Fluxgate based detection of magnetic nanoparticle dynamics in a rotating magnetic field
作者： Jan Dieckhoff , Meinhard Schilling , Frank Ludwig
DOI: 10.1063/1.3639276
关键词: Demagnetizing field 、 Magnetometer 、 Physics 、 Field (physics) 、 Magnetic nanoparticles 、 Fluxgate compass 、 Magnetohydrodynamics 、 Rotating magnetic field 、 Condensed matter physics 、 Magnetization
摘要: We have developed a measurement setup allowing the investigation of dynamics magnetic nanoparticle suspensions in rotating field. To determine vector sample magnetization, sensitive fluxgate magnetometers are utilized detecting sample’s stray The phase lag between magnetization and field is determined via cross correlation spectrum. spectra measured for various amplitudes on aqueous magnetite show good agreement with theory if multidispersity core hydrodynamic size taken into account.
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