Amorphous and nanocrystalline Fe–Ni–Zr–B ribbons as sensing elements in magnetic field sensors

Fe81−xNixZr7B12 (x=20x=20, 30, 40) melt-spun alloys were investigated as potential new material applied as a sensing element of a fluxgate-type high-sensitivity magnetic field sensor. The sensitivity of the magnetometer was increased by about 60% by using the amorphous or nanocrystalline Fe41Ni40Zr7B12 alloy, compared with a standard reference sensing material. Application of this material can also extend the temperature range of the operation of the device.