TY - JOUR
T1 - Debye-Based Frequency-Domain Magnetization Model for Magnetic Nanoparticles in Magnetic Particle Spectroscopy
AU - Wawrzik, Thilo
AU - Yoshida, Takashi
AU - Schilling, Meinhard
AU - Ludwig, Frank
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - Signal generation in magnetic particle imaging and magnetic particle spectroscopy is generally described via the Langevin function of superparamagnetism. To include the magnetization dynamics, the Langevin function is augmented with a frequency-dependent term derived from the linear Debye model. Here, we extend that expression to cover the dynamics of higher harmonics, where each harmonic is multiplied with a complex-valued weighting factor, obtaining a frequency-domain model for application in the context of viscosity-/binding-dependent magnetic particle spectroscopy measurements.
AB - Signal generation in magnetic particle imaging and magnetic particle spectroscopy is generally described via the Langevin function of superparamagnetism. To include the magnetization dynamics, the Langevin function is augmented with a frequency-dependent term derived from the linear Debye model. Here, we extend that expression to cover the dynamics of higher harmonics, where each harmonic is multiplied with a complex-valued weighting factor, obtaining a frequency-domain model for application in the context of viscosity-/binding-dependent magnetic particle spectroscopy measurements.
UR - http://www.scopus.com/inward/record.url?scp=84930640516&partnerID=8YFLogxK
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U2 - 10.1109/TMAG.2014.2332371
DO - 10.1109/TMAG.2014.2332371
M3 - Article
AN - SCOPUS:84930640516
SN - 0018-9464
VL - 51
SP - 5300404
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 2
ER -