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Magnetic properties and heating effect in bacterial magnetic nanoparticles |
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| Authors: | Milan Timko Anezka Dzarova Andrzej Skumiel Tomasz Hornowski Vlasta Zavisova Adriana Sprincova Peter Kopcansky |
| Affiliation: | a Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 040 01 Košice, Slovakia b Institute of Acoustics, Adam Mickiewicz University, Umultowska 85, 61-614 Poznań, Poland c Institute of Physics, Poznań University of Technology, Nieszawska 13A, 60-965 Poznań, Poland d Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany |
| Abstract: | A suspension of bacterial magnetosomes was investigated with respect to structural and magnetic properties and hyperthermic measurements. The mean particle diameter of about 35 nm was confirmed by transmission electron microscopy (TEM), X-ray and magnetic analysis. The X-ray powder diffraction peaks of magnetosomes fit very well with standard Fe3O4 reflections. The found value for specific absorption rate (SAR) of 171 W/g at 5 kA/m and 750 kHz means that magnetosomes may be considered as good materials for the biomedical applications in hyperthermia treatments. Moreover, they have biocompatible phospholipid membrane. |
| Keywords: | Magnetospirillum sp. strain AMB-1 Biomineralization Biological nanoparticle Magnetosome Magnetic characterization Hyperthermia SQUID magnetometer X-ray diffraction |
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