Volltext-Downloads (blau) und Frontdoor-Views (grau)

In-situ investigation of temperature induced agglomeration in non-polar magnetic nanoparticle dispersions by small angle X-ray scattering

  • Non-polar magnetic nanoparticles agglomerate upon cooling. This process is followed by in-situ small angle X-ray scattering to assess structural properties of the emerging agglomerates. On the length scale of a few particle diameters, no differences are found between the agglomerates of small (d = 12nm) and large (d = 22nm) nanoparticles. Hard-sphere like random packing with a local packing fraction of η = 0.4 is seen. On larger length scales, small particle form compact superstructures, while large particles arrange into agglomerates that resemble chain-like structure in SAXS. This can be explained by directed magnetic dipole interactions that dominate larger particles, while isotropic van der Waals interaction governs the agglomeration of smaller particles.

Download full text files

Export metadata

Additional Services

Share in Twitter Search Google Scholar


Document Type:Preprint
Author:Christian AppelORCiD, Björn KuttichORCiD, Tobias KrausORCiD, Bernd StühnORCiD
Parent Title (English):arXiv
Edition:version 1
First Page:1
Last Page:5
Date of Publication (online):2023/04/28
Date of first Publication:2020/11/26
Release Date:2023/04/28
Tag:soft condensed matter
DDC classes:500 Naturwissenschaften und Mathematik / 530 Physik
Open Access:Open Access
Signature:INM 2020/157_preprint
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International