Capacitive sensor of weak magnetic field on the basis of feromagnetic fluid with micro- and nanoscale particles

In article the possibility of use of magnetic fluid as a sensitive element of the magnetic field sensor is considered. The importance of current tasks deals with the search of the perspective magnetic substances susceptible to weak magnetic field. The results of a research of the capacitive sensor of magnetic field with ferromagnetic fluid are presented. Formation of chained structures from magnetic particles in ferrofluid by the influence of the magnetic field leads to change of magnetic properties of ferrofluid. The sensor is based on the change of the capacitance with an active dielectric (ferrofluid) on the magnitude of magnetic field.