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Title: Dependence of frequency and magnetic field on self-heating characteristics of NiFe2O4 nanoparticles for hyperthermia
Authors: Bae, S. 
Lee, S.W. 
Takemura, Y.
Yamashita, E.
Kunisaki, J.
Zurn, S.
Kim, C.S.
Keywords: Frequency dependence
Magnetic field dependence
NiFe 2O4 nanoparticle
Temperature-rising characteristics
Issue Date: Oct-2006
Citation: Bae, S., Lee, S.W., Takemura, Y., Yamashita, E., Kunisaki, J., Zurn, S., Kim, C.S. (2006-10). Dependence of frequency and magnetic field on self-heating characteristics of NiFe2O4 nanoparticles for hyperthermia. IEEE Transactions on Magnetics 42 (10) : 3566-3568. ScholarBank@NUS Repository.
Abstract: Self-heating temperature-rising characteristics of nano-size controlled NiFe2O4 particles were analyzed as a function of applied frequency and magnetic field in order to investigate the physical principle of self-heating and to confirm the possibility for a real in vivo hyperthermia application. According to the magnetic properties of 35-nm size NiFe 2O4 nanoparticles, it was confirmed that the physical mechanism of self-heating is mainly attributed to the hysteresis loss. In addition, it was found that the self-heating temperature was linearly increased by increasing frequency and was proportionally square to the applied magnetic field. The self-heating temperature was rapidly increased in an initial stage and then it reached to the maximum. The maximum self-heating temperature was controlled from 2.8© to 72.6°C by changing the applied frequency and magnetic field. The corresponding product of the frequency and the strength of magnetic field H0 f was between 1.9 × 108 Am -1s-1 and 13.4 × 108 Am -1s-1. These values are in the biological safety and tolerable range for hyperthermia considering deleterious physiological response of human body during hyperthermia treatment. © 2006 IEEE.
Source Title: IEEE Transactions on Magnetics
ISSN: 00189464
DOI: 10.1109/TMAG.2006.879617
Appears in Collections:Staff Publications

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