Mörup, Steen (författare)
- Chalmers University of Technology, Sweden
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(creator_code:org_t)
- 1999-01-01
- 1995
- Engelska.
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Ingår i: Journal of Physics: Condensed Matter. - : IOP Publishing. - 0953-8984 .- 1361-648X. ; 7, s. 9269-9277
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We studied the magnetic properties of frozen magnetic liquids containing amorphous Fe1-xCx particles. By varying the particle size and concentration, we could separate single particle effects from interactions. In samples containing particles with median diameters 5.0 nm and 3.8 nm and with spontaneous saturation magnetizations 7.1 kA m-1 and 9.2 kA m -1, effects of particle interactions are observed. For 3.2 nm no interactions were observed. In samples with negligible interactions the superparamagnetic blocking temperature increases with the particle size. The effective anisotropy constant increases with decreasing particle size, implying that the anisotropy is enhanced by surface effects.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences (hsv//eng)
Nyckelord
- magnetic nanoparticles
- Magnetic analysis
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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