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Size analysis of si...
Size analysis of single-core magnetic nanoparticles
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- Ludwig, Frank (författare)
- Technische Universität Braunschweig, Germany
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- Balceris, Christoph (författare)
- Technische Universität Braunschweig, Germany
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- Viereck, Thilo (författare)
- Technische Universität Braunschweig, Germany
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- Posth, Oliver (författare)
- Physikalisch-Technische Bundesanstalt, Germany,Physikalisch-Technische Bundesanstalt (PTB)
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- Steinhoff, Uwe (författare)
- Physikalisch-Technische Bundesanstalt, Germany,Physikalisch-Technische Bundesanstalt (PTB)
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- Gavilan, Helena (författare)
- CSIC Instituto de Ciencia de Materiales de Madrid, Spain,CSIC - Instituto de Ciencia de Materiales de Madrid (ICMM)
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- Costo, Rocio (författare)
- CSIC Instituto de Ciencia de Materiales de Madrid, Spain,CSIC - Instituto de Ciencia de Materiales de Madrid (ICMM)
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- Zeng, Lunjie, 1983 (författare)
- Chalmers University of Technology, Sweden,Chalmers tekniska högskola
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- Olsson, Eva, 1960 (författare)
- Chalmers University of Technology, Sweden,Chalmers tekniska högskola
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- Jonasson, Christian (författare)
- RISE,Acreo,RISE Research Institutes of Sweden
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- Johansson, Christer (författare)
- RISE,Acreo
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(creator_code:org_t)
- Elsevier BV, 2017
- 2017
- Engelska.
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Ingår i: Journal of Magnetism and Magnetic Materials. - : Elsevier BV. - 0304-8853 .- 1873-4766. ; 427, s. 19-24
- Relaterad länk:
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- Single-core iron-oxide nanoparticles with nominal core diameters of 14 nm and 19 nm were analyzed with a variety of non-magnetic and magnetic analysis techniques, including transmission electron microscopy (TEM), dynamic light scattering (DLS), static magnetization vs. magnetic field (M-H) measurements, ac susceptibility (ACS) and magnetorelaxometry (MRX). From the experimental data, distributions of core and hydrodynamic sizes are derived. Except for TEM where a number-weighted distribution is directly obtained, models have to be applied in order to determine size distributions from the measurand. It was found that the mean core diameters determined from TEM, M-H, ACS and MRX measurements agree well although they are based on different models (Langevin function, Brownian and Néel relaxation times). Especially for the sample with large cores, particle interaction effects come into play, causing agglomerates which were detected in DLS, ACS and MRX measurements. We observed that the number and size of agglomerates can be minimized by sufficiently strong diluting the suspension.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Brownian and Néel relaxation
- Dynamic light scattering
- Magnetization
- Single-core nanoparticles
- Size distribution
- Transmission electron microscopy
- Agglomeration
- Electron microscopy
- High resolution transmission electron microscopy
- Light scattering
- Magnetic susceptibility
- Magnetism
- Nanoparticles
- Ac susceptibility (ACS)
- Brownian
- Iron oxide nanoparticle
- Langevin functions
- Magnetic nano-particles
- Magnetorelaxometry (MRX)
- Static magnetization
- Weighted distribution
- Nanomagnetics
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Ludwig, Frank
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Balceris, Christ ...
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Viereck, Thilo
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Posth, Oliver
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Steinhoff, Uwe
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Gavilan, Helena
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visa fler...
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Costo, Rocio
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Zeng, Lunjie, 19 ...
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Olsson, Eva, 196 ...
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Jonasson, Christ ...
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Johansson, Chris ...
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- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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och Den kondenserade ...
- Artiklar i publikationen
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Journal of Magne ...
- Av lärosätet
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RISE
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Chalmers tekniska högskola