Effective particle magnetic moment of multi-core particles
Journal article, 2015
In this study we investigate the magnetic behavior of magnetic multi-core particles and the differences in the magnetic properties of multi-core and single-core nanoparticles and correlate the results with the nanostructure of the different particles as determined from transmission electron microscopy (TEM). We also investigate how the effective particle magnetic moment is coupled to the individual moments of the single-domain nanocrystals by using different measurement techniques: DC magnetometry, AC susceptometry, dynamic light scattering and TEM. We have studied two magnetic multi-core particle systems BNF Starch from Micromod with a median particle diameter of 100 am and FeraSpin R from nanoPET with a median particle diameter of 70 nm - and one single-core particle system - SHP25 from Ocean NanoTech with a median particle core diameter of 25 nm.
Single-core particles
Magnetic nanoparticles
Multi-core particles
Magnetic relaxation
Author
Fredrik Ahrentorp
Interactive Institute Swedish ICT AB
Andrea Prieto Astalan
Interactive Institute Swedish ICT AB
J. Blomgren
Interactive Institute Swedish ICT AB
Christian Jonasson
Interactive Institute Swedish ICT AB
E. Wetterskog
Uppsala University
P. Svedlindh
Uppsala University
A. Lak
Technische Universität Braunschweig
Frank Ludwig
Technische Universität Braunschweig
L. J. Van Ijzendoorn
Eindhoven University of Technology
F. Westphal
Micromod Partikeltechnologie
C. Gruettner
Micromod Partikeltechnologie
N. Gehrke
Nanopet Pharma
Stefan Gustafsson
Chalmers, Applied Physics, Eva Olsson Group
SuMo Biomaterials
Eva Olsson
Chalmers, Applied Physics, Eva Olsson Group
C. Johansson
Interactive Institute Swedish ICT AB
Journal of Magnetism and Magnetic Materials
0304-8853 (ISSN)
Vol. 380 221-226Subject Categories (SSIF 2011)
Other Engineering and Technologies
DOI
10.1016/j.jmmm.2014.09.070