The effects of Mn2+ cation concentration on the ac magnetically induced heating characteristics and the magnetic properties of superparamagnetic MnxZn1-xFe2O4 nanoparticles (SPNPs) were investigated to explore the biotechnical feasibility as a hyperthermia agent. Among the MnxZn1-xFe2O4 SPNPs, the Mn0.5Zn0.5Fe2O4 SPNP showed the highest ac magnetically induced heating temperature (Delta T-ac,T-mag), the highest specific absorption rate (SAR), and the highest biocompatibility. The higher out of phase susceptibility (chi('')(m)) value and the higher chemical stability systematically controlled by the replacement of Zn2+ cations by the Mn2+ cations on the A-site (tetrahedral site) are the primary physical reason for the promising biotechnical properties of Mn0.5Zn0.5Fe2O4 SPNP. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3430043]
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Korea Inst Sci & Technol, Biomed Res Inst, Seoul 136791, South Korea
Korea Univ Sci & Technol UST, Dept Biomed Engn, Seoul 136791, South KoreaKorea Inst Sci & Technol, Biomed Res Inst, Seoul 136791, South Korea
Jeun, Minhong
Park, Sungwook
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Korea Inst Sci & Technol, Biomed Res Inst, Seoul 136791, South KoreaKorea Inst Sci & Technol, Biomed Res Inst, Seoul 136791, South Korea
Park, Sungwook
Jang, Gun Hyuk
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Korea Inst Sci & Technol, Biomed Res Inst, Seoul 136791, South Korea
Korea Univ Sci & Technol UST, Dept Biomed Engn, Seoul 136791, South KoreaKorea Inst Sci & Technol, Biomed Res Inst, Seoul 136791, South Korea
Jang, Gun Hyuk
Lee, Kwan Hyi
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Korea Inst Sci & Technol, Biomed Res Inst, Seoul 136791, South Korea
Korea Univ Sci & Technol UST, Dept Biomed Engn, Seoul 136791, South KoreaKorea Inst Sci & Technol, Biomed Res Inst, Seoul 136791, South Korea