A temperature measurement method based on time parameters associated to CoFeSiB microwire magneto-thermal behavior

In this paper, we present a novel method for temperature measurement based on the analysis of the characteristic time parameters associated with the magneto-thermal behavior of a CoFeSiB microwire. Firstly, we developed a method that utilizes time measurements, nowadays performed with high precision and resolution, for evaluating the temperature of the sensing element. Therefore, we developed a conceptional sensor prototype for studying the operational capability of such a strategy. We conduct an experimental campaign to investigate the temperature effect on the magnetization of the CoFeSiB sample in the range between −70 and 70 °C, which is relevant for many industrial applications. Our proof-of-concept device demonstrates a sensitivity ranging from 30 to 190 μs /ºC, and showcases the potential of time domain analysis for temperature measurement. Moreover, the developed device is small and lightweight, thus being attractive for applications in which payload and size are a significant concern.