CoZn-ferrite nanoparticles for magnetic fluid hyperthermia

0398762 - FZÚ 2014 GR eng A - Abstrakt
Závěta, Karel - Veverka, Miroslav - Kaman, Ondřej - Pollert, Emil - Burian, M. - Kašpar, P.
CoZn-ferrite nanoparticles for magnetic fluid hyperthermia.
Book of Abstracts of The Joint European Symposia on Magnetism (JEMS 2013). Rhodes, Greece: TRIAENA TOURS, 2013. s. 502.
[Joint European Symposia on Magnetism (JEMS 2013). 25.08.2013-30.08.2013, Rhodes, Greece]
Grant CEP: GA ČR GAP204/10/0035
Institucionální podpora: RVO:68378271
Klíčová slova: CoZn-ferite * magnetic hyperthermia * AC hysteresis * calorimetry
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

Unintentional overheating of the healthy tissue may be prevented by choosing an appropriate magnetic material, whose heating efficiency decreases with increasing temperature and a self-controlled temperature regime is reached. Nanoparticles of CoZn-ferrite may serve this purpose as their size, composition and ion distribution control their transition to the superparamagnetic or paramagnetic state. The magnetic cores of Co0.4Zn0.6Fe2O4+γ with two different sizes were prepared by the coprecipitation method followed by annealing and mechanical treatment. The subsequent silica encapsulation of the samples led to colloidally stable non-toxic water suspensions. The magnetic losses were determined from AC hysteresis loops and compared with the calorimetric measurements of the particle suspensions.
Trvalý link: http://hdl.handle.net/11104/0226171