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Magnetic properties of nanoparticle compacts with controlled broadening of the particle size distribution

Andersson, Mikael Svante (author)
Uppsala universitet,Fasta tillståndets fysik
Mathieu, Roland (author)
Uppsala universitet,Fasta tillståndets fysik
Normile, Peter S. (author)
Univ Castilla La Mancha, Spain
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Lee, Su Seong (author)
Inst Bioengn & Nanotechnol, Singapore
Singh, Gurvinder (author)
Norwegian Univ Sci & Technol NTNU, Dept Mat Sci & Engn, Norway
Nordblad, Per (author)
Uppsala universitet,Fasta tillståndets fysik
De Toro, José A. (author)
Univ Castilla La Mancha, Spain
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 (creator_code:org_t)
2017
2017
English.
In: Physical Review B. - 2469-9950 .- 2469-9969. ; 95:18
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Binary random compacts with different proportions of small (volume V) and large (volume 2V) essentially bare maghemite nanoparticles are used to investigate the effect of controllably broadening the particle size distribution on the magnetic properties of magnetic nanoparticle assemblies with strong dipolar interaction. A series of eight random mixtures of highly uniform 9.0- and 11.5-nm-diameter maghemite particles prepared by thermal decomposition is studied. In spite of the severely broadened size distributions in the mixed samples, well-defined superspin glass transition temperatures are observed across the series, their values increasing linearly with the weight fraction of large particles.

Subject headings

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

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