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Orientation Mediated Enhancement on Magnetic Hyperthermia of Fe 3 O 4 Nanodisc
Author(s) -
Yang Yong,
Liu Xiaoli,
Lv Yunbo,
Herng Tun Seng,
Xu Xianhui,
Xia Weixing,
Zhang Taishi,
Fang Jie,
Xiao Wen,
Ding Jun
Publication year - 2015
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201402764
Subject(s) - nanodisc , materials science , magnetic hyperthermia , isotropy , magnetic nanoparticles , nuclear magnetic resonance , hyperthermia , orientation (vector space) , nanoparticle , condensed matter physics , nanotechnology , physics , optics , chemistry , biochemistry , geometry , lipid bilayer , mathematics , membrane , meteorology
A two‐step chemical approach to synthesize high quality Fe 3 O 4 nanodisc is reported. The magnetic hyperthermia properties of the nanodisc and isotropic nanoparticles are investigated systematically. The results suggest that the nanodisc shows much higher specific absorption rate (SAR) than isotropic nanoparticles. This is attributed to the parallel alignment of nanodisc with respect to the alternating current magnetic field, which is confirmed by good agreement between experimental results and micromagnetic simulation. It is found that such parallel alignment could enhance the SAR value by a factor of ≈2 with respect to the randomly oriented case. The above results indicate that the nanodisc provides an excellent thermal seed for magnetic hyperthermia. This study sheds the light on the magnetic hyperthermia mechanism of magnetic nanodisc and it also opens the window to explore high efficiency thermal seeds by controlling the orientation of magnetic nanostructures.