Magnetoresistive sensors have been enthusiastically selected for applications requiring magnetic field detection with small footprint sensors. The optimisation of the sensor response includes using soft free layers, based on CoFeB and NiFe alloys. Here we report TMR noise performance magnetically saturated in-plane MTJ including CoFeBTa CoFeSiB films as layers (FL). Assessing magneto-crystallin...

Nonmagnetostrictive CoFeSiB alloy wires were subjected to cold drawing processing followed by annealing under tension, in order to induce the formation of circular magnetic anisotropy. The axial (M Z – HZ) and circular (M f – Hf) hysteresis loops indicate the existence of induced transverse anisotropy, with the magnitude of the anisotropy field being dependent on the processing conditions, whil...

Abstract We developed tunnel magneto-resistive (TMR) sensors based on magnetic junctions (MTJs) that are able to detect a weak, sub-pT, field at low frequency. Small detectivities of 0.94 pT/Hz 1/2 1 Hz and 0.05 kHz were achieved by lowering the resistance MTJs enhancement signal using thick CoFeSiB layer flux concentrators. demonstrated real-time measurement magnetocardiography (MCG) nuclear r...