A comparison of the temperature effects on the diagonal and off-diagonal responses of the GMI sensors

International audienceThe impact of the influence quantitiessensors has become a hot topic of interest in the last years [versus the temperature changes in a real measurement environmentmanufacturers and industrial buyersrich amorphous wires(Co-Fecomponent, Z21, of the impedance tensorintrinsic sensitivity and offsetimplementation.The sample was awire was supplied by an AC current of 1 MHz frequency and 5 mA amplitude.about 800 turns was also wound around the wirecase, a DC current of 10 mAwires with circumferential anisotropy) was also supplied to the wireinside a regulated thermal chamber. Experiments were conducted in the temperatures range of[-20 °C, 120 °C].The impedance For the componentZ11, the results have showed afield, of -0.13 (A/m)/°C (170 nT/°C)between -20 °C and +40 °C, and then itdecreaseddiagonal component, Z21, the change of the offset near the zero(A/m)/°C or-19 nT/°C), while tthe range of [-20 °C, 120 °C]