Magnetic, Structural, and Particle Size Analysis of Single- and Multi-Core Magnetic Nanoparticles
Artikel i vetenskaplig tidskrift, 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.

Magnetic analysis

magnetic materials

magnetic particles



Frank Ludwig

Technische Universität Braunschweig

O. Kazakova

National Physical Laboratory (NPL)

L. F. Barquin

Universidad de Cantabria

A. Fornara

SP Sveriges Tekniska Forskningsinstitut

L. Trahms

Physikalisch-Technische Bundesanstalt (PTB)

Uwe Steinhoff

Physikalisch-Technische Bundesanstalt (PTB)

P. Svedlindh

Uppsala universitet

E. Wetterskog

Uppsala universitet

Q. A. Pankhurst

University College London (UCL)

P. Southern

University College London (UCL)

P. Morales

Universidad de Cantabria

M. F. Hansen

Danmarks Tekniske Universitet (DTU)

C. Frandsen

Danmarks Tekniske Universitet (DTU)

Eva Olsson

Chalmers, Teknisk fysik, Eva Olsson Group

Stefan Gustafsson

Chalmers, Teknisk fysik, Eva Olsson Group

SuMo Biomaterials

N. Gehrke

NanoPET Pharma GmbH

K. Ludtke-Buzug

Universitaet Zu Lübeck

C. Gruttner

Micromod Partikeltechnologie

Christian Jonasson

Acreo AB

C. Johansson

Acreo AB

IEEE Transactions on Magnetics

0018-9464 (ISSN)

Vol. 50