The Influence of Morphology on Magnetic Properties of Magnetosomes

• Authors: A. Hashim , M. Molčan , J. Kovač , Z. Varchulová , H. Gojzewski , M. Makowski , P. Kopčansky , Z. Tomori , M. Timko
• Languages of publication: EN

Abstracts

EN

Cultivation process was changed three times. The culture medium was enriched by more amount ferric quinate (FQ magnetosomes sample) and more amounts Wolfe's vitamin solution (WVS magnetosomes sample) comparing to normal culture medium (NP magnetosomes sample). NP sample of magnetosomes shows zero coercivity and behaves superparamagnetically. The increase of coercivity (6.5 Oe for WVS and 20 Oe for FQ) may be caused by higher value of shape anisotropy and reveals stronger magnetic correlations between particles of magnetite chains.

Keywords

EN

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

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

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1250-1252

Dates

published

2012-05

Contributors

author

A. Hashim

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

author

M. Molčan

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

author

J. Kovač

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

author

Z. Varchulová

• Institute of Medical Biology and Genetics, Faculty of Medicine UK, Sasinkova 4, 811 08 Bratislava, Slovakia

author

H. Gojzewski

• Institute of Physics, Poznań University of Technology, Nieszawska 13A, 60-965 Poznań, Poland

author

M. Makowski

• 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

P. Kopčansky

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

author

Z. Tomori

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

author

M. Timko

• Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Kosice, Slovakia

References

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Identifiers

DOI

10.12693/APhysPolA.121.1250