High Resolution Current Imaging by Direct Magnetic Field Sensing
S.I. Woods, Nesco M. Lettsome, et al.
ISTFA 2003
A model is presented describing the dynamic response of a single-domain fluxgate magnetometer over a wide range of operating conditions in terms of a single measurement of a hysteresis loop or the permeability of the fluxgate's ferromagnetic core. The model is based on the Landau-Lifshitz-Gilbert equation, which describes the dynamics of a coherently rotating ferromagnet. Measurements of the response of a permalloy thin-film fluxgate and a molybdenum-permalloy tube fluxgate demonstrate the accuracy and limitations of the model. © 2000 IEEE.
S.I. Woods, Nesco M. Lettsome, et al.
ISTFA 2003
V. Foglietti, W.J. Gallagher, et al.
IEEE Transactions on Magnetics
W. Eidelloth, W.J. Gallagher, et al.
Applied Physics Letters
J.R. Kirtley, R.M. Feenstra, et al.
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films