Magnetic Properties of Bacterial Nanoparticles

• Authors: M. Timko , A. Džarová , J. Kováč , P. Kopčanský , H. Gojzewski , A. Szlaferek
• Languages of publication: EN

Abstracts

EN

The objective of this study is to prepare and study magnetic properties of biological magnetic nanoparticles (magnetosomes) as a product of biomineralization process of magnetotactic bacteria Magnetospirillum sp. AMB-1. From temperature dependence of remanent magnetization and coercive field the Verwey transition is clearly seen at 105 K as a consequence of the large anisotropy along the chains of magnetosomes.

Keywords

EN

47.65.Cb; 51.60.+a; 75.30.Gw; 75.50.Tt; 75.60.Nt; 75.60.Ej; 75.75.+a

Discipline

• 75.30.Gw: Magnetic anisotropy
• 47.65.Cb: Magnetic fluids and ferrofluids
• 75.50.Tt: Fine-particle systems; nanocrystalline materials
• 75.60.Nt: Magnetic annealing and temperature-hysteresis effects
• 75.60.Ej: Magnetization curves, hysteresis, Barkhausen and related effects(for hysteresis in ferroelectricity, see 77.80.Dj)
• 51.60.+a: Magnetic properties

• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 1
• Pages: 381-383

Dates

published

2009-01

Contributors

author

M. Timko

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia

author

A. Džarová

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia

author

J. Kováč

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia

author

P. Kopčanský

• Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 04001 Košice, Slovakia

author

H. Gojzewski

• Institute of Physics, Poznań University of Technology, Nieszawska 13A, 60-965 Poznań, Poland
• Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

author

A. Szlaferek

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

References

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• 7. M. Timko, A. Džarová, P. Kopčanský, V. Závišová, M. Koneracká, A. Šprincová, M. Vaclavíková, L. Ivaničová, I. Vávra, Acta Phys. Pol. A 113, 573 (2008)
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Identifiers

DOI

10.12693/APhysPolA.115.381