Abstract
Variation of non-linear impedance as a function of circumferential temperature is reported. Non-linear impedance occurs in rectangular strips of thin-film soft magnetic material with a width of tens of microns and with inclined stripe domains. Sensors with different dimensions were studied with circumferential temperatures ranging from −20°C to 70°C. It was found that the change in the non-linear impedance profile had the same tendency, irrespective of the impedance profile. As the circumferential temperature increases the width of magnetic field between the non-linear impedances, these happen in case of increasing or decreasing the magnetic field, narrows. A method of compensating for the temperature drift of the magnetic field in which non-linear impedance appears is proposed. It is shown that this method compensates well for the temperature drift within the range of measurement error.
