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Effective particle magnetic moment of multi-core particles

F. Ahrentorp ; A. Astalan ; J. Blomgren ; C. Jonasson ; E. Wetterskog ; P. Svedlindh ; A. Lak ; F. Ludwig ; L. J. Van Ijzendoorn ; F. Westphal ; C. Gruettner ; N. Gehrke ; Stefan Gustafsson (Institutionen för teknisk fysik, Eva Olsson Group ; SuMo Biomaterials) ; Eva Olsson (Institutionen för teknisk fysik, Eva Olsson Group ) ; C. Johansson
Journal of Magnetism and Magnetic Materials (0304-8853). Vol. 380 (2015), p. 221-226.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Magnetic nanoparticles, Magnetic relaxation, Multi-core particles, Single-core particles



Denna post skapades 2015-03-11. Senast ändrad 2016-03-21.
CPL Pubid: 213637

 

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Institutioner (Chalmers)

Institutionen för teknisk fysik, Eva Olsson Group (2012-2015)
SuMo Biomaterials

Ämnesområden

Teknisk fysik

Chalmers infrastruktur