期刊
IEEE TRANSACTIONS ON MAGNETICS
卷 49, 期 1, 页码 250-254出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2012.2224098
关键词
Biomineralization; magnetic fluids; magnetotactic bacteria Magnetospirillum sp.AMB-1; morphology; specific absorption rate; Verwey transition
资金
- Slovak Academy of Sciences [VEGA 0077, 0043]
- APVV [0171-10]
- Ministry of Education Agency of EU [26220120021, 26220120033, 26220220005]
- Polish Ministry of Science and Higher Education [650/MOB/2011/0]
- Polish National Science Centre [DEC-2011/03/B/ST7/00194]
- [DS 62-186/12 DS-MK-4]
The magnetic properties and hyperthermia effect were studied in solution of magnetosomes obtained by changing conditions during biomineralization of magnetotactic bacteria Magnetospirillum sp.AMB-1. It was shown that adding a higher amount of Wolfe's vitamin solution (WVS) or ferric quinate (FQ) cause increase of the mean diameter from 47 nm (normal condition) up to 52 nm and 58 nm respectively. As a consequence of this change the preparation conditions coercivity and Specific Absorption Rate (SAR) increased up to 20 Oe and 949 W/g(Fe) for sample FQ, respectively. On the other hand the process of cultivation at the changed conditions markedly reduced the cultivation time. Also the isolated chains of magnetosome were shorter containing less amount of magnetosomes too.
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