Magnetic, Structural, and Particle Size Analysis of Single- and Multi-Core Magnetic Nanoparticles
Journal article, 2014
We have measured and analyzed three different commercial magnetic nanoparticle systems, both multi-core and single-core in nature, with the particle (core) size ranging from 20 to 100 nm. Complementary analysis methods and same characterization techniques were carried out in different labs and the results are compared with each other. The presented results primarily focus on determining the particle size-both the hydrodynamic size and the individual magnetic core size-as well as magnetic and structural properties. The used analysis methods include transmission electron microscopy, static and dynamic magnetization measurements, and Mossbauer spectroscopy. We show that particle (hydrodynamic and core) size parameters can be determined from different analysis techniques and the individual analysis results agree reasonably well. However, in order to compare size parameters precisely determined from different methods and models, it is crucial to establish standardized analysis methods and models to extract reliable parameters from the data.
nanoparticles
magnetic particles
Magnetic analysis
magnetic materials
Author
Frank Ludwig
Technische Universität Braunschweig
O. Kazakova
National Physical Laboratory (NPL)
L. F. Barquin
University of Cantabria
A. Fornara
SP Sveriges Tekniska Forskningsinstitut AB
L. Trahms
Physikalisch-Technische Bundesanstalt (PTB)
Uwe Steinhoff
Physikalisch-Technische Bundesanstalt (PTB)
P. Svedlindh
Uppsala University
E. Wetterskog
Uppsala University
Q. A. Pankhurst
University College London (UCL)
P. Southern
University College London (UCL)
P. Morales
University of Cantabria
M. F. Hansen
Technical University of Denmark (DTU)
C. Frandsen
Technical University of Denmark (DTU)
Eva Olsson
Chalmers, Applied Physics, Eva Olsson Group
Stefan Gustafsson
SuMo Biomaterials
Chalmers, Applied Physics, Eva Olsson Group
N. Gehrke
Nanopet Pharma
K. Ludtke-Buzug
Universitaet Zu Lübeck
C. Gruttner
Micromod Partikeltechnologie
Christian Jonasson
RISE Research Institutes of Sweden
C. Johansson
RISE Research Institutes of Sweden
IEEE Transactions on Magnetics
0018-9464 (ISSN)
Vol. 50 11 6971714Subject Categories
Physical Sciences
Nano Technology
DOI
10.1109/TMAG.2014.2321456