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.

Magnetic nanoparticles

Single-core particles

Multi-core particles

Magnetic relaxation

Author

Fredrik Ahrentorp

Acreo Swedish ICT AB

Andrea Prieto Astalan

Acreo Swedish ICT AB

J. Blomgren

Acreo Swedish ICT AB

Christian Jonasson

Acreo 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

Acreo Swedish ICT AB

Journal of Magnetism and Magnetic Materials

0304-8853 (ISSN)

Vol. 380 221-226

Subject Categories

Other Engineering and Technologies

DOI

10.1016/j.jmmm.2014.09.070

More information

Latest update

9/6/2018 1