TY - GEN
T1 - Nonlinear behavior of magnetic fluid in brownian relaxation
T2 - 2nd International Workshop on Magnetic Particle Imaging, IWMPI 2012
AU - Yoshida, Takashi
AU - Enpuku, Keiji
PY - 2012/1/1
Y1 - 2012/1/1
N2 - Nonlinear Brownian relaxation of magnetic fluids for the case of large excitation field was studied in relation to its biomedical applications. The Fokker-Planck equation, which describes the nonlinear behavior of magnetic fluids, was solved by numerical simulation when ac field was applied. Frequency-dependences of the harmonics were investigated in terms of the effective Brownian relaxation time τeff, which was empirically obtained from the ac susceptibility of the fundamental component. It was shown that higher harmonics become small even at ωτeff=1 compared to each quasi-static harmonics amplitudes.
AB - Nonlinear Brownian relaxation of magnetic fluids for the case of large excitation field was studied in relation to its biomedical applications. The Fokker-Planck equation, which describes the nonlinear behavior of magnetic fluids, was solved by numerical simulation when ac field was applied. Frequency-dependences of the harmonics were investigated in terms of the effective Brownian relaxation time τeff, which was empirically obtained from the ac susceptibility of the fundamental component. It was shown that higher harmonics become small even at ωτeff=1 compared to each quasi-static harmonics amplitudes.
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U2 - 10.1007/978-3-642-24133-8_2
DO - 10.1007/978-3-642-24133-8_2
M3 - Conference contribution
AN - SCOPUS:84930622324
SN - 9783642241321
T3 - Springer Proceedings in Physics
SP - 9
EP - 13
BT - Magnetic Particle Imaging - A Novel SPIO Nanoparticle Imaging Technique
A2 - Borgert, Jorn
A2 - Buzug, Thorsten M.
PB - Springer Science and Business Media, LLC
Y2 - 15 March 2012 through 16 March 2012
ER -