Institute of Medical Biology and Genetics

Bratislava, Slovakia

Institute of Medical Biology and Genetics

Bratislava, Slovakia
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Hashim A.,Slovak Academy of Sciences | Molcan M.,Slovak Academy of Sciences | Kovac J.,Slovak Academy of Sciences | Varchulova Z.,Institute of Medical Biology and Genetics | And 6 more authors.
Acta Physica Polonica A | Year: 2012

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.

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